This is a pack of two optional Mugen Steel Kingpin Balls. These kingpin balls are heavier than the stock parts, and eliminate the need for arm weights.
This is an optional set of Mugen Seiki Aluminum MTC1 Lower Arm Mounts, intended for use with the MTC1 Competition 1/10 Electric Touring Car Kit as a replacement for the stock plastic mounts.
This is a pack of two optional Mugen 1mm MBX8 Graphite Rear Lower Arm Plates. These plates attach to the suspension arm to increase stiffness. Mounting hardware not included.
This is a new HD differential gears for the MTC1/MTC2. These gears are made from a new material to improve durability and will allow for a smoother differential operation for a longer period of time.
This is a set of 3 replacement long life tempered steel clutch springs for the UR Compak clutch system. These are optional springs that you can use to fine tune the way the clutch engages by using different tension clutch springs.