Race Face Aeffect-R Crank Arm
Best durable upgrade for electric mountain bike enthusiasts seeking reliability.
Built for the demands of enduro e-biking, these forged aluminum arms prioritize strength without adding unnecessary weight. The direct-mount interface makes drivetrain maintenance and chainring swaps straightforward, offering a reliable upgrade for specific motor systems.
$104.99
at
Airpark Bike Co
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Who it's for
- Aggressive riders seeking maximum durability on demanding technical trails.
- E-bike owners looking for a reliable replacement across different motor platforms.
- Technical mountain bikers navigating tight, rocky sections with low bottom brackets.
Who should skip it
- Weight-conscious cyclists prioritizing lightness over absolute impact resistance.
- Aesthetic-focused riders who want their components to remain pristine indefinitely.
- Home mechanics who prefer working with standard, universal bike tools.
Performance breakdown
Structural Rigidity
Forged 7050 aluminum delivers exceptional stiffness for aggressive power transfer.
Maintenance Simplicity
The CINCH interface makes swapping chainrings quick and frustration-free.
Trail Durability
Built to withstand the high-torque demands of modern enduro riding.
Weight Efficiency
Solid weight for an e-bike component, though not ultralight.
System Compatibility
Perfectly optimized for Bosch Gen 4 and Gen 5 drive systems.
Finish Resilience
Understated matte finish resists scuffs and wear from trail debris.
Key Specs
Material
7050 Aluminum
Crank Arm Length
170mm
Compatibility
Bosch Gen 4 and Gen 5 drive systems
Weight
453.59 grams
Mount Type
CINCH direct mount
Intended Use
E-bike, MTB, Enduro
Bottom Bracket Interface
ISIS
Pedal Thread
9/16 inches
Number of Chainrings
0
Power Meter Included
No
Know before you buy
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Ask Metto anything about the Race Face Aeffect-R Crank Arm before you decide.
