All Balls Racing 15-17 Arctic Cat ZR 4000 EFI Jack Shaft Bearing & Seal Kit Upper Shaft 2009-audi-a6-base-esi3533387 Exhaust Valve: This cat-back exhaust

Exhaust Valve: This cat-back exhaust system incorporates a factory style exhaust valve which use the factory exhaust valve motor (not included)

This allows maximum flow and low turbulence for increased torque

You'll get low weight

Black Finish Stainless Steel

This kit is designed to maximize the performance of your race car suspension

All Balls Racing 15-17 Arctic Cat ZR 4000 EFI Jack Shaft Bearing & Seal Kit Upper Shaft 2009-audi-a6-base-esi3533387 Exhaust Valve: This cat-back exhaustAll Balls Racing Jack Shaft Kits contain chain case input bearing, support bearing, seals, O rings and necessary components needed to install this kit on your vehicle All Balls Racing Jack Shaft Kits contain chain case input bearing, support bearing, seals, O rings and necessary components needed to install this kit on your vehicle Seals are Type TC double lip seals with stainless steel garter springs