Unscrew pressure pot just enough to release pressure

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Also suitable for numerous models from other brands: Aprilia

And then some

DNA S2 air flow : 86

GPR Exhaust - Hyper Sonic Titanium Slip-On for BMW R 1200 R LC - 2017 to 2019 Muffler with:dB Killer-Link Pipe Unscrew pressure pot just enoughHyper Sonic Titanium is part of the new generation of GPR exhausts, realized with a production process with zero environmental impact. It has dual outlets, sleeve titanium made and caps CNC machined in order to obtain maximum power increase and a better sound. FEATURES SOUND: Upgraded sound from stock exhaust PERFORMANCE: Upgraded performance from stock exhaust QUALITY: Italian made with high grade welding WEIGHT: Lighter than stock exhaust Technical