Upgrade Parts

Metric brass rear hub for the stock versions of the 2024 Assault HB, 2024 Prodigy, 2024 Assailant, 2024 Mistress, 21+4 Assault, 21+4 Assailant, and 2025 Hustler. Compatible with all 24 dirt oval cars, but it will need the GFR-1230 Axles and 68mm dog...

Big bore 3 hole piston compatible with the QS-5049, QS-5050, QS-502, and QS-5053 shock shafts

Metric aluminum rear hubs for rubber tire cars. Set of two. 

26T Aluminum Idler Gear for the 2021 Laydown Transmission (GFR-1177 case), GFR-1187, GFR-1187M, GFR-2054, GFR-2061