3942X 12T gear pinion (32-p) heavy duty (machined hardened steel) (fits 3mm shaft)3942X 12T gear pinion (32-p) heavy duty (machined hardened steel) (fits 3mm shaft)Gear, 12-T pinion (32-p), heavy duty (machined, hardened steel) (fits 3mm shaft)/ set screwThe heavy-duty 12-tooth (32-pitch) pinion gear is machined from hardened steel for extra-long life. The gear fits 3 mm motor shafts and includes set screw. Traxxas pinion gears let you fine-tune the performance of your Traxxas model. Changing gear ratios can help balance acceleration and top speed for different running conditions. Please consult your owner’s manual for more information on recommended gearing options for your specific model.Accessory part for these models:Rustler® 4X4 VXLRustler® 4X4Slash 4X4 UltimateSlash 4X4 VXLStampede® 4X4 Unassembled KitStampede® 4X4 VXLStampede® 4X4TRX-4® 1979 Chevrolet® Blazer®TRX-4® 1979 Ford® Bronco®TRX-4® Chevrolet® K10 High Trail Edition™TRX-4® Equipped with Traxx®TRX-4® Ford® Bronco®TRX-4® Ford® F-150® High Trail Edition™TRX-4® Land Rover® Defender®TRX-4® Sport Unassembled KitTRX-4® SportTRX-4® Unassembled KitTRX-6® Mercedes-Benz® G 63® AMG 6X6TRX-6® Ultimate RC Hauler
