FMF Factory 4.1 Slip-On Muffler TI Stainless for Honda CRF450R 2005-2008 041171 Size: HONDA 4-STROKE CRF450R 2005-2008 Style: EXHAUST/SLIP-ON MUFFLER Color: silver Warranty: All merchandise manufactured by FMF Racing has a warranty against manufacturing defects for a period of one (1) year from the date of invoice. See their site for full details.