Blue inner lining makes the contents easy to see

Memory foam metacarpal-knuckle protection underneath the leather

Just remove the filter periodically

More direct riding experience

The cartridge can be replaced easily and quickly by the user

GPR Exhaust - SatInox Slip-On for Yamaha WR 400 F - 1998 to 2000 Muffler with:dB Killer-Link Pipe Blue inner lining makes theGPR's Satinox silencer is made of 304 stainless steel. It has an oval shape with a diameter of 90mm. 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 WEIGHT: Lighter than stock exhaust Technical