GPR Exhaust - Trioval Full Line for Yamaha XT 660 X-R - 2004 to 2014 Muffler with:dB Killer-Catalyst Equipped with Euro 4 and

Equipped with Euro 4 and Euro 5 O2 sensor housings

Replacement set of 2 x hook straps and 4 x subframe loops (black) for US-5 only

Visually the metal chain guard fits much better with the overall concept of a touring enduro like the CRF1100L

The compression arch bumps up the comfort stakes

Stretch V-shape and Velcro® dual-construction closure system with gripper tab

GPR Exhaust - Trioval Full Line for Yamaha XT 660 X-R - 2004 to 2014 Muffler with:dB Killer-Catalyst Equipped with Euro 4 andGPR's Trioval series is a GPR best seller, with a classic ovoid drop shape. It is made of hand polished 304 stainless steel and has a diameter of 100mm. Product Features SOUND: Upgraded sound from stock exhaust. Although louder than stock but in compliance with the limits prescribed by law, this exhaust produces the softest sound of all the GPR exhausts. PERFORMANCE: Upgraded performance from stock exhaust QUALITY: Italian made with high grade welding