SRAM RED Crank Arm Assembly - 170mm 12-Speed 8-Bolt Direct Mount DUB Spindle Interface Natural Carbon E1 CheckoutSpec= 190x42.5 Compatible with 250 Wh Bosch

Compatible with 250 Wh Bosch PowerPack range-extender battery ​(sold separately)

Primary Color Black TPI 60x2TPI Labeled Size 27

2 Color Silver Clamp Style Standard Rails

Large ramped center knobs form a nearly uninterrupted centerline that decreases rolling resistance and improves lifespan

SRAM RED Crank Arm Assembly - 170mm 12-Speed 8-Bolt Direct Mount DUB Spindle Interface Natural Carbon E1 CheckoutSpec= 190x42.5 Compatible with 250 Wh BoschSRAMs lightest and stiffest crank arms Compatible with 8 bolt spiders, chainrings, and powermeters SRAM Model ID: FC RED ASSY E1 TECH SPECS Crank Arm Length 170mm BCD Direct Mount SRAM 8 Bolt