This JConcepts Silent Speed spur gear is designed for the Associated RC10B7 platform and features 48 pitch and 81 tooth count. The spur gear uses a noise-dampening design intended to reduce drivetrain sound during operation. It serves as a direct replacement for the standard spur gear in the B7 drivetrain. Features: 48 pitch, 81 tooth Silent Speed noise-dampening design Designed for the Associated RC10B7 platform Factory replacement spur gear 7/7/26 cs