Sirio Efra 2058 pipeset, designed to be coupled with the XL range of engines. This exhaust has been tested by ourselves with the XL3 and XL7 nitro off road engine and found it gave a good all round performance and fuel mileage, the exhaust is most likely the best sounding pipe on the market to which always helps..
Inside the box.
Manifold to pipe springs
Manifold to engine springs
Grub screw for mounting the pipe.