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Updated by Kea Jones on Oct 24, 2017
Kea Jones Kea Jones
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Mopar Transmissions

We offer a complete line of Mopar performance and racing transmissions. Our product line includes NAG-1 transmissions, 5-45RFE transmissions, and Torqueflite 727 transmissions.


Mopar NAG1 Transmissions

Gearstar offers custom engineered, hand-built Mopar NAG1 transmissions that can handle up to 1100 HP and 1100 ft-lbs of torque capacity.

Mopar 545RFE Performance Transmissions

Get a custom built Mopar 545RFE performance transmission capable of supporting 475 HP and up to 450 ft-lbs of torque. Custom stalled torque converter included.

Mopar Torqueflite 727 Performance Transmissions

In the market for a custom, hand-built 727 Performance Transmission? Shop GearStar today for your premium high performance transmission needs.