Gruppe S / Dynamic Autosports / Hankook Tire GTR Drift Car

Posted by Gruppe S On November 5, 2009

Check out our new Project GTR Drift Car for Formula Drift. Stay up to Date with Developments on the Car here on the Gruppe S Blog

Check out the new End of the Year Gruppe-S Drifting Season Video

Posted by Gruppe-S On November 3, 2009

Robbie Nishida, Eric O'Sullivan, Ryuji Miki and the Hankook Tire Drift Team Video Showcasing our strong 2009 Season.

Check our our Holiday Deals @

Posted by Gruppe S On July 24, 2009

Check out for all the great deals on all your aftermarket performance part needs. Located in Lake Forest, California, Gruppe-S carries thousands of different products and has over a Million Dollars of products IN-STOCK.

Robbie Nishida Qualifies Number One at Formula Drift Las Vegas!

Posted by Gruppe S On July 10, 2009

Robbie Nishida, Driver of the Dynamic Autosport / Hankook Tire 305Z Qualifies in the number one spot at the Formula Drift: Round 4 Las Vegas Speedway Event

Hankook Tire F200 FULL RACE SLICKS On Special at Gruppe-S Now!

Posted by Gruppe S On July 25, 2009

PTop-notch performance slick tire with consistency and high mileage on dry or damp track. Designed for both Formula Car and Touring Car applications by Hankook now in stock at Gruppe-S with special deals on various sizes, call in for details! (949) 457-1234

The Subaru Bearing Shortage is Over!! Mahle Motorsports EJ Bearings!

Posted by Gruppe S On Friday, July 23, 2010

Recently the Subaru community has been faced with a shortage of the production of engine bearings which has been a bit of a hit to the Engine Building Community. Gruppe-S has searched high and low to offer our customers a solution for our race engines and after much leg work we are extremely happy to introduce the release of the Mahle Motorsports bearing. With a long standing heritage in racing specifically in Formula One, Mahle Motorsports manufactures some of the world's finest bearings. These bearings are not the same as the Formula 1 bearings but are now being built by the same people who build their bearings and going to be available here from Gruppe-S.

These specific Subaru bearing are being used specifically in WRC cars in Europe and will be testing the bearing here shortly at Gruppe-S as well as customer motors and also on famous RWD Hankook drift car.
Some of the special Benefits of Mahle Motorsports bearings
Laser Marking

The cheapest method of identifying a bearing is by stamping, and in motorsports this can compromise some performance. The embossed section on the bearing causes less efficient heat transfer because there is less surface contact. Laser marking is an alternative method which creates smaller, more consistent marking which does not distort the backing and as such does not disrupt the backcontact and subsequent heat transfer.

Racing Notch

1. The first is that it enables the cross sectional area of the joint face to remain fully intact such that the hoop stresses in the bearing caused by the interference fit with the housing are equally distributed.

• A conventional notch requires a section of the material to be pressed back from the joint face which reduces the cross sectional area and therefore there is less material with which to support the load imposed by the interference fit of the bearing assembly.

• The racing notch allows the contact pressure between the bearing and housing to be maximised if required. This allows the housing to provide maximum support for the bearing and the optimum heat transfer from the bearing into the housing.

2. The second advantage is that the bore of the bearing remains uninterrupted which creates a better surface for the formation of the oil film and it also removes an oil leakage path.

1 Response to "The Subaru Bearing Shortage is Over!! Mahle Motorsports EJ Bearings!"

  1. Like Subaru i think other car manufacturers may be face the same problem, so they should think about this.


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