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The Best Gearsets for
Street / Full Race
"We have these sets in 800hp cars!"

Note: All transmission prices are based on the current exchange rate and are subject to change without notice. All orders will be adjusted automatically to any new exchange rate. These gearsets are designed for off-road use, and considered racing parts, as such do not carry any warranty either expressed or implied by Xcceleration.com. Xcceleration.com gives no warranties, express or implied, including, but not limited to, the implied warranties of merchantability, condition of parts and fitness for a particular purpose. Xcceleration.com will not be held liable for any damages or labor, whatsoever, which are incurred directly or indirectly on the vehicles or operators or passengers of the vehicle. It is important to understand, these gearsets are driver dependent. Your driving ability decides reliability and longevity. Dog gearsets require constant maintenance and proper shifting skills or you will wear out the 'dogs' very quickly. Prices are for "after the sale" accessories. All prices require the buyer to pay for shipping and duty.



STRAIGHT CUT OR HELICAL DESIGN


Model / No.
Pricing USD
Standard Ratios
Selectors
Remarks

Subaru WRX STi 6 speed Dog gear set

(6 gear set)

$15,979
3.636 /2.38 /1.76 / 1.35 /1.06 /0.84
YES
Replaces: Input Shaft
Selector Shafts
Selector Forks
Selector Fingers
Output Shaft

Subaru WRX STi Convert 6 to 5 Speed Group N gear set

(5 gear set)

$13,979
3.33 / 2.38 / 1.75 / 1.33 / 1.04
YES
Replaces: Input Shaft
Selector Shafts
Selector Forks
Selector Fingers
Output Shaft

Subaru WRX 6 speed Dog Group N

(6 gear set)

$15,576
3.636 / 2.375 / 1.761 / 1.346 / 1.062 / 0.842
YES
Direct fit - no mods needed

Subaru WRX 6 speed Dog Group N

(5 gear set)

$14,421
3.333 / 2.384 / 1.750 / 1.333 / 1.040
YES
Direct fit - no mods needed

Subaru WRX 6 speed, 4 gear

DRAG (dog box)

$11,459
3.08 / 1.88 / 1.35 / 0.96 / std / std
YES
Direct fit - no mods needed

Subaru WRX STi 6 speed, 6 gear

helical (synchro)

$9,599
3.636 / 2.46 / 1.88 / 1.50 / 1.24 / 1.04
NO
Direct fit - no mods needed

Subaru WRX 5 speed 4 Gear

str-cut (dog box)

$8,999
3.18 / 1.87 / 1.32 / 0.95 / std
NO
1/2 Billet Forks supplied (3/4 op)

Subaru WRX 5 speed 4 Gear

helical (dog box)

$8,999
3.08 / 2.15 / 1.50 / 1.05 / std
NO
1/2 Billet Forks supplied (3/4 op)

Subaru WRX 1/2 str-cut

(dog box)

$4,999
3.18 / 1.87
YES
1/2 Billet Forks supplied

Subaru WRX 1/2 helical

(dog box)

$4,999
3.08 / 2.15
YES
1/2 Billet Forks supplied

Subaru WRX 3/4 str-cut

(dog box)

$4,999
1.32 / 0.95
NO
3/4 Billet Fork optional

Subaru WRX 3/4 helical

(dog box)

$4,999
1.5 / 1.05
NO
3/4 Billet Fork optional

Subaru WRX 5 speed 4 gear

Straight (synchro)

$5,999
3.08 / 1.87 / 1.32 / 0.95 / STD
NO
Input Shaft

Subaru WRX 5 speed 4 gear

helical (synchro)

$5,999
3.08 / 1.87 / 1.32 / 0.95 / STD
NO
Input Shaft

Subaru WRX 1st & 2nd

str-cut (synchro)

$4,999
3.18 / 1.87
NO
Direct fit - no mods needed

Subaru WRX 1st & 2nd

helical (synchro)

$4,999
3.18 / 1.87
NO
Direct fit - no mods needed

Subaru WRX 3rd & 4th

str-cut (synchro)

$3,999
1.32 / 0.95
NO
Direct fit - no mods needed

Subaru WRX 3rd & 4th

helical (synchro)

$3,999
1.32 / 0.95
NO
Direct fit - no mods needed

Subaru WRX (5 or 6 speed)

1/2 Billet Selector fork

$825
 
YES
Direct fit - no mods needed

Subaru WRX (5 or 6 speed)

3/4 Billet Selector fork

$825
 
YES
Direct fit - no mods needed

Subaru WRX (5 speed)

5/R Billet Selector fork

$999
 
YES
Direct fit - no mods needed

Subaru WRX Interlocker

(5 speed)

$999
 

Direct fit - no mods needed

Subaru WRX Torson LSD

(Front) (5 speed)

$3,999
 

Direct fit - no mods needed

Subaru WRX Torson LSD

(Center) (5 speed) (99 on)

$3,999
 

Direct fit - no mods needed

Subaru WRX 5 speed RWD

Conversion Spools (99 on)

$999


Direct fit - no mods needed

Subaru WRX 6 speed RWD

Conversion Spools

$999


Direct fit - no mods needed

Subaru WRX Bronze Speedo Gear
$449


Direct fit - no mods needed

Subaru WRX 3rd/4th &

5th / Rev Billet Syncro Hubs

(5 speed)

$755 ea.


