Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /home/mjaloudi/mzmperformance.com/vsadmin/inc/incfunctions.php on line 417

Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /home/mjaloudi/mzmperformance.com/vsadmin/inc/incfunctions.php on line 417

Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /home/mjaloudi/mzmperformance.com/vsadmin/inc/incproddetail.php on line 9

Deprecated: strpos(): Passing null to parameter #1 ($haystack) of type string is deprecated in /home/mjaloudi/mzmperformance.com/vsadmin/inc/incproddetail.php on line 28

Deprecated: strpos(): Passing null to parameter #1 ($haystack) of type string is deprecated in /home/mjaloudi/mzmperformance.com/vsadmin/inc/incproddetail.php on line 28

Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /home/mjaloudi/mzmperformance.com/vsadmin/inc/incproddetail.php on line 777

Home » Subaru WRX/STI » Drivetrain & Components » Gear Sets

 
APS High Torque Gearbox Internal Gearset
Although the stock 5 speed gearbox is widely recognized as the ?weak link? of the Subaru WRX/pre 00 STI, not many people understand why.

The gearbox has been unchanged in its basic torque capacity design parameters, since its utilisation in normally aspirated 1.8 litre (110 ft/lb) Liberty?s in the mid 1980?s!!

Small wonder then, that with the factory now transmitting 225 ft/lbs through it from the stock WRX engine, any more than approximately 250 ft/lbs (approximately 16 psi boost on an internally stock long engine) can lead to premature gearbox failure.



APS High Torque Gearset assembled into gearbox shown above

APS?s increased torque capacity gearset fundamentally alters the design of the geartrain with a number of objectives.

  • Full synchromesh action retained for maximum streetability
  • Helical tooth gear design for maximum durability
  • Maximum increase in torque capacity, within the physical dimensions of the standard gear box housing.


The torque capacity improvement is achieved through retention of the stock ratios, coupled with a reduction in the number of teeth per gear, increase in gear width and improvement in gear material.

 
 
Price: $4,395.00
Out of Stock

 
« Previous | Next »


Copyright © 1998-2020 MZM International Inc.- All Rights Reserved.
All Trademarks & Logos are property of their respective owners

Warning: Undefined variable $urls in /home/mjaloudi/mzmperformance.com/vsadmin/inc/incparselinksv2.php on line 26

Fatal error: Uncaught TypeError: sizeof(): Argument #1 ($value) must be of type Countable|array, null given in /home/mjaloudi/mzmperformance.com/vsadmin/inc/incparselinksv2.php:26 Stack trace: #0 /home/mjaloudi/mzmperformance.com/proddetail.php(174): include() #1 {main} thrown in /home/mjaloudi/mzmperformance.com/vsadmin/inc/incparselinksv2.php on line 26