# Ball bearing performance finds its way to S4 (finally) **URL:** \ **Category:** NYSpeed Automotive\ **Created:** [January 11, 2006, 8:58am UTC](https://forums.speedlife.net/t/ball-bearing-performance-finds-its-way-to-s4-finally/6684 "2006-01-11T08:58:32Z")\ **Posts on this page:** 1\ **Showing post:** 4
**Author:** ![RuBiCaNT](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/rubicant/32/7622_2.png) [@RuBiCaNT](https://forums.speedlife.net/u/RuBiCaNT)\ **Post date:** [January 11, 2006, 9:09am UTC](https://forums.speedlife.net/t/ball-bearing-performance-finds-its-way-to-s4-finally/6684/4 "2006-01-11T09:09:09Z")
> [@audios](#): > > here is the link: [http://www.autospeedperformance.com/audi/gt25R/GT25R.htm](http://www.autospeedperformance.com/audi/gt25R/GT25R.htm) > > people in the b5 s4 community have been waiting a while for a GT turbo solution for this car. room in the engine bay and oil pressure were two of the main factors in preventing it. > > i do have to say this kit is grossly overpriced. i am sure that cost of materials to ASP was significant as well as R&D, but to ask for 13k not including installation on a car that is roughly 20k used, and to get only slightly better performance over current “best” kits…its rough. > > i will say this kit def has more potential. this is whp numbers on pump gas, and gt25’s. a gt28 can be fitted and tuned now that the manifolds are made, so there is def more power to be had. but at that power level i also think people are looking to lower the compression ratio, or at the very least get some exhaust cams sorted out. thats opinion though. > > i almost wish i had 13k to test this kit out, for the sheer reliability of the ball bearing turbos vs. the journal…oh well i guess i am getting old and have to think of other things to do to worsen my credit score 🙂 > > hope you enjoy the link $13,000 is a lot for a turbo kit but they give you a ton of stuff. I think the Twin GT25R’s is perfect for that motor’s displacement too!! Should be really fun to drive. --- _[View the full topic](https://forums.speedlife.net/t/ball-bearing-performance-finds-its-way-to-s4-finally/6684)._