Direct fit - no mods needed

Delivery

All above prices do not include shipping and duty, which will be billed directly to the customer. All transmission prices are based on the current exchange rate and are subject to change without notice. All orders will be adjusted automatically to any new exchange rate.

Call for details

 


Sample Ratios for Reference Only

5 Speed Stock - OEM

1st - 3.454
2nd - 1.947
3rd - 1.366
4th - 0.972
5th - 0.738


5 Speed Custom Street Performance-Race

1st - 3.18
2nd - 1.87
3rd - 1.32
4th - 0.95
5th - 0.738 std. OEM


6 Speed Stock - OEM

1st: 3.636
2nd: 2.375
3rd: 1.761
4th:1.346
5th:0.971
6th: 0.756


6 Speed Custom Street Performance-Race

1st: 3.636
2nd: 2.375
3rd: 1.761
4th:1.346
5th:1.062
6th: 0.842



WHY CHOOSE A CUSTOM GEARSET?


The Custom Tooth Profile

We pride themselves on our relationship with our Gearset Manufacturers, Albins and PPG, who custom designed, researched and developed the high performance gearsets we represent, to the highest standard.

The process of gear design is detailed, technical and precise, starting with CAD drawings developed in a state of the art “control room” using the latest software available. These blueprints ensure specifications including tooth count, desired gear ratio and basics like “internal gearbox dimensions”, for your project are incorporated, to produce the strongest, lowest wearing and efficient, tooth profile.

The custom tooth profile drawings are only the first stage of the process. The next step in the production of a Custom Gearset is creating unique tools to cut the gear set to exact design. These tools are high-tech, modern and of the highest quality to ensure each gear set is produced with ultimate precision.

A steel billet (a solid piece of pure steel) is then carved, sliced and shaped with absolute precision by automated, robotic machinery to accurately mirror the design blueprints. Whether helically or straight cut, gearsets are meticulously created with strength and performance.

To compliment the unique tooth profile and further enhance strength and reliability a custom manufactured design and dog engagement gearset uses a distinctive radiused and lightweight dog ring. The Custom dog gear design promotes smooth and rapid gear selection through larger dog engagement pattern, reducing wear with radiused teeth.

Competitor Tooth Profiles

Even some of the most recognized competitor’s, with long term, highly regarded reputations within the high performance field, are still utilizing agricultural, technically-basic and inferior design and cutting methods. These competitors are manufacturing the same product they have for decades, primarily to avoid re-developing existing machinery, tooling and product designs. These “old school” models are susceptible to wear, pitting and entire tooth breakage.

The Advanced Custom Heat Treating Process

The last phase of the gearset production is heat treatment (case hardening). This is not a new approach to strengthening metal component and most clientele of the automotive industry would be familiar with the process of parts being dipped into a heat treating salt bath containing various elements but most importantly carbon.


The “Controlled Atmosphere” heat treatment process applied is a more precise and refined method from the original salt bath heat treating. Using a computer controlled atmosphere (furnace) where carbon and other elements are monitored and maintained at optimum levels via highly advanced software and sensors, ensures accurate and efficient heat treating, consistently producing a well hardened and strengthened product for customers.

High temperature levels are produced to attract and infuse carbon onto the surface of the product, penetrating to calculated design depths to harden it. “Rockwell” tests (an international standard of hardness testing) are performed at regular intervals with sacrificial components as a form of ongoing quality control.

Competitor Heat Treating Process

The basic heat treating technique is at times “hit and miss” given element levels fluctuate and more specifically carbon content is “guesstimated” producing inconsistencies with this practice. Salt Bath techniques were developed pre the 1950’s and have not evolved since then.

The Custom “Product in Stock” Philosophy

When you are involved in motor sport, you want to know that replacement parts for your race car or team are only as far away as the nearest phone and that includes gearsets. Our custom manufacturer produces reliable, high performance, tough gearbox for the motor sport arena, consistently coping with big horsepower, hard driving and extreme loads.

So, when a competitor brand gearbox fails,we have a large range of products available to support race and rally clients.


Which set do I need when ordering?


1994-current 5 speed WRX Owners take note.

