Raceface Aeffect R eMTB Crank Arm 170mm BCD: Direct Mount Black Set CheckoutTitle=Rockshox DebonAir Air Spring Sealhead } Wide: 55mm chainline for

} Wide: 55mm chainline for 157mm rear spacing

Reinforced underside X pattern gives extra stiffness

teeth 20t color red

such as newly man-made snow

Raceface Aeffect R eMTB Crank Arm 170mm BCD: Direct Mount Black Set CheckoutTitle=Rockshox DebonAir Air Spring Sealhead } Wide: 55mm chainline forRaceFace Aeffect R Ebike Crank Arm Set 170mm For Bosch Gen4 Drive System 7050 Aluminum Black. The RaceFace Aeffect R eMTB cranks bring the burly purpose driven design of Aeffect R to the Bosch Gen 4 Performance Line CX drive system for seamless motor integration. Optimized for use with Bosch Gen 4 Performance Line CX drive systems Compatible but not optimized for use with Bosch Gen 2 drive systems Constructed of 7050 Aluminum TECH SPECS Color Black