GPR Exhaust - Trioval Full Line for Yamaha XT 660 X-R - 2004 to 2014 Muffler with:dB Killer-Catalyst Our new lightweight design does

Our new lightweight design does not adversely affect cooling or restrict air flow

2ply+Breaker ply provides excellent stability and bump absorption performance

The navigation holder provides the basis for accommodating common navigation devices through its universal hole pattern and is compatible

Multifunctional

Compressed EVA foam compound padding to distribute the impact force over the widest area yet remain lightweight

GPR Exhaust - Trioval Full Line for Yamaha XT 660 X-R - 2004 to 2014 Muffler with:dB Killer-Catalyst Our new lightweight design doesGPR'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