Shifter base for AX15 swap from Jeep or Dodge Dakota
*** File photo - base NOT as pictured - read item description!!! ***
Shifter base for custom conversions using Aisin AX15 5 speed manual transmissions sourced from:
- 1989-1995 Jeep Wrangler YJ w/ 4.0L I6
- 1997-1999 Jeep Wrangler TJ w/ 4.0L I6
- 1989-1999 Jeep Cherokee XJ w/ 4.0L I6
- 1989-1992 Jeep Comanche MJ w/ 4.0L I6
- 1992-1999 Dodge Dakota w/ 3.9L V6
- 1993-1998 Dodge Dakota w/ 2.5L I4
- NOT FOR USE in these vehicles - complete kit required
- NOT compatible with stock shifter sticks
- 1989 models: confirm trans (mid-year change from BA-10/5 to AX15)
- Does NOT FIT older or newer models, or other engines during the stated years (different trans)
A Hurst stick is required (NOT included, sold separately). Other brands and homemade sticks are discouraged. Stick mount has 3/8"-24 threaded holes spaced 7/8" apart on center + mating serrations for a Hurst stick on one face. Due to larger mounting threads (3/8"-24), sticks that use 8mm mounting bolts (most OE, "non-TKO" Lokar, others) will not work. Lokar TKO sticks can be mounted but only to the smooth side of the stub. To select the proper parts:
- Wait until new transmission is installed to buy shifter parts
- Remove existing shifter base if present
- Sit in vehicle, in driving position, with all interior trim (dash, console, etc) in place
- Define desired knob location in space (neutral position):
- Measure height from base flange to desired knob location = overall height
- Measure side & rear offsets from receptacle bore to desired knob location
- See this diagram for clarification
- Study the Hurst stick page for shapes that meet your needs
- Allow 3-6" for stick mount height
- Choose a stick and see what fulcrum heights are compatible with it (see chart)
- Check overall height (see chart: stick height + mount height = overall height)
- Confirm chosen combination achieves desired knob location and that fulcrum height works with stick length selected
- Consider various stick & stub combinations to optimize
Stub fulcrum height options (critical to optimizing leverage for short throw):
| Option | For stick length | stick mount height | stick mount angle | boot type |
|---|---|---|---|---|
| A | 8" | 3.5 | vertical | OE (short) |
| B | 10"+ | 4.0 | vertical | OE (short) |
| C | 10"+ | 5.0 | vertical | OE (short) |
- All Core Shifters kits for AX15 use option C
- Stick length = point-to-point distance from mount hole to knob thread
- Stick mount height = distance from base flange to stick bolt hole (affects knob height)
- Fulcrum height = distance from lower ball to fulcrum pin; varies by option, not published
- Warning: Follow stick length guide to avoid excess effort & component failure
The base is built by Core Shifters using proven Hurst Billet Plus components inside a custom housing. This kit has many superior features & components, integrated into a unique, exclusive assembly:
- Billet steel gear selector stub
- Hardened steel cross-pin & MDS-filled nylon fulcrum pivot ring
- Self-centering cross-gate bias springs with heat treated spring seats
- CNC-machined aluminum housing with steel wear clips
- Zinc-plated laser-cut steel base-plate & cover
- Rubber dust cover boot