Subaru Gearboxes have an unusual variation in the manufacture of 1st and 2nd gear and 3rd and 4th gear on a different year that can cause problems when fitting gearsets. Its therefore very important you know what year gearbox you have in your car. This has become difficult at times as most Subaru owners are now buying a custom gearset after breaking a few standard gearboxes and they may have replaced the gearbox with an entire gearbox from a different year model vehicle.

Please note the information below before ordering.

MY 94,95,96 up to 6/97 Gearboxes have single synchro 1st and 2nd gear up to 7/95
Single synchro 1st , Double synchro 2nd on 8/95 on (must update to 8/95 double synchro 2nd gear !)
Single synchro 3rd and 4th gear to 7/95

MY 97,98 (7/97 to 7/98) Gearboxes have single synchro 1st , double on 2nd, 3rd and single on 4th.
Custom 1-2 sets are a straight C/over . The 3 and 4th sets require a 4th gear synchro ring to be used on 3rd gear which we convert to single synchro.

MY99 on (8/98 on) have single synchro 1st, double synchro 2nd, double on 3rd and single on 4th. 3rd and 4th synchro's are different to the pre-98 boxes and cant be used. Our 1-2 sets are a straight fit , but same as the pre-98 sets we now convert 3rd to a single synchro and it must use a 4th gear synchro ring of post '98 type.

Try to let us know what year model your gearbox is and we can supply the right part 1st time with everything you need to fit the set straight into the casing without modifications.

Straight Cut Gearset

The Straight Cut gear design incorporating our custom distinctive tooth profile provides even more strength than our already ultra reliable helically cut gearsets. One of our more popular items ... the Subaru WRX straight cut set can be found in vehicles with over 600hp. A far cry from the standard power output from factory and certainly a power level that needs a gear box of phenomenal strength to get power to the ground without failure. Straight cut gearsets are relatively noisy in operation and have an inherent whine to them. This is due to the meshing of the teeth when the gears are rotating. The meshing of straight cut teeth gives total contact along the tooth at all times which gives the straight cut tooth its added strength over the helically cut tooth . See the Image below of a 600+HP Subaru WRX Straight Cut "Dog Box"

Helically Cut Gearset.

Custom helically cut gearsets are our most popular product. Mainly used to transmit extreme power to the road in highly modified street cars. They are usually purchased by those wanting less gear noise than a Straight Cut gearset. Our Helical sets do produce slightly more gear noise than a standard factory gearset as a result of a purely motor sport based gear design which makes necessary compromises in regards to gear noise, to achieve uncompromising strength.


Synchromesh Engagement (Synchro ‘box)

Custom Synchromesh Gearsets enable factory style gear selection to be incorporated into your Helical or Straight Cut Gearbox. The Synchro’ Box is mainly used for street applications. We make the Synchromesh rings and hubs considerably stronger than factory components and incorporate our high quality materials and heat treating processes into the finished product ensuring durability you can rely upon for years to come.


Dog Engagement (Dog ‘box)

Essentially a “race only” style of gear engagement, this has become more and more popular for highly modified street cars. Dog Engagement gear selection is available on either Helical or Straight cut Custom Gearsets for a variety of applications. And a combination of Dog and Synchro’ is available on our Subaru sets. Providing fast, positive gear selection, with or without the use of clutch. The Custom Dog Engagement gear sets are undoubtedly the strongest and most “user friendly” on the market. However it should be pointed out that Dog Engagement Gearsets require fast, firm gear selection and are quite noisy on each gear change.

IMPORTANT NOTE: Please review our terms and conditions page for full details. By purchasing items listed on this website or through special order, via our order form, email, telephone or fax, buyer understands and agrees to all of the Terms and Conditions of this website. All Warranty Claims are the Responsibility of the Customer / Buyer to pursue directly with the manufacturer of the product, not Xcceleration.com llc. Xcceleration.com llc will not be held responsible for any legal problems resulting from any performance related item sold through this website. Purchase and receipt of performance enhancing items acknowledges that you the customer assume all liability and risk out of the use of high performance products. All modification components, except those that are exempt, have been designed and are intended for off-highway application. These components are for racing vehicles only, which may never be used on public roads and highways. Federal and many state laws prohibit the removal, modification, or rendering inoperable of any device or element of design affecting vehicle emission or safety in a vehicle used on public highways. Violation of such laws may subject the owner or user to a fine or penalty. Installation of this part may void the warranty coverage, if any, on your vehicle. Vehicles modified by the use of performance parts may no longer be lawfully used on public highways. User assumes all cost and risks associated with these items.

 

PICTURE OF 1-4 GEAR SETUP
 



Home | WRX/STi/XT/GT/Baja Turbo | Impreza 2.5 | Legacy/Forester/Baja | Specials | Gallery | Contact Us | Order Form