This seems to work well. I like the one piece design. Strong so far. We will see what a summer worth of cranking will do to it.
All Balls Jackshaft Kit 10-Tooth Small Gear - Harley Touring & Softail
About All Balls
All Balls Racing supplies wheel bearings, steering stem kits, fork seals, linkage rebuilds and shock components across the powersports market. On an older V-twin, a bearing and seal refresh is one of the cheapest ways to make a bike feel new again.
Upgrade your V-twin's primary with this All Balls jackshaft kit, featuring a 10-tooth small gear. This design is engineered to reduce shaft binding and improve the transfer of power to your rear wheel, making for a more responsive ride. It's a solid choice for riders focused on optimizing their drivetrain's performance.
Why riders pick this
- 10-tooth small gear configuration for improved primary drive
- Relocated cushioning spring eliminates inner primary support bearing
- Reduces shaft binding for smoother torque delivery
- Designed for simpler installation than stock components
- Enhances overall efficiency of your V-twin's drivetrain
This All Balls jackshaft kit is a direct replacement that brings modern engineering to your V-twin's primary drive. The 10-tooth small gear configuration is specifically chosen to improve the efficiency of your motorcycle's power transfer, ensuring that more of your engine's output makes it to the ground. If you're experiencing sluggish power delivery or want to ensure your primary drive is running at its best, this kit is a critical upgrade.
Optimized Primary Drive Performance
- Engineered with a 10-tooth small gear for enhanced primary drive efficiency
- Relocated cushioning spring design eliminates the need for an inner primary support bearing
- Reduces shaft binding for smoother power transfer and increased torque delivery
- Designed for simpler installation compared to the factory jackshaft assembly
A Smart Upgrade for Your V-Twin
Upgrading your jackshaft is a smart move for any rider looking to maintain or improve their motorcycle's performance. The elimination of the inner primary support bearing not only simplifies installation but also reduces potential points of failure within the primary system. This kit is built for durability and reliable operation, making it an essential component for keeping your Harley running strong.
Specifications
- Brand: All Balls
- Manufacturer Part #: 79-2106
- UPC: 723980409631
- Length: 5 in
- Width: 7.9 in
- Height: 1.5 in
- Weight: 0.79 lbs
- Country of Origin: China (Mainland)
Common questions
Will this jackshaft kit reduce shaft binding on my Harley?
Yes, the 10-tooth gear configuration and the relocated cushioning spring are specifically engineered to minimize primary shaft binding, which helps deliver more consistent torque.
Do I still need an inner primary support bearing with this kit?
No, the design of this All Balls kit, with its relocated cushioning spring, eliminates the requirement for an inner primary support bearing.
Is this jackshaft kit difficult to install?
Installation of this kit is designed to be simpler than the stock jackshaft setup, partly due to the elimination of the inner primary support bearing.
Ordering from Vtwinbikers
- Brand new, sourced through authorized US distribution — never used, never grey-market.
- Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
- Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
| BRAND | All Balls |
| TYPE | Electrical |
| SKU | 279-2106 |
| WEIGHT | 0.79 lb |
kicks ass , thnk god cause its been hell finding one that didn't break. lol
Doin great, even with only one starter bolt holding it in. Sometimes there's no bolt and it works well. I've road it pretty hard and after 4 months, it's thrown the seal out and I've got to replace it.
This has been a very good drive. I machined the outer primary bushing a little snug. Miss engaged pretty often. Keep in mind I am running a belt drive primary! And my fault of to tight of tolerance. After a little riding, it is flawless! 110” high compression big cam S&S !
This replacement jackshaft on my 2001 dyna was a quick install and seems to work better than the original multi piece assembly . Hoping it stops the problems I have had with tearing up starters and ring gears
What a great fix for the old, worn and far too many piece jackshaft assembly! I love this product!