Gearboxes

S&J have been rebuilding and developing Subaru Gearboxes for over 20 years. Our experience both on the track and off is behind each and every build we take on.

Back in the late 1990’s S&J became one of Australia’s leading WRX Gearbox shops due to not only the commonly troublesome standard WRX gear components but also their partnership with Pfitzner Performance Gearbox also established right here in Adelaide in the same era. S&J and PPG have worked on and still do work on many developmental projects together as a team, again S&J’s own Motorsport right from the grass-roots local events all the way through to the National and even International competition that they have engaged has been fundamental to all development!

Reconditioning any model of Subaru Gearbox with Genuine Subaru Parts and Tooling has been and still is a specialty at S&J, from the first generation 5-Speeds all the way through to the current model 6-Speed transmissions.

If your drivetrain has a noise or a shifting issue, contact the team for advice as in some cases, repairs can be carried out with the bulk of the gearbox still in the car, which makes for an even more cost effective outcome.

5 Speed

1st - 2nd Straight Cut Synchromesh Gear Set

This product is rated at 400hp and suitable for street and road race duties. This product is able to be used in combination with the PPG Helical Cut or Straight Cut , Synchro or Dog gears for 3rd and 4th Gear.
 Ratios: 3.083/ 1.845
 Horsepower Rating: 400 hp

3rd - 4th Straight Cut Synchromesh Gear Set

Designed for stand alone use or in conjunction with the WRX 1-2 sets that PPG offer.
 Ratios: 1.32 / 0.95
 Horsepower Rating: 400 hp

1st - 4th Straight Cut Synchro Gear Set

Utilising the stock 5th gear, this set increases the power transfer of 1st to 4th gear significantly whilst delivering factory type driveability combined with quiet operation.
 Ratios: 3.18 / 1.87 / 1.32 / 0.95 / std
 Horsepower Rating: 400 hp

1st - 4th Helical Cut Synchro Gear Set

Utilising the stock 5th gear, this set increases the power transfer of 1st to 4th gear significantly whilst delivering factory type driveability combined with quiet operation.
 Ratios: 3.18 / 1.87 / 1.32 / 0.95 / std
 Horsepower Rating: 400 hp

1st - 4th Straight Cut Dog Gear Set

The PPG 1st to 4th set to suit 5 speed WRX gearbox utilises the stock 5th gear and provides close ratio dog engagement gears from 1st through to 4th . Primarliy used for drag racing and high performance street duties this set has proven its capabilities many 9 second drag racing vehicles the world over. (1st-5th gears pictured)
Ratios: 3.18 / 1.87 / 1.32 / 0.95 / std
 Horsepower Rating: 600 HP

1st – 5th GRP-N Straight Cut Dog Gear Set

One of our most popular rally products. Offering a unique "Short Throw" Shift design, this set has low dog wear combined with the fastest and cleanest shifting we can achieve with todays computer design technology. Strength is unrivalled.
 Ratios: 2.916 / 2.090 / 1.555 / 1.176 / 0.900
Horsepower Rating: 700 hp

Front Torson LSD

This anti-torque biasing differential is of the Torsen Type and offers significant increases in road holding and grip whilst building reliability into the vehicle drivetrain.
 Horsepower Rating: 900 hp

Rear Torson LSD

Subaru WRX 5 Speed Torson Rear Differential. Key to high performance Time Attack ,Sprint , Drag cars. Allows maximum traction and grip over the stock Subaru item. The LSD will increase noise in the cabin and can be set at a range of preloads for various applications.

6 Speed

1st - 5th Straight Cut Dog Set (Group N Rally)

The PPG 1st to 5th set to suit 6 speed WRX gearbox is fully FIA Group N rally compliant. Commonly used by top Group N rally vehicles as well as track day, circuit racing and Autocross cars.
Ratios: 3.33/2.384/1.750/1.33/1.04
 Horsepower Rating: 800

1st - 4th Straight Cut Dog Set (DRAG)

The PPG 1st to 4th set to suit the 6 speed casing is a drag racing specific set. Featuring huge gears rated at over 1000hp , this set is the perfect drivetrain upgrade for manual transmission powered Subaru's heading into the 8 second ET bracket when drag racing.
 Ratios: 3.08/1.88/1.35/.96
 Horsepower Rating: 1000

1st - 6th Straight Cut Dog Set (Group N Rally)

The PPG 1st to 6th set to suit 6 speed WRX gearbox replaces all the stock gearbox internals and is fully FIA Group N rally compliant. Commonly used by Group N rally vehicles as well as track day, circuit racing and Autocross cars.
 Ratios: 3.636/2.375/1.761/1.346/1.062/.842
 Horsepower Rating: 700 hp


 
   
 

CONTACT:
S&J Automotive
31-33 Woodlands Terrace,
Edwardstown S.A. 5039
Phone (08) 8277 2222

 
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