According to Yoshimura, the R-77 was designed with racetrack feedback from AMA Superbike racers Tommy Hayden and Blake Young, which says a lot about the performances of these exhausts.
With a straight baffle and removable low-volume insert, the R-77 muffler's front cap is MIG-welded, while the end cap is riveted using high-end 304-L polished stainless steel rivets and bands. Offering in a trapezoidal shape, the muffler comes in stainless steel, titanium, or race-inspired carbon fiber.
The R-77 comes as a slip-on muffler, which attaches simply onto the stock exhaust mounting slip-fit, or on various full Yoshimura exhaust systems. The cone end caps come in either polished stainless steel or carbon fiber and the slip-on itself is mounted with a stainless steel mounting clamp.
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 turndown.
The R-77D requires no inserts or restrictions, increasing muffler packing life, and provides 5-percent more open exhaust outlet area and as much as 3 decibels lower sound output (compared to open standard R77). The R-77D also offers greater gains in bottom and mid range power without restrictive inserts.
2011 ZX-10R R-77 Slip-on Systems
- Stainless - Carbon Fiber - Carbon Fiber - R-77 Slip-on - MSRP: $599
- Stainless - Stainless - Carbon Fiber - R-77 Slip-on - MSRP: $479
- Stainless - Stainless - Stainless - R-77 Slip-on - MSRP: $429
- Stainless - Titanium - Carbon Fiber - R-77 Slip-on - MSRP: $549
- Stainless - Carbon Fiber - Carbon Fiber - R-77D Slip-on - MSRP: $599
- Stainless - Stainless - Carbon Fiber - R-77D Slip-on - MSRP: $479
- Stainless - Stainless - Stainless - R-77D Slip-on - MSRP: $429
- Stainless - Titanium - Carbon Fiber - R-77 Slip-on - MSRP: $549
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