Discontinued - Aluminum tuned pipe for T-Maxx/ pipe hanger/ screws/ nuts (strong power across mid and upper RPM range) (blue-anodized). TRX 2.5 2.5R & 3.3 engines require pipe coupler (part 4941) to connect to stock rear exhaust header (header not includeAluminum tuned pipe for T Maxx pipe hanger screws nuts (strong power across mid and upper RPM range) (blue anodized). TRX 2. 5 2. 5R & 3. 3 engines require pipe coupler (part 4941) to connect to stock rear exhaust header (header not included). Universal