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These E-MTB crank arms feature a rock-solid aluminium construction, which makes them more than capable of handling the increased speeds and intensity that's associated with electric mountain bikes. Shimano has also taken the design of these crank arms up a notch by equipping them with Hollowtech II technology. This means that you'll benefit from their fantastic strength to weight ratio as you weave between the MTB trails at speed.
Hollowtech II: Hollow forged crank arms. A lightweight crankset not only reduces the bike’s weight, but decreases rotating mass to aid in acceleration. The challenge is to reduce the weight of the crank without reducing its strength and rigidity. SHIMANO’s advanced forging technology has solved the problem through the HOLLOWTECH crank. Just like high quality frame tubing, a hollow crank arm can provide amazing strength and rigidity at very lightweight.
Dynamic Chain Engagement: Ensures secure chain retention.
We will happily refund any item purchased on Wiggle if returned to us within 365 days; excluding Wiggle gift vouchers, nutrition and customised products, except when faulty.
Please note: Bikes and other bulky items cannot be returned using our local returns service (where applicable). Please contact us and we can arrange to collect these from you using our discounted courier rates. There is a fee for all collections, except for faulty products.Returned goods must be unused and supplied with their original packaging, unless the goods are faulty. Wiggle will pay the return postage costs for any faulty items.