DG Performance 02-4300 - R-Series Slip-On Exhaust with Spark Arrestor - Ball Burnished fits Yamaha Rhino 660 (2004 - 2007) 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