DG Performance 02-4250 - R-Series Slip-On Exhaust with Spark Arrestor - Ball Burnished fits Yamaha TT-R 250 (1999 - 2006) DG R-Series - A phenominal value! Aluminum body and Stainless steel midsection Repackable muffler Approx. 5.5 pounds Quality is excellent. The quality compares well to almost anything this side of a $600 complete system