Akrapovic Header Pipe - Titanium - BMW R 1300 GSFeatures Constructed from high grade titanium with a carbon fiber heatshield Intended exclusively for closed course competition circuits only Enhances performance and reduces weight Tubes with a bigger diameter than the standard stock system and removal of the catalytic converter allow for enhanced gas flow Pre muffler offers a unique sound experience, producing a deep racing tone from the boxer engine Upgrade results in a 54. 84% (3. 4 kg) weight