NEW SRAM Rival Crank Arm Assembly - 12/13-Speed, 8-Bolt Direct Mount, DUB Spindle, Black, E1 Crank Length:160mm Brake Levers: Shimano GRX RX820

Brake Levers: Shimano GRX RX820

Surly Ultra New Disc Rear Hubs

Bead to bead tread delivers additional durability and cornering grip

It is rideable and straight enough now

which measures how smoothly you descend a trail so you have a score to beat next time

NEW SRAM Rival Crank Arm Assembly - 12/13-Speed, 8-Bolt Direct Mount, DUB Spindle, Black, E1 Crank Length:160mm Brake Levers: Shimano GRX RX820SRAM has taken aluminum to another level. Careful engineering has resulted in crankarms that optimize stiffness to weight ratio, with material only where its needed 8 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 separately) Aluminum arms optimized for stiffness and light weight 2x Standard: 145mm Q