Jerico 4 Speed Revision 4.2 Transmission. The Revision 4.2 Includes all of the Benefits of the Revision 4 Plus: Ball Bearing Mid-Center Support (for increased strength and gear deflection) CNC Billet Shifting Forks CNC Billet Top Cover. Dog Rings and Sliders for Quick and Easy Shifting. Webbed Dog Rings. The Muncie transmission began replacing the Borg-Warner 4-speed transmission on Wednesday, February 6, 1963, when the first Muncie 4 speed transmissions were shipped to the Baltimore Final Assembly Plant for installation into Chevrolet passenger cars.
Used Chevy 4 Speed Transmission
AHP 4 Speed Transmission Kit
This radical, 4 speed transmission shift pattern is 1 down, 3 up with hardened gears and shift forks.
The kit is made for those of you wanting to upgrade your stock Honda motors from a 3 speed, to a 4 speed.
It will work with both stock style, semi-auto AND manual clutch kits.
(fits into your OEM Honda cases or your import motor with crank mounted clutch)
Recommended for engine builds starting at 50cc on up to 117cc.
Fits in: The Z50, XR and CRF50, XR and CRF70, CT and SL70 and ATC and TRX70
Kit comes complete (ready to pop in) with:
-Main shaft and gears
-Counter shaft and gears
-15 tooth front large spline Z50 style sprocket
-Shift drum and hardened shift forks
Arrives assembled for you!
Primary reduction ratio: 3.722
Gear Ratio:
AHP OEM Honda
1 - 3.182 1 - 3.272
2 - 1.706 2 - 1.706
3 - 1.238 3 - 1.238
4 - 0.917 4 - You wish! :)
Quick note: 50 Primary gear count 17/69 or 70 18/67
For reference, check out the Youtube Video of case splitting to install transmission: http://www.youtube.com/watch?v=63skpwY-yTY
Please note: We have put this in many 50's and 70's we have seen in some 70's that you need a 50 kickstart gear (the gear that engages the transmission to start the bike) The 70 gear is a different tooth count than some of the older SL,ST,CT or CL 70's. Please call with any questions.
This radical, 4 speed transmission shift pattern is 1 down, 3 up with hardened gears and shift forks.
The kit is made for those of you wanting to upgrade your stock Honda motors from a 3 speed, to a 4 speed.
It will work with both stock style, semi-auto AND manual clutch kits.
(fits into your OEM Honda cases or your import motor with crank mounted clutch)
Recommended for engine builds starting at 50cc on up to 117cc.
Fits in: The Z50, XR and CRF50, XR and CRF70, CT and SL70 and ATC and TRX70
Kit comes complete (ready to pop in) with:
-Main shaft and gears
-Counter shaft and gears
-15 tooth front large spline Z50 style sprocket
-Shift drum and hardened shift forks
Arrives assembled for you!
Primary reduction ratio: 3.722
Gear Ratio:
AHP OEM Honda
1 - 3.182 1 - 3.272
2 - 1.706 2 - 1.706
3 - 1.238 3 - 1.238
4 - 0.917 4 - You wish! :)
Quick note: 50 Primary gear count 17/69 or 70 18/67
For reference, check out the Youtube Video of case splitting to install transmission: http://www.youtube.com/watch?v=63skpwY-yTY
Please note: We have put this in many 50's and 70's we have seen in some 70's that you need a 50 kickstart gear (the gear that engages the transmission to start the bike) The 70 gear is a different tooth count than some of the older SL,ST,CT or CL 70's. Please call with any questions.