The R-77D is a dual-outlet version of the race-proven R-77. The R-77D boasts a carbon fiber cone end-cap and polished stainless steel dual outlet turn-down. The R-77D requires no inserts or restrictions, increasing muffler packing life, and provides 5% more open exhaust outlet area and as much as 3 decibels lower sound output (compared to open standard R-77.) The R-77D also offers greater gains in bottom and mid-range power without restrictive inserts.
Slip-On includes R-77D muffler, stainless steel tail-pipe, installation hardware, and step-by-step instructions.
Note: For Closed Course Competition Use Only. Not Intended for Street Use.