Superbike technology and styling Trapezoidal-shaped sleeve Large volume of packing material Straight baffle for ample flow Innovative end-cap Removable Low-Volume Insert &nbs..
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..