If you are using the ZS axles and ZS knuckles these plates are designed to compensate for the slop elimination

(2) Delrin 0 Degree Knuckles

If you are currently using the soft big block battery , this adaptor allows fitment into your R1 the weight of this adaptor is equal to the Big Block when using the HC 350's

Spare plastic parts of the RTB ball diff For body and chassis of model car 1/28 radio controlled.

R.1 Shock Mount  (Rearward pivot point)

MWX R1 has the most versatile front end available everything you need to adapt your MWX R/1 to any track in any situation The High Roll Center 1–3 plate for the MWX R.1 is a precision-engineered tuning component crafted from 7075 aluminum, a high-strength alloy known for...

Optional aluminum chassis for RTA with LRC conversion kit. Possibility to add brass inserts (RT090) to adjust the weight distribution. The chassis weighs 48gr and each brass weight weighs 2.6gr. So you can reach a total weight of 58.4gr. The original chassis weighs 19gr. So,...

R.1 Brass Chassis W/FPM