Thanks to their simple design

in racing or heavy-duty usage)

Unique shape

unpleasant effects of a tight knee angle

and snow for a clearer view of the trail ahead

GPR Exhaust - Trioval Slip-On for BMW R 1200 GS Adventure - 2013 to 2013 Muffler with:dB Killer-Link Pipe Thanks to their simple designGPR'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