THE ULTIMATE, OR NOTHING.

Heart pounding performance. 100+ years combined experience.
Welcome to the new Gearstar Performance.

 

TRUSTED BY THE BEST.

Strap yourself in. Gearstar's precision, unrivaled
craftsmanship takes your ride to the max level.

 

LEGENDS NEVER DIE.

Strap yourself in. Gearstar's precision, unrivaled
craftsmanship takes your ride to the max level.

POWER. DRIVEN. PROVEN.

Official transmission of the Summit Autocross Race Team

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Ford Transmission
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Mopar Transmission
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Converters

HIGH PERFORMANCE AUTOMATIC TRANSMISSIONS & CONVERTERS, CUSTOM-BUILT AND OPTIMIZED WITH PRECISION

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ONE TRANSMISSION, ONE BUILDER, FROM START TO FINISH

Each and every transmission is custom built by one master technician.

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DYNO TESTING

Every transmission and converter are dyno tested for the equivalent of 100 miles, to ensure they are operating perfectly before leaving our shop.

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INDUSTRY LEADER

All Gearstar transmissions and converters are built to the highest industry standards, using the highest quality US-made parts and components.

GEARSTAR VIDEOS

Welcome to Gearstar—Your #1 source for high-performance automatic transmissions and torque converters!

ENGINEERED TO PERFORM & HAND-BUILT IN THE USA

We sell automatic transmissions, custom-built and optimized with precision by master technicians, who are dedicated to engineering and building the finest. Whether you are looking for transmissions for Ford, GM, or Mopar, we have you covered! Transmissions that we feature are built as per the horsepower, torque, and rear gear ratio specs of the engine it is made for.

Transmissions
We have high-performance transmissions available for:
Ford – AOD (Level 2, 3 and 4), AODE (Level 2, 3 and 4), C4 (Level 2, 3 and 4), C6 (Level 4), E4OD (Level 3), 4R70W (Level 2, 3 and 4) transmissions.

GM - Turbo TH350 (Level 2, 3 and 4), Turbo 400 TH400 (Levels 2, 3 and 4), 700-R4 (Level 1, 2, 3 and 4), 200-4R (Level 2, 3 and 4), 4L60E (Level 2, 3 and 4), 4L65E (Level 2, 3, 4), 4L65E C5C6 (Level 4), 4L70E (Level 4), 4L70E (Level 4), 4L80E (Level 2, 3 and 4), 4L85E (Level 4).

Mopar – NAG 1, 545RFE, TorqueFlite Chrysler 727 (Level 2 and 4)

Converters
We have torque converters available for:
GM Turbo TH200-R, 4L60E, 4L65E, 4L70E, 4L80E, 4L85E, 700-R4; Ford 4R70 W, 4R75W, AODE; Chrysler 545RFE; CH350/400; Mopar NAG-1, and more. Don’t forget to check out our YANK LT Power Adder, Pro Truck, Pro Thruster (PT), SS Series, and ZL1-2800 converters!

How Gearstar is Different
What makes Gearstar different from other transmission builders is our dedication to offer you the highest quality product. We strive to offer nothing but the best to our customers, which is why, when it comes to high-performance automatic transmission rebuild kits and converters, racers and car owners show their trust in us! Each high-performance transmission/converter offered by Geastar is built by “one technician” from start to the finish. Before the products reach you, they are dyno-tested for the equivalent of 100 miles to ensure that they offer the best performance metrics.

Our Transmissions Are Warranted!
All our performance transmissions, remanufactured transmissions are warranted against failure—due to workmanship and/or parts used in the remanufacturing process—for 3 years or 36,000 miles, whichever comes first from the date of shipment.

In a world where true quality is increasingly rare, Gearstar Performance Transmissison stands for the promise that there are still those devoted to the craft of well-made things.

Buy it once, Get Gearstar.

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