Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 10 - Jul 15
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
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
4.8 ★★★★★
Based on 140 reviews
Sort
Product Reviews
★★★★★ 5
Most comfortable pillow I’ve ever slept on
Size: Queen (1 Count), Color: Crescent White(cooling)
This is the most comfortable pillow I have ever slept on. It doesn't mash down like other pillows. Cradles my neck perfectly plus it’s cool. I broke my neck a couple of years ago and this pillow feels very good and comfortable. Definitely recommend to everyone. Ive used it since May and it’s retained its shape.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 6, 2026
★★★★★ 4
Smell
Size: Queen (2 Count), Color: Original White (Cooling)
The fact that there are not more comments on the smell of these pillows has me worried about some of yall. Listen, I LOVE the weight, and the firmness, it’s perfect for that. However, these pillows are RANK. They have a very strong mildew-ish smell that lingers. I took the outer cover off and washed it and let the pillow air out for a few days, the smell is still very strong when you press your face against it, which one does because it is in fact designed for that purpose. It smells so bad. It’s nauseating. I can smell it through two pillowcases and blanket that I threw on top of them hoping an extra layer would trap the smell. I’ll bake them in the Texas sun tomorrow and hope that helps, because otherwise these are the perfect pillows for someone who wants to feel like they are hugging a torso but can’t stand the sound/feel of someone else breathing. I don’t know…4 stars, if the smell goes away I’ll come back.
Update: many many days later. Either they don’t really smell anymore or I got use to it. They’ve held their firmness and shape well. I like them.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 9, 2026
★★★★★ 5
Actually Cooling Pillow
Size: Queen (1 Count), Color: Original White (Cooling)
This is a really nice pillow, I was worried it would be too soft or too firm but it's just right and it's actually cooling, it feels cool every time I touch it. I've noticed an improvement in sleep since using it. Would recommend!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
★★★★★ 5
Repurchased in King Size – Still Love These Cooling Pillows
Size: King (2 Count), Color: Original White (Cooling), Size: King (2 Count), Color: Original White (Cooling)
After using the queen-size version of these pillows for over a year, we purchased the king-size set when we upgraded to a king mattress. Both my husband and I really like them.
The cooling feature works well, and we like that each side feels different—when I run cold, I use the softer bamboo side, while my husband prefers the cooler side since he tends to sleep hot. They fit well in our king-size pillowcases and feel supportive in all sleeping positions, whether I’m on my stomach, side, or back.
I also appreciate that you can remove some of the filling to adjust the firmness. The covers are washable, which makes them easy to maintain. Overall, we’re very happy with this repurchase and the long-lasting comfort.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 15, 2026
★★★★★ 3
Not great at cooling
Size: Queen (2 Count), Color: Original White (Cooling)
Each pillow cover has 2 sides, one marked for cooling, and the other a different fabric. The cooling side is about the same effectiveness as having a silk or satin pillow cover. It's only cool when you first touch it. The cooling side doesn't seem to absorb or wick moisture, so if you are sweaty - it keeps the moisture in place. You'll definitely want a regular pillow case over the pillow cover. In fact, if you suffer from night sweats, the non-cooling side is actually more comfortable. The pillow fill is ample, and simple to squish around for more support for your neck, etc. Think bean bag. But it will retain your impression after use. I find I need to do as I did when I had down pillows - give it a few good shakes in the morning when I make the bed to get it evened out for the coming night. In all, it is a well-made and comfortable pillow to sleep on, but it does not excel in cooling.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
recommand products
Markisen ohne OVP / 2. Wahl, 25 - 60 % Nachlass - Dometic, Brustor, Thule & Fiamma
23.37
Handgepäck Rucksack 40x20x25 cm in verschiedenen Farben – Granori Official
22.97
Alu-Light XL Dachzelt (Geprüfte B-Ware) – Naturbummler
21.64
Faltzelt FleXtents PRO. Faltzelt 4x6. Faltzelt Schwarz. Jetzt kaufen
28.84
Dachzelt Elements Gen II - Farbe Midnight Stone | horntools
21.11