As stated in general fitting/safety instructions

The specially developed Rust Defense System coats internal engine components providing unsurpassed rust and corrosion protection

Dimensions: 0

offering a bit of built-in flexibility to disperse energy

developed specifically by our R&D department for motorcycle use

GPR Exhaust - Trioval Slip-On for Triumph Sprint ST 955 - 1999 to 2004 Muffler with:dB Killer-Link Pipe As stated in general fitting/safetyGPR'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