AHP 4 Speed Transmission Kit - 1 Down 3 Up
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The AHP 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 3-Speed to 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 anywhere from 50cc all the way up to 117cc plus
Fits in:
-Z50
-XR50
-CRF50
-XR70
-CRF70
-CT70
-SL70
-ATC70
-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 ready to pull your OEM transmission and pop this in!
Primary reduction ratio: 3.722
Gear Ratios:
-AHP -OEM Honda
-1 - 3.182 -1 - 3.272
-2 - 1.706 -2 - 1.706
-3 - 1.238 -3 - 1.238
-4 - 0.917
Quick note: 50's have the Primary gear count 17/69 and 70's have 18/67
When using with 6V points ignition CT and Z50 engines you may need
OEM HONDA Kickstart shaft gear 28211-GEL-A80
and
OEM HONDA Kickstart shaft 28251-GEL-A80
For Support please contact ahpminis@gmail.com or mark@ahpminis.com directly