5Dev R-Spec Shimano eCranks
Best premium upgrade for performance focused electric mountain bike enthusiasts
These crank arms are a masterclass in clearance, shaving down the profile to help you clean technical climbs without catching your pedals on every rock. You sacrifice a bit of mass-market compatibility for a bombproof, race-ready build that turns your e-bike into a more precise, capable climber.
$449.99
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Who it's for
- Aggressive riders seeking components that handle extreme trail abuse.
- Technical climbers wanting to minimize pedal strikes on rocky trails.
- Style-conscious enthusiasts looking to personalize their high-end e-bike.
Who should skip it
- Budget-conscious cyclists who prioritize functional utility over boutique craftsmanship.
- Owners of non-Shimano e-bike systems requiring a different spindle interface.
- Weight-obsessed racers looking for the absolute lightest possible components.
Performance breakdown
Ground Clearance
Low-profile geometry drastically cuts down on frustrating pedal strikes.
Structural Integrity
Exceeds ISO Race standards for aggressive, high-torque trail riding.
Weight Optimization
Impressively light aluminum construction reduces rotational mass on your e-bike.
Technical Climbing
Short 155mm length provides superior clearance for punchy, technical ascents.
Installation Complexity
Requires precise torque settings that demand careful, methodical workshop attention.
Compatibility
Seamless integration with Shimano EP8 systems for a factory-fit feel.
Key Specs
Crank Arm Length
155 mm
Material
Aluminum
Spindle Interface
EP8 Spline Drive
Q Factor
182 mm
Weight
440 g
Intended Use
Mountain, eBike
Bottom Bracket Compatibility
Shimano EP8
Know before you buy
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Ask Metto anything about the 5Dev R-Spec Shimano eCranks before you decide.
