Traxxas Nitro Rustler Pro.15 to TRX 2.5 Upgrade Kit (TRA4400)

All the necessary hardware to bring older Traxxas models up to full TRX 2.5 spec is included such as; header, pipe, pipe hanger, coupler, linkage, and additional components specific to each model. Major components come pre-assembled and pre-adjusted from the factory. Detailed instructions are included for each. TRX 2.5 Racing Engine™ (model TRA5207) sold separately.