Full-race two-stroke silencer, The compact design of the short aluminum canister offers optimum performance gains and is recommended for closed-course racing only, Hex head screws are used to secure the inlet cap and can be removed easily for quick re-packing of the silencer, 304 stainless steel intake tube, Double-walled mounting bracket(s), Tig and mig welded for strength and durability, E-Glass internal packing for maximum packing life, Made in the USA