The six speed builders kit was designed to provide a simple, low cost, 6 speed overdrive solution for 1990 & later Big Twin owners.
- This kit works in most 1990-99 models with little or no modification
- A speedometer recalibation kit is required on some 1996-2000 and all 2001 & later models
- This kit will work in all 2000 & later models with additional minor modifications
- The trap door is thicker than stock so any brackets used that are trap door mounted may need modification
- All touring and FLT/FLH models 1993 & later require an oil filler spacer kit
- This 6 speed gear set is the same one used in our transmissions and are great value products
- Roller detent for smoother shifting
- Precision ground 8620 gears and shafts
- Polished billet trap door
- 75-GS-6-57