HD 39T Spur (TRX-4) 5687SL 1100Kv so you’re ready for reverse

so you’re ready for reverse as soon as you install the kit

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all my batteries will be replaced with these

Precision manufactured screw mounting holes for fast and easy servicing

TSM intuitively corrects the 4-Tec VXL's line for faster exit speeds

HD 39T Spur (TRX-4) 5687SL 1100Kv so you’re ready for reverseBillet Machined HD 39T Spur Gear for Traxxas TRX 4 Scale & Trail Crawler C28198 Make your drivetrain stronger on your Traxxas 1 10 TRX 4 Rock Crawler by installing our Billet Machined HD Spur Gears. Our spur gears are a bolt on upgrade that replaces your stock molded spur gear (Traxxas OEM part #8053) with heavy duty steel. The Billet Machined HD Spur Gears come with new slipper pads and are available in the OEM 45 tooth size (#C28199) as well as a