It’s important to note that because this is an electric bike, not all trails are legally accessible. You’ll need to check with the federal, state, or local land management agency in charge of the trails you want to ride to see if it’s possible. You may also face some resistance from holier-than-though cyclist types. Those guys are best avoided anyway, and the glowing LEDs on the down tube should at least help you identify them quicker. 
That’s a tough one to answer. It depends on the power of the battery (typically 24, 36 or 48V), the power of the bike (limited in the UK to 250W), the bike’s battery management system, and the way you ride. Some bikes allow you to choose different levels of assist to prioritise speed or battery life, which makes predictions of battery life even more difficult.
Thanks for your excellent article. I’ve been riding ebike for about 16 years. My first electric bike was a Meridian pedal assist bike. I just up graded to a new bike. I’m 73, so I wanted a pedal assist bike that had a throttle. I researched for several months and bought what I think is the best bike for the money. It’s a Rad Rover 2017 fat bike. It has a 750 watt mother with a 48 volt 11.6 amp battery. It’s a fantastic bike, that is a lot of fun to ride. You might want to check it out and add it to your list of bikes. Rad Rover also make a city commuter bike, a cargo bike and a folding bike. You can’t beat their price for a quality bike. Thanks again for both of your articles. They were very informative.

Can Electric Scooters Be Used On Pavements


Bosch’s flagship mountain bike system uses a mini drive ring with internal gearing to send its power to the drivetrain. There’s some resistance in the system over 25km/h, but when you first press down on the pedals there’s an impressive surge of power, and it offers good support over a wide cadence range. Its size has an impact on the width of the cranks (the Q-factor) as well as the chainstay length of the frame, and it’s not the lightest system on the market at 4kg for the motor. On the other hand, Bosch is the most established player on the market, and its system has proven itself over many years.

Additionally, it features the Shimano 7-speed shifting system, making it easier to attain a higher speed. It is a reliable bike with two working modes. With this, you can pedal it whenever it runs out of power. The powerful e-bike is able to move at a speed of 32km/h and can move for 22-28 miles on a single charge. The padded and comfortable saddle is easily adjustable for your riding height. You can also adjust the handlebars for a more comfy ride.

Which Motor Is Used In Electric Bike


The distance range of an electric mountain bike refers to the distance you can travel on a single battery charge given a specific set of circumstances. All of the e-bikes we tested have roughly the same battery storage capacity, except for the Bulls E-Stream, but external variables like rider weight, pedaling input, terrain, trail conditions, and weather conditions may all affect the length of time or distance that a battery charge will last. To compare the distance range of the models in our test we had the same tester take each of the bikes out in their highest support setting and do laps on a very steep paved hill until the batteries ran down from fully charged to completely dead. When we finished, we recorded the distance and vertical gain that each model was able to complete and easily, and objectively determined our winner.

How Much Does An Electric Bike Weigh


As a serious,but aging cyclist, have been considering the purchase of an electric assist bike for some years. My primary concern was that the bike needed to provide enough power to assist me to tackle some very steep hills and my weight is near 220 lbs. Having no experience with electric assist, I anticipated the 500 watt motor rating of this ... full review

Are E Bikes Allowed In Moab


Using that same meticulousness, he built a mountain bike out of titanium in 1995, and it is the lightest in the world. It weighs only 5.855 kg (12.9 lbs), and it became his second “Guinness Book” entry. His latest entry into the record-books came in 1998: only 9.74 kg (21.4 lbs) for the lightest electric bike, of course using his custom titanium frame. The power was from an electric friction-drive similar to the Solex moped, powering the rear tire, but…that drive system would prove to be unacceptable for an off-road mountain bike.
Not the best bike but good for what it is. 250watt. not enough power even for small hills on its own and does not do 15/hr even on flat ground. battery looses power when cold but still works. Over all so far, dispite the above I give it 4 stars because it is what you would excpect in a cheap bike and it does work. There is no braket for the headlight tho so be warned you will have to improvise on that. 

Do Electric Bikes Need A Licence


XB-300-SLA X-Treme Electric Mountain Bicycle is a great bike for the novice as it is easy to ride with simple steps. It is an affordable bike with high-quality features that work on a motor of 300 watts and offers a speed up to 20 MP on a single charge. It takes up to 4 hours to fully recharge the battery for the next use. The comfortable padded seat, 18-inch steel frame, 7-speed tourney gear, 24V lead acid battery, power assist system, and steel front forks are a few features that make it popular.

