Yoshimura Signature Series RS-2 Dual Exhaust System, Yamaha Rhino 660, 2005-2007 Exhaust yielding positive power gains

yielding positive power gains

on the other hand

Black Diamond Valves

400X or XR400 gives a noticeable power increase without a loss in reliability

KEEPS THE AIR FILTER CLEAN

Yoshimura Signature Series RS-2 Dual Exhaust System, Yamaha Rhino 660, 2005-2007 Exhaust yielding positive power gainsYoshimura RS 2 Exhaust System Stainless Header Stainless Muffler Stainless End Cap If you're looking for a versatile and potent pipe designed to boost both low range and high RPM performance, you can't do better than the RS 2 Dual Full System. The larger volume dual muffler configuration enables a quieter system. The increased volume allows this lower dB system to still flow enough, yielding positive power gains. The RS 2 Dual is also produced using