This high-performance kit provides everything you need to rebuild your differential for smoother operation and extended durability

Standard 540 size brushed motor

which allows the performance envelope of this airplane to expand with the pilot's flying skills and makes flying a more enjoyable overall experience

This kit does not include any clear parts

1UP Racing - Pro Duty Titanium Upper Screw Set, Tamiya TRF 421, Raw Titanium Stickers & Decals Other Stickers This high-performance kit provides everythingUnleash the full potential of your Tamiya TRF 421 with a 1up Racing Pro Duty Titanium Upper Screw Set. Meticulously crafted from Grade 5 titanium, this upgrade not only ensures exceptional durability but also significantly reduces weight compared to traditional steel screws, providing your TRF 421 with a competitive edge on the track. This 69 piece set is all you need! They include Lockdown Head screws for servo mounting to ensure a secure fit for any