MWX Performance R1/F1 HARD ANODIZED SIDE SHAFTS AND COLLARS (R1-SS-303) Track You can use metal bearings

You can use metal bearings if you want it to roll a little smooth and/or add a little weight to the front

making cornering smoother and more responsive

They stand up to a decent amount of banging but they won't stand up to abuse or horrible driving if you like to run head first into other cars

The XbilitY XB-F1 was designed to raise the standard in 1:28 scale racing

Engineered for the perfect balance between strength and flexibility

MWX Performance R1/F1 HARD ANODIZED SIDE SHAFTS AND COLLARS (R1-SS-303) Track You can use metal bearingsReplacement Side Shafts & Collars R1F1 Upgrade your drivetrain with these replacement side shafts featuring the latest enhancements for durability and performance. Features: Hard anodized aluminum shafts stronger and corrosion resistant 0. 5g lighter than previous versions for improved handling Now include ball cup ends for better suspension articulation Important Note: The included side collars are NOT the correct size please reuse your current