SRAM RED AXS Rear Derailleur B-Bolt/Screw and Limit Screw Kit - E1 crank-arm-fixing-bolt it's formulated to maximize extreme

it's formulated to maximize extreme frigid temperature

ribbed body for better traction when not clipped in and chamfered leading edges help reduce rock strikes

36t Ratchet EXP driver for reliable engagement

and it's completely rebuildable for years of worry-free use

SRAM RED AXS Rear Derailleur B-Bolt/Screw and Limit Screw Kit - E1 crank-arm-fixing-bolt it's formulated to maximize extremeUpper Bolt and Spring kits for SRAM rear derailleur maintenance and repairs. Kit includes: B Bolt, B Screw and Limit Screws Compatible with SRAM model: RD RED E E1 SRAM Rear Derailleur Upper Bolt and Springs Upper Bolt and Spring UPC: 710845911392