The T45 Source is building 3650 transmissions. Visit the new website:

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We take care of our customers because it's the right thing to do. Rest easy knowing that you've chosen The T45 Source.


T45 transmissions that work... and keep working! We accomplish unparalleled reliability with the T45 transmission.

T45 Transmissions That Work... AND KEEP WORKING

The T45 Source's techniques for making the T45 transmission last have been proven throughout several NMRA seasons as Zak Harty campaigned his 1997 Cobra in the Modular Muscle class.

The car is equipped with The T45 Source's race prepped T45 and has gone a best of 11.46@117. Remarkably the transmission made it through the entire 2009 season without being taken out of the car.

No one has more race experience with T45 transmissions than The T45 Source. Tap into the knowledge and experience of The T45 Source by building a reliable street or street/strip transmission.