6x12 Rubber Sealed Ball Bearings (10) 6x12x4 for Traxxas RC Vehicles 5117 Revo E-Maxx E-Revo Summit XO-1 T-Maxx Slash 4x4 TRA6117 Rubber Sealed Ball Bearings have maximum protection, and are ideal for off-road racing. They protect well against exposure to dust, dirt, and moisture, which can destroy bearings. Includes ten (10) replacement 6x12 Ball Bearings for Traxxas RC Vehicles (or any other applications where 6x12x4mm MR126 bearings are required). Advantage Bearings have been run by some of the fastest racers in the world and have won multiple ROAR US National Championships. Over 250,000 bearings have been sold to satisfied racers all over the world! Meets/Exceeds OEM Specifications for Traxxas 5117 (TRA5117) 6x12 Ball Bearings, used in many Traxxas models. Please reference your manual for required sizes and installation instructions. Known to be Compatible With: Traxxas Slash 4x4, Revo, E-Maxx, Stampede 4x4, E-Revo, Funny Car, Rally, Summit, XO-1, Telluride, T-Maxx, Ford GT, Rally Fiesta NOS, TRX-4