SPARK ARRESTOR SLIP-ON MUFFLERSFeature a screen-type spark arrestor that does not interrupt exhaust flow or performanceElliptical aluminum can offers strategic sizing for superior performanceOptional Quiet Core insert will provide a decrease in sound level if desiredComputer-designed and dyno-tested..
Yoshimura's R-77D three quarter exhaust is a dual-outlet version of
the race-proven R-77. It offers greater gains in low and mid range power
without restrictive inserts.
The R-77D requires no inserts or restrictions, increasing muffler
packing life and providing five percent more open exhaust..