Performance / Race Transmissions

RSG Tranzilla Muscle Car Magnums

Click HERE to see the old transmission page

TRANZILLA race carsThe Tremec Magnum is the state-of-the-art 6-speed manual transmission. They are original equipment in some of the world’s best Supercars such as the ZR1 Corvette and the ACR Viper — capable of handling 700 lb-ft. of torque, Tremec’s Magnums feature multiple shifter locations and both electronic and mechanical speedo pickups.

RSG converts these amazing transmissions into Tranzilla Muscle Car Magnums for today’s most popular muscle cars, pony cars, street machines, street rods and 4x4s. Features include:

  • Upgrade To 850 lb-ft. Torque Capacity
  • Magnum Shafts & Gears
  • Triple Cone Synchros
  • Carbon Fiber Synchros
  • Up To 6 Ratios Available — Any Overdrive Ratio Combination Possible
  • Options — REM Super Finishing for Reduced Heat & Friction
  • Pressurized Lubrication Is Also Available

Rockland Standard Gear can convert your standard T-56 to Tranzilla Magnum specs. Each gearbox is shimmed and match-fitted for flawless high rpm shifts and long-term durability.

Applications (Click any link to go to the product page):


Take Some Hot Laps with TRANZILLA!

Car video

Corvette ZF S6-40 —
Certified ZF Remanufacturer

Corvette pictureRockland Standard Gear (RSG) is a master distributor for ZF 5 and 6 speed manual transmissions for Ford Trucks. We also remanufacture the ZF S6-40 transmission found in the C4 Corvettes from 1989 to 1996. RSG remans these transmissions for ZF and GM and are the only source for these parts in North America. We can also repair or remanufacture your Corvette transmission if you wish to keep your part numbers intact for collector value. We stock complete new transmissions, remanufactured transmissions and a complete line of O.E. ZF parts.

RSG – Home of
Tranzilla® Magnum

The Ultimate 6-Speed
for Street or Track!

Chris Durbin award

Why You NEED A Tranzilla Magnum? While many dealers sell Tremec® Magnum transmissions, only RSG offers “Tranzilla” Magnums with the options, ratios and services that most shops cannot. Building a complex race transmission is akin to building an exotic race engine, exacting clearances, specialized components such as carbon fiber synchros and proper heat-treating plus years of experience cannot be underestimated in the finished product. RSG has built bulletproof transmissions for the top race teams for many years. Let us build one for you.


4x4 Close-Ratio 6-Speeds? Another huge RSG innovation is to offer Tranzilla for most popular 4x4 vehicles that were previously limited to balky HD truck transmissions,

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