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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
4.2 ★★★★★
Based on 16 reviews
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Product Reviews
★★★★★ 5
Good balls
Color: S6-glow
My dog is a chewer, and these have held up for close to a year actually a pretty good product
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Reviewed in the United States on May 27, 2026
★★★★★ 3
Disappointed
Color: S6-muti-color
These were great for about 20 minutes then they stopped squeaking...we have 2 left that I have saved but the other 4 do not squeak anymore...disappointed as my dog loves to squeak things...would not buy these again...My dog is only an 8lb dog too...but he can still play with the balls without the squeak...
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Reviewed in the United States on April 26, 2026
★★★★★ 5
Great Value for a ball my dog loves!
Color: S6-muti-color
I wish these ball were in the subscription program! My dog gets sooo excited by the new ball, but her interest in things lasts for a few days. She kills the squeak within 11minutes, but the squeaker stays in place rather than becoming a chocking or swallow hazard, and she still loves to chew it. Next, we must throw the ball approximately 723 times the first day, possibly 496 times on day 2, and just 3- 4 on day 3, at which point she will chase the ball before hollering "it's over here if you need it," while she checks on the chipmunk den. We currently have 17 of these balls in our yard (because we have given several leftovers to a less discriminating doodle next door). These balls hold up really well, get her extremely active for the first couple of days, and are a much cheaper than doggie daycare (after an active morning with a new ball, she is happy to chew on it and sleep much of the day). I always have these on hand!
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Reviewed in the United States on November 22, 2025
★★★★★ 4
Pieces chewed off
Color: white & green
My Aussiedoodle loves it. I throw it down the hallway, it bounces crazy, and he chases it. The only complaint is that he can't chew much of the ball part. So now I have to have it put away and brought out for special playtime.
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Reviewed in the United States on April 9, 2026
★★★★★ 5
Heavy chewer approved.
Style: Ball, Size: Medium (Pack of 1)
My pomsky will destroy a toy in minutes. Ropes, and the "indestructible" nylon type stuffs are no match for my furry shark. This ball has stood up to him like David. He loves the crunch and it is so much more tolerable than a squeaker. These will be a staple in his toy box - Chuckit toys are really the most durable dog toys I have found in three years.
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Reviewed in the United States on April 26, 2026