Powertrain components

4 products

Rear End Parts

8 products

Transmission Components

FAQs

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Start with what you’re running for an engine and how the chassis is put together. Dirt cars, asphalt cars, drag setups, and road race builds all load the drivetrain differently. Once you know the torque curve and the angle the driveline has to work through, it’s easier to sort out which race transmission and supporting parts make sense. If anything feels unclear, we can look at your combo and confirm what fits.

The big things are strength and how well the parts stay lined up under power. If a transmission fights you on the shift or starts flexing, it won’t last. On big-power stuff, tiny machining issues show up fast, so the parts need to be built right from the start.

Manual race transmissions give you direct control and simple mechanics. Automatic race transmissions are built for quick, steady shifts under load. Road race transmissions are a different deal — they’re made to survive long runs, heat, and tighter gear spacing. Pick based on how you drive, your power level, and whatever your class rules allow.

The drivetrain affects everything from throttle response to chassis balance. A properly aligned and rigid drivetrain keeps power delivery smooth, reduces vibration, and prevents binding that can upset suspension movement under acceleration.

Yes. Dirt setups often rely on broader torque bands and driveline angles that handle constant movement, while asphalt demands tighter tolerances, stable gearing, and consistent temperature control over longer runs.

Each unit goes through alignment inspection, load testing, and heat-cycle evaluation. Gearsets and housings must stay stable under torque and repeated shock loads, and components are checked for clean engagement and long-term wear resistance before earning a place in our lineup.

Yes. Whether you’re updating a proven chassis, converting between manual and automatic, or building a new race car transmission from the ground up, our team can help with gear ratios, compatibility, and dependable drivetrain combinations.

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At Earnhardt Technologies Group, racing is in our DNA. Every component is precision-machined in Mooresville, NC, built to endure the toughest conditions on the track.

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