What Is The Difference Between Bike And Bicycle


A quality battery pack made from authentic name-brand 18650-format cells should last for over 1000 charge and dis-charge cycles. If you drain your battery pack once a week, then your pack should last over 3 years. However, you might be able to more than double the battery packs life by charging it at a lower (slower) charge rate (3A instead of the faster 5A or 7A), and also if you only charge the pack to 80% of its maximum voltage.

The bike has three speed modes: low, medium and high. The top speed is about 18 miles with motor only and 25 mph with pedaling. The range you can get out of the motor is about 30 miles, but since you can pedal it just like the traditional bike after the battery dies, there is really no limit to how far you can go.  21-speed gear shift system allows you to be in full control of your ride, and front and rear disc brakes protect your safety. The Ancheer electric mountain bike is also equipped with LED headlight and horn.

How Far Can You Go On A Electric Bike


Nakto City Electric Bike is designed for urban commuting, it is fast, comfortable and convenient. This is a perfect utility bike; you can use it to run errands, go to the grocery store, go to work, or just a leisure ride. It is equipped with all the features you would want for riding around town, such as LED headlight, a rear cargo rack, a cargo basket and a kickstand.

Can You Still Get Fit On An Electric Bike


The F1-trained engineers at William Advanced Engineering assisted with the electrical parts and the result is a 250W motor that provides pedal assistance via the front hub – which is still a very unusual approach. It draws power from a 300Wh battery pack that sits in a bag and goes on the front where the Brompton luggage rack would normally sit. You can also opt for a larger bag that holds both the battery and your spare suit or laptop or whatever.  

The Ghost SL AMR scored relatively well in this metric, with a small digital display mounted by the stem. Both the Rocky Mountain Instinct Powerplay and the Giant Trance E+ 2 Pro fell short of the bar set by the competition with their all-in-one shifter/display units. The Giant outperforms the Rocky Mountain here, but both attempts at LED displays integrated into the control unit are more challenging to read than digital displays.

Can You Ride A Motorized Bicycle With A Suspended License


Built into the bell cap are tiny LEDs that warn him about his level of energy consumption, and also how much battery power remains. The former marathon runner states “My aim has always been to use this bike 100% for off-road only” since E-bikes are legally restricted to a mere 250-watts maximum in most of the European Union countries that he enjoys visiting.
Testers found the Rocky Mountain Instinct Powerplay to perform relatively well on the climbs. The steep seat tube made for a comfortable climbing position and the powerful pedal assist drive unit felt dialed. Its traction could be improved with beefier tires, and the weight of the bike feels a little higher than the competition resulting in some awkward handling at lower speeds. The Giant Trance E+ is also a competent climber, with ground-hugging Maestro suspension, comfortable geometry, and plenty of power on tap when you need it. Our least favorite bike on the climbs was the Ghost Hybride SL AMR. The Ghost has solid geometry numbers, but the pedal assistance felt less powerful and was definitely less consistent than the competition.

What Is The Best Hitch Mount Bike Rack


On the AM 4 you get 150mm of travel via a Fox Factory 36 Float fork, 11-speeds from a Shimano Deore XT drivetrain, and Magura MT-Trail hydraulic disc brakes. They also don’t gip you on the dropper with a wonderful, wonderful KS Lev. In terms of geometry, the build is pretty dope. It’s a nice slack feel, so you can do some solid downhills. A DT Swiss wheelset along with Magic Mary tires give you a lightweight and smooth ride.
Bottom Line The Specialized Turbo Levo Comp returns to our e-bike test with a well rounded performance that earns it our Editor's Choice Award, again. The Bulls E-Stream Evo AM 4 is a brawler on the descents with an impressive distance range thanks to its large battery storage capacity. The Giant Trance E+ 2 Pro is well rounded and reasonably priced earning it our Best Buy Award. The Instinct Powerplay Alloy 50 is close to greatness but is held back by its controls and components. The Ghost Hybride SL AMR S1.7+ looks interesting on paper but doesn't come together well on the trail.

