5DEV's goal is to develop cranks that can be manufactured in a short period of time. Utilizing 5 Axis CNC machines we can produce product in days vs months or years. These cranks are engineered for aggressive trail, enduro/park and DH style riding. Ideal for charging steep technical chunk, ripping laps at your local park, or sessioning your favorite jump line.Our 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.No excuses! Crank HARDER! Ride longer. Includes Chainring Mounting HardwareMade in San Diego, California Item SpecificationsQ factor182mm When installed on Shimano EP8Crank Length (mm)155 and 160Material7075-T651 Billet AluminumHardwareAlloy steel crank bolt 8mm Hex (50Nm) Billet aluminum self-extractor 16mm hex (2Nm)PreloaderCNC 7075 AlloyDrive / SpindleEP8 Spline DriveDefined ColorBlack and Raw Crank Intended Use E-Cranks for the Shimano EP8 motorPedal Spindle9/16"Weight440g (160mm), 446g (165mm) with hardware includedWarranty5 Year Warranty 5DEV's Complete Installation Instructions Installation: Please get your cranks installed by an experienced eBike Mechanic. M6X1.0 bolts need to be tightened to 14N-m. Add Blue Loctite to each bolt and end cap. Check bolts after your first ride to make sure they are at the proper spec. 5Dev R-SPEC Shimano EP8 eCranks Crankset