What’s under the case
Built around a few specific decisions that matter in a racing application.
Gun-drilled main shaft
Gun-drilling the main shaft reduces rotating weight without sacrificing strength. Less rotating mass means the drivetrain responds faster — you feel it off the corner.
Modular cluster design
The gear cluster is serviceable. If you need to swap ratios between race weekends, you’re not sending the whole unit out. That matters when your next race is seven days away.
27 or 32 spline output
Two output spline options so the transmission matches your existing hub and driveshaft setup. Choose the configuration that fits your build — no need to change what already works.
Most 2-speeds give you four or five first-gear options and call it a day. That works if you run one track all season. Most racers don’t. The right ratio for this weekend’s track — and the one after it — without pulling the transmission.
How to pick your ratio
A few questions to work through before you call us.
Not sure where to start? That’s what we’re here for.
AutoGear gearbox lineup
Where the 2-Speed fits alongside our Muncie-style four-speeds.
| Model | Best for | Details |
|---|---|---|
| Muncie M20 | Street cruising & lighter loads | Wide ratio, easiest to drive |
| Muncie M22 | Musclecars & resto builds | Straight-cut Rock Crusher heritage |
| Muncie M23 | Track, street & torque builds | Modern materials in a classic case |
| AutoGear 2-Speed | Dedicated 2-speed racing classes | Modular, gun-drilled, ratio-tunable |
2-Speed FAQ
Common questions from racers spec'ing a build.
How many ratios can I run in the AutoGear 2-Speed?
The 2-Speed is available in 15 ratio configurations — built so you can match the right setup to each track without pulling the transmission. Submit an EZ-Spec and we'll help you choose.
What output spline options are available?
27- or 32-spline output, so the transmission matches your existing hub and driveshaft setup.
Can I swap ratios between race weekends?
Yes. The cluster is modular and serviceable, so you can adjust your setup without sending the whole unit out or rebuilding it.
What's the benefit of a gun-drilled main shaft?
Gun-drilling reduces rotating weight without sacrificing strength. Less rotating mass means the drivetrain responds faster off the corner.
How do I choose the right first gear ratio?
It depends on the tracks you run and your rear axle ratio. Longer, faster tracks generally want a tighter first gear; shorter bullrings want more separation. Submit an EZ-Spec or call us and we'll work through it with you.
Spec’ing a build for this season?
Talk through your ratio options before you commit. We’ll help you match the 2-Speed to your class and your tracks.
Submit an EZ-Spec
Contact us
Call (315) 471-8141 or visit AutoGearSYR.com