Do Halfords Fit Roof Racks


Yes, a new fold-up has usurped the electric Brompton. Although we have just taken delivery of the Brompton for a proper, long-term test, so maybe this situation will change again… However, for now the Gocycle GX is our top recommendation for anyone who wants an e-bike. That's because the Gocycle is more fun to ride and feels more sturdy. The flip side of that is that it doesn't fold up anywhere near a neatly as the Brompton but, crucially, it folds up enough, and sufficiently quickly, to legally take it on public transport. Although people may tut at you.

Do E Bikes Require Insurance


Achesin electric mountain bike is designed with an ergonomic design that makes it very stable and easy to ride. Like most of the mountain bikes, this one is built with a good double-layered aluminum alloy wheel which makes it easy to maneuver, lightweight and durable. With its powerful motor and battery system, you can easily cover between 25 to 50 kilometers depending on the nature of the terrain.
Surprised by the 3 year votes -- I am hoping for more years than that! My friend has his old bike with a BionX kit that he uses every day that's 7 years old without any problem. I expect to change the battery after a few years but that's it -- my thinking is that I will get tired of the bike (wanting new tech) before the bike gets tired of me! Buy a good product and you should be fine for years to come.
Not many manufacturers are concerned with building lightweight ebikes because of the necessary compromises (high cost and low performance). For most manufacturers its easier to exaggerate how light an electric bike is (one common trick is specify weight without ebike battery). For example the ridiculous $88k Blacktrail Bt-01 claims to be 40 pounds (yeah right!). What we learn from this list is to build a lightweight electric bike usually takes a thin road bike, a skimpy battery pack, and  a puny motor. The only thing big about these bikes is their price-tag, because they use lightweight (and expensive)  components. As it turns out it is very easy to build a lightweight bike yourself if you are willing to spend the money, and if you use a small geared hub motor. Look to the home builds on this list for inspiration if you want to build one yourself. Most of these bikes have the capacity to carry larger battery packs if the owner so chooses. They are shown here in their most lightweight configurations. 3 of these bikes are Australian (Super Commuter, Commuter Booster, Solar Fixie) 8 are road bikes 2 are mountain bikes 3 are made of carbon (the Montanara Volta, the Super Commuter, and the BH eMotion) 4 are home builds. Someday we hope to make a top 10 list entirely of production electric bikes. But at the moment there are not 10 lightweight production ebikes on the market worthy of this list. 3 of these bikes are mid-drives (through the gears). Mid-drives allow a bike to use much smaller (and lighter) motors and still be capable of decent hill climbing. BH eMotion, Vivax, and Montonara Volta 2 were purpose built to be ebikes (Specialized Turbo, BH Motion Carbon), the others are conversion bikes. 1 of these bikes does not have gears (the Solar Fixie Bike) All of these bikes except for one (Cannondale) have LiPo packs.

Which Is The Best Bicycle For Beginners


Merax is a brand that has been dominating the biking industry for a while now, and this electric mountain bike compliments the brands quality and desire to be one of the best brands. It is powered by a 350 Watt motor which gives the bike enough power to go anywhere. The bike functions in two modes; as an E-bike and on a PAS mode. It also has a 5 pedal assistant level which is a good way to enjoy different riding experiences.

Can You Ride An Electric Bike In The Rain


The 13amh battery is nestled at the down tube frame on a battery bracket, which you can remove quickly if required. The battery is powerful enough to provide life juice to the bike for a long distance. The trip distance is 25 miles in full electric mode and 50 miles on the assist pedal. The battery comes with a 48V 2.0A charger and it survives more than 500 times of recharge cycles.

Is Electric Bike Good Exercise


You can take it to anywhere you like as the bike is perfect for exploring wild trails, discovering the nooks of city streets, and daily commute. The motor produces no noise, so there is no way to disrupt the tranquility of natural trails. The more than 4-inch wide fat tires will roll over even on snowy and sandy tracks. The width of the tires and the full-suspension design will cushion the paths for you and help to cruise through the climbs and bomb down the descents.

Can I Put 27.5 Wheels On A 26 Bike


Me: I had a total of seven knee surgeries over 14 months, and man, my fitness took a beating. Getting back on a bike was both liberating and frustrating. I just can’t go as fast, or as far, as I used to. But, you don’t have to fall victim to a flesh-eating bacterial infection during routine a ACL reconstruction to find the idea of an electric mountain bike appealing. 

