All Balls Racing 15-17 Arctic Cat ZR 4000 EFI Jack Shaft Bearing & Seal Kit Upper Shaft 2009-audi-a6-base-esi3533387 it achieved a power gain

it achieved a power gain of 4

no tools required

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

or removal of factory components

You'll get low weight

All Balls Racing 15-17 Arctic Cat ZR 4000 EFI Jack Shaft Bearing & Seal Kit Upper Shaft 2009-audi-a6-base-esi3533387 it achieved a power gainAll 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