Early Bronco AX15 5-speed Manual Transmission Kit with New Transmission SKU: 7225NET

Early Bronco AX15 5-speed Manual Transmission Swap

This 66-77 Ford Bronco AX15 install kit includes a new Aisin AX15 5-speed transmission.

The Aisin AX15 5-speed manual transmission is a top-shifting, overdrive transmission with the shifter located in the rear section of the transmission. The transmission is able to handle the torque and horsepower of most V8's. This conversion requires zero driveshaft modifications. All of this makes it the perfect choice for swapping into your early Bronco. At WILD HORSES we use only brand new AX15 transmissions in our conversion kits, never rebuilt.

• Modern 5-Speed Upgrade – Replaces stock 3-speed with a smooth-shifting AX15 for better drivability on and off-road.

• Overdrive Gear – Fifth gear provides lower RPMs at highway speeds, reducing engine strain and improving fuel efficiency.

• Proven Strength – Built to handle the torque of a V8-powered Early Bronco while still offering precise, reliable shifting.

• Complete Conversion Kit – Includes transmission, adapters, and required components for a simple Early Bronco swap.

Upgrade your 1966-77 Ford Bronco with the proven AX15 5-speed Manual Transmission—smoother shifting, highway overdrive, and the strength you need for V8 power.

Important Installation Notes:

• J-Shift Dana 20 Requires Twin Stick Shifter Add-On: Available in this kit is our stainless steel twin stick transfer case shifter. The stock J-shift transfer case shifter is not compatible with the AX15 transmission and will require this upgrade.

• Recommended Clutch Upgrade: We offer an upgraded Centerforce II clutch kit which includes a new clutch pressure plate, throwout bearing and pressure plate bolts. Unless you have recently upgraded the clutch in your Bronco, we highly recommend adding this clutch kit to your AX15 5-speed early Bronco conversion kit. There is no sense in upgrading to a new manual 5-speed transmission and leaving in an old, chattering clutch to use with it.

• Requires 11-inch Flywheel: If your Bronco has a 10" clutch and flywheel setup (a rarity in early Broncos), you will need to upgrade to an 11" flywheel and add the clutch kit option to your order.

• 1-inch Body Lift Highly Recommended: Like most transmission conversions a 1" body lift will allow for a much easier installation.

• Gear Oil Recommendation: Factory owner manuals call for 75W90 GL-3 or GL-4 Synthetic gear oil for the AX15 manual transmission.