Aeffect e-MTB Crankarms


Aeffect e-MTB Crankarms


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Strong Stuff

We made the Aeffect arms from net forged 6066 alloy because we knew they are going to have to stand up to big trail days and sick drops – ebike style.

Know Your Q-Factor

eBikes require wider Q-factors than regular bike so we adjusted Aeffect eBike crankarms to leave just the right amount of clearance for Bosch motors.

Three Is The Magic Number

To fit the more riders and more rides, these crankarms come in the three different length options, including 165mm.

Aeffect 2–eBike Boogaloo

The ebike army asked for it and Race Face delivered. Introducing our fan favorite Aeffect crankarms re-configured and optimized to fit the specific needs of ebike shredders everywhere. 

These cranks are designed for ebikes only. If you have any questions on compatility please contact our team.

Aeffect e-MTB Crankarms


Rider Style

Cross Country
All Mountain


Crank Compatibility Bosche Performance Line CX & Bosche Performance Line Motors
Includes Pedal Washers (Chain Rings & Bottom Brackets sold separately)
Crank Arm Material 6066 Aluminum
Material 6066 Aluminum
Weight 499g
Weight Conditions Crank Arms Only

Reviews / Q&A

Free Shipping Over $100. Doesn't Fit? Ship it Back.

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Customer Reviews

Based on 5 reviews
Need to modify to fit Yamaha PW-X

These will not fit on a Yamaha PW-X motor without modifying, on the right hand crank the back of the Isis Spline is too close to the spider Lockring, causing it to catch, damaging the crank - I took my Dremel with a Cut off disk, and trimmed both cranks down, rounded the sharp edge, and painted them - fits perfect now - shame they do not come from the factory with an extra 2-3mm of clearance needed.
But you can make them fit and they are great once they are modified.
5 Stars if they make them the correct size from new.

New 165 Aeffect

Bent a factory arm - Powerfly LT7 -on a tree stump. Local BS thought it would take 3 to 4 weeks to get a set in. Contacted Raceface directly, they were great. Ordered the shorter crankset, RaceFace were super fast and efficient in getting the cranks to me and minimizing my down time.
Love the crankset and really happy with RaceFace service !!

Happy with the cranks

I have a Giant Fathom e+ pro (2020) with the Giant SyncDrive Pro (Yamaha) and needed new cranks (ISIS). After searching the market and realizing my choices are limited at present, I opted to try these out even though they were optimized in design for a Bosch drive. Turns out they fit my bike just fine and I am happy with them.


I had to return them as they were the wrong ones