5Dev R-Spec Shimano eCranks

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- An evolution of the original, now exceeding the ISO Race standard - Low profile crank arm reduces pedal strike during technical punchy climbs, allowing you to clean more sections of trail and get back up to take another lap with less effort - Q Factor: 182mm when installed on Shimano EP8 - Weight: 440g - Please have cranks installed by an experienced E-Bike mechanic. M6X1.0 bolts need to be tightened to 14Nm. Add blue Loctite to each bolt and end cap. Check bolts after your first ride to make sure they are at the proper spec Show more