Arrow Yamaha R1/M Race-Tech Titanium with Carbon End Cap Silencer Category_Towels The 17 mm nut is

The 17 mm nut is crossed-drilled so racers can safety wire the filter to their bike

Twos – Lens (w) 54mm

Four chunky wheels for maximum stability

K&N's Universal Air Filters are designed and manufactured for a wide variety of applications including racing vehicles

Arrow Yamaha R1/M Race-Tech Titanium with Carbon End Cap Silencer Category_Towels The 17 mm nut isNote Correct fitment for 2015 2016 models, this silencer is designed to either connected to the ARROW Central Non Cat Link Pipe Part# 82 716 30MI Or alternatively, the O. E. exhaust headers collector unit can be retained. Refer to the model diagrams above. In the diagram, a Broken Line indicates that both of the connected items are optional for initial fitment. Note Correct fitment for 2017 UP models, this silencer is designed to either connected to