SRAM Rival Crank Arm Assembly - 170mm 12/13-Speed 8-Bolt Direct Mount DUB Spindle BLK E1 Brand-Sunrace Thumblock lever for airtight seal

Thumblock lever for airtight seal and an anywhere-on-frame mounting bracket

Internal Molded Heel Cap

Aluminum arms optimized for stiffness and light weight

Wolf Tooth engineers knew that they wouldn’t be able to get away with any old factory replacement part

Color Black Flat Protection Tread and Sidewall TPI 60 Defined Color Black ISO Width (mm) 76 ISO Diameter 622 / Road / 29" Tire Intended Use Mountain Tire Diameter 29" Tire Bead Folding Labeled Size 29 x 3 Tire Type Tubeless Ready Clincher

SRAM Rival Crank Arm Assembly - 170mm 12/13-Speed 8-Bolt Direct Mount DUB Spindle BLK E1 Brand-Sunrace Thumblock lever for airtight sealSRAM Rival Crank Arm Assembly 170mm 12 13 Speed 8 Bolt Direct Mount DUB Spindle Black E1. SRAM has taken aluminum to another level. Careful engineering has resulted in crankarms that optimize stiffness to weight ratio with material only where its needed8 bolt interface compatible with power and non power AXS spiders and integrated chainrings (Chainring and spider sold separately) DUB bottom bracket adds durability and simplicity (Bottom bracket sold