Next down the list is a partial compromise between all-out motorsport and street use, with close ratio dog engagement gears from 1st through to 4th but retaining the stock WRX 5th gear. Primarily this box would be used for drag racing, and high performance street racing or rallying. The disadvantages with this box are that the straight cut gears are very noisy, and not nearly as long-wearing as helical cut synchro gears. This box is good for drag racing, (used in cars that run under 9 second times), competitive circuit racing and high-level rallying. The straight cut gears from 1st to 4th are virtually unbreakable and can handle up to 500 kw of power at the wheels.
This is the strongest 5-speed option available. It comes with a quick-changing short-throw action, and can handle up to 520 Kw at the wheels. Because the gears are straight cut the power engagement is direct with minimal power loss. Because there are no synchros taking up space the gears can be made larger and stronger. Shifts are fast, and clutch-less. The dog engagement box is super-strong and virtually unbreakable and is used for all-out drag racing and other extreme applications. However this type of box wears faster than a stock helical synchro box, and is a lot noisier. Enthusiasts generally don’t mind the whining noise of a dog box transferring 700 horsepower, but overall, it’s not the best option for daily street use.
Billet Selector Fork solutions offer significant increases in strength over standard alloy items.
1/2 selector fork: Please refer to "PDF Price list" for pricing.
3/4 selector fork: Please refer to "PDF Price list" for pricing.
5/R selector fork: Please refer to "PDF Price list" for pricing.
This device prevents dual gear selection which can occur due to the factory design of the Subaru gearbox, combined with the instant gear selection benefits of dog engagement. A must-have for anyone purchasing a dog engagement gear set for Subaru 5 speed gearbox.
For the driver who needs a strong gearbox combined with the driveability and reliability of a stock gearbox, this is a good option. With super strong PPG billet helical synchro gear set from 1st to 4th and the stock 5th gear, this option increases the power rating of 1st to 4th gears to 300 Kw while retaining factory level driveability and smooth quiet operation. This option can be used for club circuit racing, hill climb events, and a variety of other motorsport applications, while providing a smooth quiet driving experience for day to day motoring. A great upgrade for the enthusiast, who is not necessarily a full time race driver and needs a car that can withstand spirited driving while still being suitable for the daily commute and family outings.
With synchro straight cut gears, and stock 5th gear, your car will drive as smoothly as stock, but with the characteristic whine of a dog box from 1st to 4th and enhanced power transfer efficiency. Of course the straight cut gears will absorb much more power than the stock helical gears.
See our optional PPG billet selector forks and front LSDs.
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 Subarus heading into the 8 second ET bracket when drag racing.
All the other assemblies utilise the standard H-pattern shift sequence. Now a sequential shift option is available in a six-speed dog-engagement box to add more speed and precision to shifts. For the ultimate in high speed performance on the circuit, on the street or the strip this is the apotheosis of manual gearbox technology. The six-speed dog engagement sequential gearbox is a joy to operate and can handle all the power you want to throw at it. Go hard with no fear.
The PPG 1st to 5th set for the 6 speed WRX gearbox is fully FIA Group N rally compliant and is commonly used by top Group N rally vehicles as well as track day, circuit racing and Autocross cars. Drivers of cars equipped with this gear set have stood on the podium in Rally of New Zealand, China Rally, Asia Pacific Rally, Japan Rally and Rally America events. Their success is down to the attention paid to detail from design to assembly. Minute considerations such as curved dog engagement ring radiuses, and all-new gear profiles ensure the strongest possible gear sets, and minimise the chance of failure.
PPG offers two different rear wheel drive conversion spools for 5 Speed WRX gearboxes. Please specify early (pre-99) or Late (99-) when ordering. This product has been reliably used in top level drift cars under punishing conditions.
Horsepower Rating: 800 hp
Centre Diff (Torsen Type)
The Torson centre diff is a high-horsepower rated item that offers significant increases in traction on uneven and broken surfaces. For 1999 and onwards. Please check type and year before placing any orders.
These gears complement a bulletproof ADS/PPG Subaru gearbox to be used for extreme applications such as drag racing with power transfer in excess of 500 Kw at the wheels.
ADS and PPG make a natural partnership. We understand gearboxes and the needs of our customers, and PPG provide the solutions, with a wide range of quality products. Because we have such a variety of customers with such different needs, from family transport to rally racing, we have developed a line of ADS assembled PPG gearboxes to meet requirements ranging from longevity to increased power.
The PPG range of gear sets ideally complements our own gearbox designs, from the ADS hybrid 5-speed upgrade box to the 6 speed STI conversion. With PPG we can go still further with custom engineered dog engagement boxes, synchro or non-synchro, and super-strong helical cut synchro gear sets.
Very early on, we found that there are many performance parts suppliers and gearbox repairers around the world who sell cheap, inferior products marketed as premium. It’s our philosophy to make sure that our products are truly the best available. In production too we aim to be the best. All Drive Subaroo don’t just put gearboxes together like Lego blocks. We’ve carefully thought out all our setups, and spent hundreds of hours of building and testing to produce the optimum in performance potential and durability.
All Drive Subaru have assembled the most highly skilled group of Subaru techs in the country, together with the finest facilities available outside the dealer network. Our crew have been trained in different specialist areas, and we know more about Subaru OEM and after-market gears than the dealers, who bring any such jobs to us. We don’t just sell gearboxes, we also offer technical support and assistance throughout the process and afterwards. Before you commit to a replacement gearbox, we can talk you through all the available options. Once you’re back on the road, we are ready to assist with any questions you might have. Everyone at ADS is an experienced technician or an auto engineer.
We have one of the best equipped Subaru workshops in the country, and can handle any job, big or small. This means you can count on us to build and install your gearbox with seamless efficiency and the best warranty in the business. If we do the installation, the warranty covers both parts and labour, and we take particular care in installation. Our reputation depends on your satisfaction. We can also ship your PPG gearbox nationally or internationally at very competitive rates to the repairer of your choice, using TNT Transport.
Models, problems, repairs, replacements and upgrades. 5-speed, 6 speed, auto and low range. All you need to know about Subaru transmissions.
6-speed STI gearbox for your five-speed WRX, Forester or Liberty, with optional STI brakes and suspension. Best value upgrade you can buy.
All power passes through the viscous coupling to the front and rear differentials. Learn how the viscous works, what goes wrong, and how ADS can fix it.
At last a solution for VW, Porsche and buggy owners that mates the Subaru gearbox and transaxle to high performance engines in a RWD setup.
ADS and PPG team up to offer the motorsport enthusiast the stongest possible gearboxes for competitive applications from rallying to drag racing.
Australia’s largest third-party Subaru parts supplier sources stock locally and internationally for best prices and fastest delivery. New and used available
With TNT logistics, and a network of ADS approved installers nationwide, we can supply and fit components with overnight service. Learn how.
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