MST RMX 4 S PRO Chassis KitMST (#532217) RMX 4 S PRO RWD Drift Chassis Kit Package Content: Assembly chassis kit Introducing the all new RMX 4 by MST, the next generation of RWD drift cars. It builds upon today's mainstream design but adds innovative enhancements to deliver performance that exceeds expectations. This chassis is perfectly suited for all drivers, from beginners to seasoned pros. Feature: Performance & Chassis Tuning Torsion Type Dual Vertical Deck: Improves