GPR Exhaust - Trioval Double Slip-On for Ducati ST4 ST4 S - 1999 to 2005 Muffler with:dB Killer-Link Pipes The ventilated chest protective armor

The ventilated chest protective armor (CE approved) is easy to adjust and remove using the Velcro closure

Will flush and back flush injectors for best possible cleaning process

Outside height: 131mm

The new upgraded motor packs a punch with additional low-end power and torque allowing for more aggressive riding on more varied terrain

GPR Exhaust - Trioval Double Slip-On for Ducati ST4 ST4 S - 1999 to 2005 Muffler with:dB Killer-Link Pipes The ventilated chest protective armorGPR'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