Products tagged with Drivetrain Service Parts

Designed for Shimano and SRAM 11 and 12-speed drivetrains, this KCNC asymmetric pulley uses an offset design and narrow-wide tooth profile to help guide the chain on wide-range cassette setups.

Machined from 7075 aluminum and fitted with a 689 hybrid ceramic cartridge bearing, this KCNC pulley is sold individually for compatible Shimano, SRAM, and Campagnolo 9–11 speed rear derailleurs.

Built for modern derailleur designs, this KCNC long-tooth pulley uses a machined 7075 aluminum body and ceramic cartridge bearing. Choose 11T, 12T, or 14T sizing to match compatible rear derailleur cages.

Machined more aggressively than KCNC’s standard long-tooth pulley, the UL Ultra version uses a 7075 aluminum body, steel cartridge bearing, and long-tooth profile for compatible rear derailleurs.

A standard steel-bearing option in KCNC’s long-tooth pulley range, this 7075 aluminum derailleur pulley is sold individually in 11T, 12T, and 14T sizes for compatible rear derailleur cages.

KCNC specializes in lite weight and robust CNC machined components to lighten up and stylize any ride.

KCNC Ultra Pulley Wheels are CNC-machined from AL7075-T6 aluminum and equipped with sealed bearings for low-friction performance. Lightweight and compatible with Shimano, SRAM, and Campagnolo derailleurs, available in anodized colors.

Titanium front derailleur mounting bolt designed to replace OEM steel hardware. Includes curved washer for proper alignment and load distribution on compatible front derailleur mounts.

Titanium rear derailleur mounting bolt designed for Shimano road derailleurs, including Ultegra R8000. Corrosion-resistant replacement for OEM steel hardware at the derailleur-to-hanger interface.

Lightweight titanium rear derailleur limit screws for precise high/low travel adjustments. Corrosion-resistant hardware replaces stock steel screws on compatible derailleurs.

Titanium square taper crank bolt designed to replace standard steel M8 fixing bolts. Corrosion-resistant and compatible with square-taper bottom bracket cranksets.

Titanium M20 Torx crank cover screw designed for integrated two-piece hollow cranksets. Corrosion-resistant replacement preload cap for Shimano-style crank systems using threaded bearing preload adjustment.