PetroWorks - Offroad Products Inc. -  Specializing in Suzuki Samurai, Sidekick & GEO Tracker OEM Parts
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Transfer Case


G.R.S. 2 Rebuilt Transfer Case

The G.R.S. II rebuilt transfer case for the Samurai has a low-range gear ratio of 4.89:1. This makes it 115% lower than stock in low-range and 18% lower than stock in high-range. With stock ring & pinion gears (3.72:1), the G.R.S. II gives you a final drive ratio of 66:1. With 5.62:1 ring & pinion gears, you can have a final drive ratio of 100:1! Petroworks G.R.S. transfer cases are built with a "split H" shift-pattern, allowing for both 2WD and 4WD low-range. Advise us of the year of your vehicle and we will put the proper size flanges on your rebuilt transfer case!

Brand New, ONE PIECE GEARS. No longer welded, even quieter than before! Made in Japan

Complete GRS II $1040.00 plus a $250 Core for your old reusable case


SKU: Type: Price: Shipping Weight:  
GRS8300 G.R.S. II - Deluxe Kit Includes gears, and complete rebuild kit (bearings, counter shaft, thrust washers, seals, and gaskets). $675 16 lbs
GRS8200 G.R.S. II - Standard Kit Includes gears, countershaft & “O” ring, thrust washers, and gaskets. $550 12 lbs
GRS8100 G.R.S. II - Basic Kit Gears Only. $495 10 lbs Call for Application Assistance.

Transfer Case Rebuild Kit

We can supply a complete kit which includes new bearings, new gaskets, roller bearings, flange nuts, a complete set of all necessary shims to rebuild your t-case (stock or GRS). It also includes an exploded diagram to illustrate how to put it together!

SKU: GRS-8500
Price: $179.95
Shipping Weight: 7 lbs.
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Split "H" Pattern Shift Fork Mod

The Petroworks Split "H" Pattern Shift fork is a absolute must for a low gear transfer case. This "H" pattern gives you a the ability to drive in 2WD Low, but easily allows for switching to 4LO or 4HI.

SKU: GRS-5320
Price: $40.00 plus a $75.00 Core
Shipping Weight: 1 lbs.
  Built to order. Please call.

Polyurethane Shift Sheet

Just like the stock part (our part no. GRS-2250) except that this part is made from polyurethane.

SKU: GRS-2251
Price: $14.95
Shipping Weight: 1 lbs.
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Polyurethane Shift Bushing Kit

Do a complete tune-up on your shift levers so that you will not be stuck when you need them most. Includes “sloppy shifter fix”, polyurethane transmission bushing and Polyurethane T-Case sheet.

SKU: PWP6000
Price: $29.95
Shipping Weight: 1 lbs.
  Online Store

"Strengthened" Transfercase Arms

Our "Strengthened" Transfer Case Arms will help resist the tendency of the stock transfer case arms from bending, a common problem. The "Strengthened" Transfer case Arms come in both the long and short arms. Specify product when ordering.

SKU: Type: Price: Shipping Weight:  
CHS3008 Long arm w/exchange $34.95 5 lbs. Call for Availability!
CHS3009 Short arm w/exchange $29.95 5 lbs. Call for Availability!

Spidertrax HD T-Case Arms – Samurai

For added strength upgrade to a set of Spidertrax HD T-Case Arms. We feel that this is the best kit on the Market for weak Suzuki T-Case arms. The Spidertrax HD T-Case Arms replace both factory arms with a superior indestructible box construction design. They work with the original OEM rubber mounts, This kit comes with both arms and all hardware needed for the install. The arms are powder coated silver for superior corrosion resistance. The Spidertrax HD T-Case Arms are guaranteed to be the best t-case mounting system on the market.

  Call for Availability!