Associated 81009 Underdrive Differential Gear Set : RC8B3.1

RC8B3.1 Underdrive Differential Gear Set 
This gear set for the RC8B3.1 and RC8B3.1e V3 differentials is great for low traction tracks. The underdrive gear set slows down the rear tire rotation compared to the front, making it more stable on low grip surfaces. 

Features
Using underdrive gears in the rear end makes the rear tires rotate slower than the front
Beneficial when running in low traction conditions to smooth out the car's responsiveness
Compatible with RC8B3.1 V3 differentials on the RC8B3.1 and RC8B3.1e

#81009 contents: 
qty 1 Diff Pinion Gear, 12T 
qty 1 Diff Ring Gear, 42T

This part fits the following vehicles:
RC8B3.1
RC8B3.1e