HPI RS4 Suspension Arm Set 1 x Front and 1 x Rear Fits both sides P/N HP A450

HPI / CEN Diff Cup Coupler set for Rush, RS4 or CEN 1 pair. P/N A558 FF232 GX12

RC Battery Holder 4x AA Batteries, JST for RC Car, Buggy or Truck - UK Stock

HPI Racing 72105 Diff Ring D Cut Graphite Diff Hub RS4 Pro3 Pro4 Vintage

RC Battery Holder and On Off Switch. 4x AA Batteries, for Car, Buggy or Truck

Nitro RC car fine foam air filter for RC engines up to .18 1/10 scale - From UK

HPI RS4 Nitro 3 Shock Tower & Bumper set. Includes Front and Rear P/N 85031

RC HPI Pinion Gear 9 Tooth 1:18 Micro RS4 Ken Block Racing Grade (1) 72481