What's The Difference Between Presta And Schrader Valves


X-Treme Scooters Folding Electric Mountain E-Bike offers a comfortable ride with front and rear suspension. It is an ideal bike for the college students, campers, and anyone who wants a portable and lightweight mode of transportation. This E-bike works on a motor of 300 watts. The best thing about this bike is it allows you to fold it after reaching the destination. It gives you a speed of about 20 mph with a 7-speed Shimano tourney gears. You can adjust the seat according to your ease.
With different degrees of assistance at your fingertips, riders of varying fitness levels are easily accommodated on the same ride too. Which, depending on who’s setting the pace, can bring a social aspect back to big days out, because you can all ride together and the assistance from the motor makes it that much easier to string a coherent sentence together even on the steepest climbs.
For Canyon’s first e-mtb the Spectal:ON 8.0 hasn’t simply hit the trail running, it’s power up it in Boost mode. The geometry, sizing and handling are all on point, and details like the adjustable geometry, odd wheel sizes, tyre specific rim widths and short cranks make Canyon a market leader rather than a brand that’s simply playing catch up. With a Fox 36 Fit4 fork the Spectral:ON 8.0 would probably have won the test, the more basic Grip damper never having the measure of Canyon’s superb rear suspension. 

How Can I Buy A Bike In Japan


Electric bikes (also known as e bikes) are perfect for long-distance riding, or when you just don’t feel like giving your full effort. What differentiates them from electric motorcycles is the ability for the rider to pedal the bike at any time, so if you’re riding along and your battery dies, you’re not going to stranded. These are often very valuable bikes, but some models can be more affordable than you might expect, especially when you treat them as a form of transportation as opposed to thinking of the price in terms of regular bicycles.
Nakto electric bike comes with two styles of frame, both for man and a step-though frame for women. Equipped with Shimano 6 speed derailleur, the 6-speed gear system allows you to reach up to a 25mph top speed. Nakto City E-Bike is affordable, but it’s got a lot of features that are found on more expensive models. You can switch between pedal assist and twist-and-go settings and engage the motor with just a flip of a switch when you need an extra push.

Is It Bad To Ride A Mountain Bike On The Road


With an electric mountain bike (or e-MTB) that gives you assistance up to 25kph, it’s possible to pack twice as much riding into the same amount of time. Those five great trails that you normally ride after work can now be ridden twice. That boring singletrack climb on your lunchtime loop suddenly becomes the highlight of your day. With the extra push from the motor it’s easy to double the distance covered, or do the same ride in half the time.
The 2019 Specialized Turbo Levo Comp returns to our electric mountain bike test and claims our Editor's Choice Award for the second year in a row. The new model has several notable changes over the previous version we tested including a new frame design, 29-inch wheels, 150mm of front and rear wheel travel, a new motor, and an updated battery charge and power output display. All these new changes have only helped to solidify the Turbo Levo Comp's position at the top of the podium. It still has the same well-rounded performance on the trail that makes it "feel the most like a mountain bike." It is more playful and agile than the competition, yet it still manages to charge the fall-line just as hard. Like previous Turbo Levo models, Specialized has very stealthily integrated the battery and motor into the frame giving it a low center of gravity and a very non-e-bike look. The new Specialized 2.1 motor is very quiet, plus it weighs less and has reduced the overall weight of the bike by more than 2 lbs.

Alright guys and gals, it’s 2018 and there are more choices for electric mountain bikes than ever before. Nearly every major brand has significantly expanded their lineups. This means that you’ll get better bikes at better price points. Still not sure if you should upgrade to an electric mountain bike? It’s the 21st century people! As the crew at Bulls says, “it’s not cheating, it’s just more fun.” The point of these bikes is not ruin other people’s fun by going at unsafe speeds, it’s to make your ride easier and your day last longer! Check out our top 10 electric mountain bikes for 2018 to see which bikes will get you out on the trails for thousands of miles.

