Yeah Racing Aluminum Essential Conversion Kit For HPI Sprint 2 #CK-SPT2OR Aluminum Front Lower Arm Set For HPI Sprint 2, Aluminum Bolzen Motor Mount For HPI Sprint 2 Aluminum Rear Lower Arm Set For HPI Sprint 2, Steel Universal Joint Shaft 38mm For HPI Sprint 2 Aluminum Bearing C-Hub For HPI Sprint 2, Aluminum Ball Bearing Steering Set For HPI Sprint 2 Aluminum Front Knuckle Arm For HPI Sprint 2 Aluminum Rear Hub / Knuckle Arm 3 Degree For HPI Sprint 2