GPR Exhaust - Trioval Slip-On for Yamaha YZ 450 F - 2007 to 2009 K-Type-Underwear 12 CFM @ 1

12 CFM @ 1

Blue-anodized bearing protectors are made from 6061 billet aluminum and laser-etched for easy identification

carry in your tank bag

Mechanisms and retaining clips are replaceable

The addition of the internal Structural net and Peripheral belt further strengthen the shell with minimal increase to weight or thickness

GPR Exhaust - Trioval Slip-On for Yamaha YZ 450 F - 2007 to 2009 K-Type-Underwear 12 CFM @ 1GPR'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