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Description
6 gear transmission POWER HOUSE 6 SPEED TRANSMISSION CONVERSION BUILDERS KIT FOR HARLEY BIG TWIN 90-06POWER HOUSE 6 SPEED TRANSMISSION CONVERSION BUILDERS KIT FOR HARLEY BIG TWIN Part # 72731 IN STOCK & READY TO SHIP Fits 90 06 Big Twin models Instructions included w purchase & available online on the Ultima website The Ultima Six Speed Builders kit was designed to provide a simple, low cost, 6 speed overdrive solution for 1990 2006 Big twin owners. These kits work in most 1990 1999 models with little or no modification. A speedometer recalibration
POWER HOUSE 6 SPEED TRANSMISSION CONVERSION BUILDERS KIT FOR HARLEY BIG TWIN
Part # 72731
IN STOCK & READY TO SHIP
Fits 90-06 Big Twin models
Instructions included w/purchase & available online on the Ultima website
The Ultima Six Speed Builders kit was designed to provide a simple, low cost, 6 speed overdrive solution for 1990-2006 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. All Touring FLT and FLH Models 1993-Later require an oil filler spacer #89-14, sold separately.
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. All Touring FLT and FLH Models 1993-Later require an oil filler spacer #89-14, sold separately.
We strongly recommend that this kit be installed by a qualified technician with knowledge of the Harley Softail style transmissions.
Features:
Roller Detent for smoother shifting.
Steel shift forks.
Precision Ground 8620 Gears and shafts.
Chrome Plated Billet Trap Door.
Gear Ratios:
1st = 2.94:1
2nd = 2.21:1
3rd = 1.57:1
4th = 1.23:1
5th = 1:1
6th = 0.86:1
Features:
Roller Detent for smoother shifting.
Steel shift forks.
Precision Ground 8620 Gears and shafts.
Chrome Plated Billet Trap Door.
Gear Ratios:
1st = 2.94:1
2nd = 2.21:1
3rd = 1.57:1
4th = 1.23:1
5th = 1:1
6th = 0.86:1
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 19 reviews
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Product Reviews
★★★★★ 5
Excellent pillow, firm but more flexible than others of its type
Size: Queen Size: 27.6"L x 15.7"W soft, Color: White
I previously bought a similar pair of pillows from Sleep Innovations, but they are now either out of stock or unavailable. This new brand is a bit softer and more comfortable than the original pair. It's good for sleeping on my side or my back. The pillow cradles and supports the head and neck in a more contoured way than some harder pillows. The price is reasonable. The only difference from Sleep Innovations is that this pillow does not have a zip cover. So there is no way to wash the exterior. I suppose that one could buy a zip cover for it at extra cost.
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Reviewed in the United States on December 22, 2025
★★★★★ 5
Side sleepers rejoice!
Size: Queen Size: 27.6"L x 15.7"W soft, Color: White
I have spent hundreds of dollars on pillows. I am primarily a side sleeper and every few years I find myself waking up with a "crick" in my neck accompanied by pain and tension. I have had this pillow for only two nights and I am leaving a positive review. It is firmer than one would expect based on first appearance and the "press" test. The surface stays cool and I can sleep any which way and I am still comfortable. Definitely recommend!
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Reviewed in the United States on March 1, 2026
★★★★★ 4
Too Soft for Him, Just Right for Me
Size: Queen Size: 27.6"L x 15.7"W soft, Color: White
My husband purchased this for himself but found it to be too soft for his preference. I decided to try it, and it worked well for me. While I agree it’s not as firm as either of us typically like, it still provided adequate support, and the shape retention held up nicely. Overall, it wasn’t a match for him, but it worked just fine for my needs.
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Reviewed in the United States on January 29, 2026
★★★★★ 5
Yes
Size: Queen Size: 27.6"L x 15.7"W soft, Color: White
Great for a side sleeper. Firm enough that it doesn’t collapse but soft and cool
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Reviewed in the United States on April 1, 2026
★★★★★ 5
Love this pillow!
Size: Queen Size: 27.6"L x 15.7"W soft, Color: White
I sleep on my side and this pillow is great! I also enjoy the cooling aspect. I forgot my pillow at a hotel and had another one ordered before I got home.
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Reviewed in the United States on May 23, 2026