Nitro Rustler TRX 3.3 Racing Engine Upgrade!

This Nitro Rustler originally had the TRX 2.5 engine. Now it has the TRX 3.3 and also a front hex conversion. The front hex conversion uses the steering blocks, caster blocks, ball bearings, and king pins from the electric Rustler. Keep in mind there needs to be minor drilling of the lower caster block holes. The wheel bearings are 5x11x4mm sized. All 12 friction peg holes on the 70t spur gear also need to be filled w/ part no. 4685