Includes: Gear, 20-T pinion (32-p), heavy duty (machined, hardened steel)/ set screw

Includes: Gear, 21-T pinion (32-p), heavy duty (machined, hardened steel)/ set screw

Includes: Spur gear, 36-tooth (1.0 metric pitch)

Optional Traxxas spur gears allow you to increase or decrease the final drive ratio and tune for different applications. The out-of-the-box spur gear is a 36-tooth.

Spur gear, 54-tooth (0.8 metric pitch, compatible with 32-pitch)

Includes: Spur gear, 54-tooth (0.8 metric pitch, compatible with 32-pitch) (for center differential)

Includes: Spur gear, steel, 54-tooth (0.8 metric pitch, compatible with 32-pitch) (requires #6780 center differential)

Includes: Spur gear, 56-tooth (0.8 metric pitch, compatible with 32-pitch) 

Spur gear, 58-tooth (0.8 metric pitch, compatible with 32-pitch)

Includes: Spur gear, 65-tooth (0.8 metric pitch, compatible with 32-pitch) 

Spur gear, 68-tooth (0.8 metric pitch, compatible with 32-pitch)

Includes: Screws, 2.5x8mm cap-head machine (6)

Includes: Shoulder screws, 3x10mm (6) (with threadlock)

Replacement part for these models: Summit

Cover, gear (upper & lower) (1)/ dust plug (1)/ 3x6mm CS (3) (for single motor installation, use with motor plate #3997X)

Includes: Carrier, differential (heavy duty)/ x-ring gaskets (2)/ ring gear gasket/ bushings (2)/ 6x10x0.5 TW 

Includes: One-way starter bearing

Includes: Pull starter, recoil

Includes: Bumper (rear)/ battery box/ body clips (2), EZ-Start® mount, 3x10CST (2)

Includes: Clutch shoes (2)/ spring (T-Maxx/Revo/Jato/Nitro 4-Tec)

Includes: Nuts, 5mm flanged nylon locking (aluminum, blue-anodized) (4)

4472 - Spur gear (72-Tooth) (32-pitch) w/bushing

Replacement part for these models: Revo, Slayer Pro 4X4, TRX 2.5R, TRX 3.3