GPR Exhaust - Trioval Full Line for Yamaha XT 660 X-R - 2004 to 2014 Muffler with:dB Killer-Catalyst This new two-layer system provides

This new two-layer system provides maximum versatility and comfort in any season or any weather conditions

Charge & Power two USB devices at once

boots and cable guide as necessary

All Installation hardware

Six-ply rear rating

GPR Exhaust - Trioval Full Line for Yamaha XT 660 X-R - 2004 to 2014 Muffler with:dB Killer-Catalyst This new two-layer system providesGPR'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