Which Thule Bike Rack Is Best


Certainly very excited about this e-MTB. Bulls has decided to make use of the super powerful Shimano Steps E8000 motor. With a 500 wH battery and a 250 watt motor, this bike will assist you up incredibly steep hills but not burn too much of the battery. Bulls also sets this bike apart by setting it up with Shimano Di2 electronic shifting and a Deore XT drivetrain for precise and quick shifting. The other specs are about what you’d expect from a ride in this price range. Magura MT5 hydraulic disc brakes, RockShox suspension with 150mm of travel, and Rocket Ron tires on tubeless ready rims let you take on any mountain trails.
Key to Ebike success is that it rides like a bike first and foremost. You ride it like it was meant to be ridden, impressive. I started riding an ebike (Levo) about 6 months ago (although nowhere near your skill level) and have never ridden so much during the week, enjoyed every ride so much and looked so forward to rides as I currently do. Great Vids mate, keep it up!

What Is The Recommended Tire Pressure For 50 Psi Max


Ride1Ups Ghost Model is one of the top electric bikes for under $1000, and is a new take on the classic 1932 Roadster Bike. This electric bike is a simple and practical electric city bike that is perfect for carrying out your daily chores and trips around town. Compared to other models from Ride1Up this model was designed as a top quality budget electric bike with the design and quality of the bike on par with more expensive electric bikes. The bike features includes the rack and fenders, integrated LED taillight and headlight and it also has a 500W battery that allows the bike to reach a speed of 26MPH
Using that same meticulousness, he built a mountain bike out of titanium in 1995, and it is the lightest in the world. It weighs only 5.855 kg (12.9 lbs), and it became his second “Guinness Book” entry. His latest entry into the record-books came in 1998: only 9.74 kg (21.4 lbs) for the lightest electric bike, of course using his custom titanium frame. The power was from an electric friction-drive similar to the Solex moped, powering the rear tire, but…that drive system would prove to be unacceptable for an off-road mountain bike.

The unit system is likely to have several options to choose various levels of pedal assistance, which is between 25% and 100% of the pedaling input of the rider. The drive system is most likely to have a smartphone app with features to control various settings including setting up the engine’s support settings, modifying the controls according to the rider’s preference, monitoring the health and charge status of the battery, and more functions.

Are Electric Bikes Speed Limited


The 2019 Specialized Turbo Levo Comp returns to our electric mountain bike test and claims our Editor's Choice Award for the second year in a row. The new model has several notable changes over the previous version we tested including a new frame design, 29-inch wheels, 150mm of front and rear wheel travel, a new motor, and an updated battery charge and power output display. All these new changes have only helped to solidify the Turbo Levo Comp's position at the top of the podium. It still has the same well-rounded performance on the trail that makes it "feel the most like a mountain bike." It is more playful and agile than the competition, yet it still manages to charge the fall-line just as hard. Like previous Turbo Levo models, Specialized has very stealthily integrated the battery and motor into the frame giving it a low center of gravity and a very non-e-bike look. The new Specialized 2.1 motor is very quiet, plus it weighs less and has reduced the overall weight of the bike by more than 2 lbs.

How Do I Attach My Blackburn Pump To My Bike


The bike looks a no different than a regular mountain bike. The 36 V, 8Ah Li-Ion battery is very cleverly designed and disguised as a thermos, so you will not be able to tell whether this is an e-bicycle or a regular one unless you get really close. It is very nicely build, and pretty sturdy; the frame is 100% alloy and the front fork is made with high-grade carbon steel. The bike itself weighs about 45 lbs.
With most ebikes the choice of motor defines aspects of the frame geometry and to a lesser degree the suspension characteristics of the bike. Not with new Rock Mountain Altitude Powerplay. With its bespoke motor Rocky has been able to design an ebike that reflects the ride quality of a highly evolved 150mm trail bike. With instant power pickup, extended battery life and streamline proportions it’s not just the handling of the Rocky that will get you charged up for riding. It’s the best bike in this test by some margin, but we had an issue with the motor momentarily cutting and raising questions over it’s reliability.
Our testers were a little underwhelmed by a couple of our competitors. The Rocky Mountain Instinct Powerplay Alloy 50 has loads of potential with excellent geometry and trail smoothing rear suspension, but the spec of a wimpy fork and non-aggressive tires detract from its downhill confidence when the going gets steep or rough. The Trek Powerfly 7 FS was our least favorite e-bike to ride downhill, with an even less impressive component specification that held it back and didn't inspire confidence on descents.

What Is The Price Of Tvs Electric Bike


The 250W e-bike is very powerful and able to deliver a speed of 25 km/h. With this, you will find it great for riding long distances. Other than this, it also has an 8Ah battery, which guarantees a longer runtime. It features a powerful headlight that makes the bike great for night riding. Lastly, the ergonomic bike is very safe due to the efficient braking system.

