JRC Pulley Wheels Ceramic 12S 13T For. Shimano MTB

Give your Shimano 12-speed MTB a slicker, faster feel. JRC Components’ 13-tooth pulley wheels are CNC-machined from anodized aluminum and spin on hybrid ceramic bearings that cut friction, tighten shifting response, and maintain speed over rough terrain. Each bearing is factory-greased for year-round use, while the larger 13T profile improves chain wrap for smoother, quieter operation. At just 24 g per set, they’re a lightweight, durable upgrade.

- Hybrid ceramic bearings reduce rotational friction for crisper shifting and improved drivetrain efficiency
- CNC-machined alloy pulleys deliver precise tooth profiles and long-wear durability at low weight
- 13-tooth design increases chain wrap for smoother, quieter chain engagement on rough trails
- Factory-greased, low-maintenance bearings are ready for all-weather, all-season riding
- Ultra-light at approximately 24 g per set without sacrificing stiffness or alignment
- Direct replacement for stock Shimano jockey wheels—no modification required

Specifications
Brand: JRC
Model: Pulley
Type: Ceramic Wheels
Size: 13 T
Speed: 12 S
Color: Black