The Ultimate, Or Nothing.
Heart pounding performance. 20+ years and counting. Welcome to the new Gearstar Performance.
Legends Never Die.
Strap yourself in. Gearstar's precision, unrivaled craftsmanship takes your ride to the max level.
World-Class High Performance Automatic Transmissions
Roadkill Gearstar 4L80E Install Stubby Bob
Finnegan And Freiburger
Gearstar Performance Transmission 4L60E
4L80E SS Chevelle
Hot Rod Garage SS Chevelle
Performance Transmission 4L60E Installation
4L60E El Camino
Hot Rod Garage Ep. 21
Hot Rod Garage - El Camino
NAG1 on the DYNO
727 Trans on Dyno
V6 Challenger World Record
Hand-built In the USA. Engineered To Perform.
If you're like many gearheads, you've put a lot of love into your ride. It's not just a hobby, this thing is your baby. We know how you feel, and Gearstar takes the same level of care with your high performance transmission as you have with the rest of your car or truck, which is one reason that over 50% of our business comes from referrals and repeat customers.
Each Gearstar high performance transmission such as nag1 transmission, 700r4 transmission, 4r70w transmission, 4l80e transmission and many more are built to your exact specifications from start to finish by one of the industry's top expert technicians using only the best US made performance parts available.
Why choose Gearstar Performance Transmissions?
- Handmade with loving (and power-hungry) hands
- Each transmission is built by one master technician from the projects start to finish
- Performance automatic transmissions built using the industries best performance parts made in the USA
- Each and every transmission is dyno tested the equivalent of 100 miles to insure that it is in perfect operating condition before it leaves our facility
- Turbo 350 Transmissions
- Turbo 400 Transmissions
- GM 700R4 Transmissions
- GM 2004R Transmissions
- GM 4L60E Transmissions
- GM 4L65E Transmissions
- GM 4L70E Transmissions
- GM 4L80E Transmissions
- GM 4L85E Transmissions
- Performance AOD Transmissions
- C4 Performance Racing Transmissions
- Ford 4R70W Transmissions
- AODE Performance Transmissions
- Performance C6 Transmissions
- E4OD Performance Transmissions