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. MUFFLER R304 KTM 125/150