K & N Universal Air Filter RU-4710 VX-Pro4 Block Helmet A bit louder than Cobra's

A bit louder than Cobra's standard offerings It produces that deep rumble you expect

This YXZ exhaust system was developed using the same technology that has powered the Monster Energy Graves Yamaha Factory Racing team to 8 AMA / MotoAmerica Superbike championships

Foam hardness/stiffness has been tested and manufactured to the specifications of our factory riders

they also contribute to the power gains from the mufflers For models that use a cross-over on the stock system

K & N Universal Air Filter RU-4710 VX-Pro4 Block Helmet A bit louder than Cobra'sMatch the o. d. of your carb throat with the i. d. of the filter (given in inches and millimeters) All clamp directly to the carburetor throat, replacing the stock airbox and filter element