FMF Powercore 4 Muffler Aluminum for Yamaha TTR50 2006-2009 044156 Size: YAMAHA 4-STROKE TT-R50 2006-2009 Style: FULL-EXHAUST/SYSTEM 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.