Import. The Super Nut has a strong reputation stretching several decades. The added benefit? This mainshaft nut, with built-in replaceable seal, will help you keep the transmission oil where it belongs... Inside. Note: Due to the added height it may interfere with some mainshaft support or inner primary cases. Note: See 518760 for James replacement seal & 517165 for replacement lock tab washer.
Fits: > 36-86 4-speed B.T.(NU)
Inner race only of mainshaft support bearing in backside of inner primary cover. OEM replacement reference 34091-85, 34091-85A. Note: See JIMS 978349 for install/remove tool.
Fits: > 85-06 5-speed B.T. (excl. 6-speed 2006 Dyna) (NU)
Ultima® 6-Speed Builders Kit
Description
The Ultima Six Speed Builders kit was designed to provide a simple,low cost, 6 speed overdrive solution for 1990/L Big twin owners.These kits work in most 1990-1999 models with little or no modification. A speedometer recalibration unit is required on some 1996-2000 and all 2001 later models. These kits will work in 5 spd type 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. Complete instructions included.
Roller Detent for smoother shifting
Precision Ground 8620 Gears and shafts
Chrome Plated Billet Trap Door
Gear Ratios are:
1. 2.94: 1
2. 2.21: 1
3. 1.57: 1
4. 1.23: 1
5. 1: 1
6. 0.86: 1