TL-TRX300 TORQ Locker for Early Honda ATV's

9 × 3 × 2 in
3 lb
TORQ Locker
Vehicle Type: 


  • HONDA 300 4x4 (90-00) & 1988
  • HONDA 400 4x4 (95-01)
  • HONDA 450 4x4 (98-01)
  • YAMAHA 350 WOLVERINE (95-96)
  • KAWASAKI 300 PRAIRIE (97-02)
  • KAWASAKI 400 PRAIRIE (97-02)
  • YAMAHA 350 WOLVERINE (99-01)
  • YAMAHA 350 BIG BEAR (99)
  • YAMAHA 400 BIG BEAR (00-01)
  • (See Below for OEM Part Number Cross Reference)

The TORQ Locker is the most advanced, strongest, highest quality automatic locking differential on the planet, proven in the most extreme vehicles from hard-core Rock Crawling, racing the King of the Hammers, Rock Bouncing, Sand Dunes and Mud Drags. To back this all up, Torq-Masters Industries offers an unprecedented 4 year warranty on the TORQ Locker with no tire size, horsepower limits or loopholes, double the warranty of any other automatic locker on the market. Torq-Masters Industries is committed to building the highest quality locking differentials possible. To be the best, we build with the best, TORQ Locker is 100 percent Made in the USA with 100 percent USA raw materials.
Keep it Simple, no air-lines to leak, compressors to fail, cables to adjust or electrical gremlins, the TORQ Locker gives you piece of mind as a reliable, mechanical, automatic locker that can handle any terrain. The TORQ Locker design eliminates and integrates pesky locker components seen in all other automatic drop-in lockers. The spacers are gone and the dowel pins are now machined into the Cam Gears to form key-ways. The innovative design features of the TORQ Locker have three game-changing benefits;

  • No dowel pins to install or fail. The Key-Way design of the Cam gears can't shear, ever.
  • Easiest Locker on the market to install, no spacers, no dowel pins, no measurements.
  • Best On-Road manners of any automatic locker; the Key-Way design is more forgiving than the rigid dowel pin design. The Key-Way allows for smoother locker engagement. By eliminating the spacers they eliminated the leading cause of the some people experience with automatic lockers.

To build the TORQ Locker, Torq-Masters Industries demands the highest quality control standards, protocol and materials. The TORQ Locker is CNC Machined from USA made 9310 steel alloy for maximum durability and long life using their proprietary manufacturing processes in an ISO 9001 certified facility in Rochester NY. Locker components are then heat treated with proprietary procedures in a TS16949 certified facility with 100 percent quality audits utilizing electron microscopy testing. Quality control of this caliber very rare in the Aftermarket Off-Road Industry, but Torq-Masters goes the extra mile to build the best, because you deserve the best.
Torq-Masters team of engineers make every effort to ensure that the model fitment listed is accurate. However, due to vehicle manufacturers differential options, using available inventory, prior vehicle owner modifications, etc. it is the customers responsibility to confirm that the model TORQ Locker they order fits their differential. All TORQ Lockers are designed for installation in an open differential.


Frequently Asked Questions



Q: Do I use Thrust Washers in this install?

A: YES - Please refer to the installation manual supliment for which Thrust Washers to Keep and reuse, and which clutch plates to discard.


Q: Do I have to make any measurements?

A: Yes using a dial caliper or feeler gugages - see the install manual for more info.


Q: When in 2WD what affect does the locker have? Is there any difference from stock in simply having the locker installed when in 2WD?

A: There should be no perceivable difference than stock in 2WD with a front TORQ Locker installed


Q: The cutout for the cross pin in the Cam Gear looks loose.

A: That’s correct, this is by design. For the Locker to operate correctly, the Cam Gear must corkscrew about the cross pin, this drives the gears into the locked position.


Q: I can move one tire/ or the driveshaft, back and forth a quarter of a turn before the locker engages.

A: This is normal locker operation. The TORQ Locker™ adds backlash to the drivetrain.


Q: Does the TORQ Locker™ ever disengage?

A: in 2WD the TORQ Locker™ is not locked and will ratchet freely.  The TORQ Locker™ will allow for wheel spin differentiation so you can turn and steer the vehicle in 4WD. The Locker achieves wheel speed differentiation through ratcheting. A slight audible click maybe noticeable at low speeds, this is an indication of the locker ratcheting.


Q: Where is the TORQ Locker™ made?

A: The TORQ Locker™ is made 100% in the USA from USA made raw materials. Our manufacturing facility is in Rochester NY.


Q: What is the Warranty on the TORQ Locker™?

A: The TORQ Locker™ has a 4 year warranty with no tire size or horsepower limitations. The warranty does not cover damage to the locker from driveline component failures such as broken axle shafts or other differential failures.


Q: Do I need any special Gear Oil?

A: No, you can use your manufacturer’s recommended gear oil.


Q: What OEM Part Numbers will the TORQ Locker TL-TRX300 replace?


  • Honda Part numbers:
  • 41400-HM7-A00
  • 41400-HM7-000
  • 41400-HM7-610
  • 41400-HC5-000
  • 41400-HC5-010
  • 41400-HC5-020
  • 41400-HC5-750
  • 41400-HC5-751
  • 41400-HC5-770
  • Yamaha Part numbers:
  • 4KB-46470-00-00
  • 4KB-46470-11-00


  • Kawasaki Part Numbers:
  • 13101-1239
  • 13101-1239


1998 - 1998 Honda TRX 300 Front Differential
1990 - 2000 Honda TRX 300 Front Differential
1995 - 2001 Honda TRX 400 Front Differential
1998 - 2001 Honda TRX 450 Front Differential
1995 - 1996 Yamaha 350 WOLVERINE
1997 - 2002 KAWASAKI 300 PRAIRIE
1997 - 2002 KAWASAKI 400 PRAIRIE
1999 - 2001 Yamaha 350 WOLVERINE
1999 - 1999 Yamaha 350 BIG BEAR
2000 - 2001 Yamaha 400 BIG BEAR