Slipper Clutch Eliminator +aluminum Bearing Adapter&0.8M 32P Hardened Steel 52T Spur GearTraxxas Rally 4x4. eleminate the slipper assembly on the Traxxas 1/10 Stampede / Slash 4x4 VXL Transmissions. Simple to install, use your existing cross pin,, spring, nut to complete.