GPR Exhaust - Hyper Sonic Inox Slip-On for BMW F 700 GS - 2011 to 2015 Muffler with:dB Killer-Link Pipe The difference between the two

The difference between the two is the kit (hose and clamps) that comes with them

Valve cover

Waterproof and corrosion proof

Billet aluminum trapezoid body

And it's plug & play

GPR Exhaust - Hyper Sonic Inox Slip-On for BMW F 700 GS - 2011 to 2015 Muffler with:dB Killer-Link Pipe The difference between the twoHyper Sonic Inox is part of the new generation of GPR exhausts, realized with a production process with zero environmental impact. It has dual outlets, sleeve stainless steel 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