Race Face Aeffect-R Crank Arm
Best durable upgrade for electric mountain bike enthusiasts seeking reliable performance
These forged aluminum cranks prioritize raw durability over gram-shaving, making them an ideal upgrade for aggressive e-mountain bikers who prioritize reliability on the trail. While they add a bit of heft compared to carbon alternatives, the robust construction and seamless Bosch motor compatibility offer peace of mind when you’re pushing hard.
$104.99
at
Tree Fort Bikes
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Who it's for
- Aggressive trail riders seeking reliable components for technical terrain
- Technical climbers navigating rocky trails with low bottom brackets
- E-bike owners looking for a versatile aftermarket upgrade
Who should skip it
- Weight-conscious riders prioritizing the lightest possible build
- Custom builders wanting a flashy or high-end visual statement
- Home mechanics without specialized e-bike motor tools
Performance breakdown
Structural Integrity
Forged 7050 aluminum provides exceptional resilience against aggressive trail impacts.
E-Bike Compatibility
Seamless integration with Bosch Gen 4 and Gen 5 drive systems.
Weight Efficiency
Lightweight profile improves handling without sacrificing necessary e-bike durability.
Installation Versatility
Cinch direct mount system makes chainring swaps quick and straightforward.
Finish Durability
Satin coating resists scuffs and wear from frequent trail contact.
Pedal Clearance
The 160mm length reduces pedal strikes on technical, rocky terrain.
Key Specs
Material
7050 Aluminum
Crank Arm Length
160mm
Intended Use
E-bike, Enduro
Chainring Mount Type
Cinch Direct Mount
Number of Chainrings
1
Weight
453.59 grams
Bottom Bracket Compatibility
Bosch Gen 4 / Gen 5
Crank Construction Type
Forged
Pedal Spindle
9/16 inches
Spindle Interface Type
ISIS
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