Do Wider Tires Ride Smoother


With most ebikes the choice of motor defines aspects of the frame geometry and to a lesser degree the suspension characteristics of the bike. Not with new Rock Mountain Altitude Powerplay. With its bespoke motor Rocky has been able to design an ebike that reflects the ride quality of a highly evolved 150mm trail bike. With instant power pickup, extended battery life and streamline proportions it’s not just the handling of the Rocky that will get you charged up for riding. It’s the best bike in this test by some margin, but we had an issue with the motor momentarily cutting and raising questions over it’s reliability.

Should I Get A Fat Tire Bike


The XF800 comes with a high-powered motor (1000W and 48V) that works on three levels – Twisting Throttle to get the electric power at the full force, Pedal Assist, and completely Turn Off the power. The 7-speed Shimano shifter is great for experimenting at various speeds while the dual-suspension, wider tires, and hydraulic disc brakes ensure a bump-free smooth ride.
That aside, the Axis is a fantastic e-bike. At 'only' 16kg, it's almost lively by e-bike standards, but it also feels rock solid. It's geared too low in my opinion – I think it's fair to say I am not the target market – but in 8th, you can breeze on past the legally mandated, electrically-assisted 15.5mph. The hydraulic disk brakes will then bring you to a pleasingly rapid dead stop. The range and charging time are good, too. Cheap it is not, mind you.

How Long Do Electric Bikes Last


With 170mm travel, aggressive angles and Shimano’s superbly calibrated STEPS motor, the Focus Sam2 is an enduro bike with a built-in shuttle. With the bolt on TEC pack you really can climb to new heights, but without it the smaller capacity internal battery means you need to be ultra economical with your energy use. It’s also frustrating that the internal battery can’t be removed easily for charging. By far the biggest frustration with the Jam2 though is that the sizing isn’t very generous and standover clearance is limited. It’s still a great e-bike, but when you’re spending this much money, you can afford to be fussy.

How Much Weight Can An E Bike Carry


If you want an e-bike that positively sprays tech out you, try the Volt Axis on for size. It takes the GoCycle GS's combo of folding, lightweight frame and disk brakes and adds automatic gears, if you please. These react to your speed and pedalling effort. So you automatically gear down when you stop at traffic lights – although what self-respecting cyclist does that? – and then back up as you accelerate.

This lithium-ion battery bike has a range of nearly 30 miles per charge. As an added bonus, it also operates on three distinct models. You can take it off-road without worrying about damaging the frame on rougher surfaces thanks to its durable mountain bike frame. Features include a 17-inch mountain bike frame that fits most riders between 5’2 and 6’2, and a height-adjustable seat. 

Do You Have To Wear A Helmet On A Electric Bike


The major reason I want a lightweight e-bike is so that I can largely ride it as a regular bike and only occasionally use the assist and so that I won’t notice quite so much when the battery runs out of juice going up a hill. Other reasons I want a lightweight e-bike: so that I can easily lift it onto the bus bike rack; so that I can hang the front tire on the bike hooks in our light rail trains; so that I can put it on a car rack; so that I can occasionally carry it up stairs.

Can Electric Scooters Go Up Hills


With different degrees of assistance at your fingertips, riders of varying fitness levels are easily accommodated on the same ride too. Which, depending on who’s setting the pace, can bring a social aspect back to big days out, because you can all ride together and the assistance from the motor makes it that much easier to string a coherent sentence together even on the steepest climbs.

Are Electric Scooters Legal In London


Perhaps one of the most important factor to consider in a mountain bike is its ability to perform and deliver. The performance that one gets is dependent on the motor the bike comes with. How a motor transfers power to the drivetrain is crucial to the performance and will provide noticeable difference especially when scaling up a mountain or a steep road.

Do You Need License For Electric Scooter


Me: I had a total of seven knee surgeries over 14 months, and man, my fitness took a beating. Getting back on a bike was both liberating and frustrating. I just can’t go as fast, or as far, as I used to. But, you don’t have to fall victim to a flesh-eating bacterial infection during routine a ACL reconstruction to find the idea of an electric mountain bike appealing. 

What Is The Best Electric Bike On The Market Uk

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