SKU: 27771508538

EBMX Competition Jackshaft for Ultra Bee

Sale price$123.75 Regular price$137.50
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  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 21 - Aug 26

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Description

EBMX Competition Jackshaft for Ultra BeeCompetition use jackshaft developed in house by EBMX and used in E Xplorer and global race events. The original Ultra Bee jackshaft was never intended for 50 plus KW, 90 foot jumps and aggressive off road riding. Once you have to ditch the belt due to increased power and required reliability, the original jackshaft starts to fail, from snapping secondary sprocket bolts on landings and completely ovaling the entire body where the bearings fall out. It

Competition use jackshaft developed in house by EBMX and used in E-Xplorer and global race events.

The original Ultra Bee jackshaft was never intended for 50 plus KW, 90 foot jumps and aggressive off road riding. Once you have to ditch the belt due to increased power and required reliability, the original jackshaft starts to fail, from snapping secondary sprocket bolts on landings and completely ovaling the entire body where the bearings fall out. It was clear to EBMX a high powered jackshaft needed to be designed. 

Solid steel replaces the aluminium body now keeping the bearings in place and adding over all strength. We have made the total diameter larger and eight hybrid bearings replace the original four roller bearings. To remove the issue of constant shearing of the 12.9 grade bolts on the secondary side we upgraded to spline and sprocket, alleviating this issue altogether. This is a true performance upgrade for the Ultra Bee and if you're building a serious bike or even doing some mild track work this is a must have for reliability.

Maintenance Notes: Bearings must be maintained periodically, EBMX would recommend removing the jackshaft and repacking with grease every 6 months, depending on use. EBMX stock all replacement parts and bearings, the jackshaft is completely serviceable and is designed to be disassembled for maintenance when required. 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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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
SKU: 27771508538

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4.4 ★★★★★
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K
Verified Purchase
KP
San Leandro, US
★★★★★ 3
Excellent idea, could be better executed
I love the idea, but my problem with this product is that the bottom of the socks are made too short. The socks tend to slouch up when you wear them for awhile, so the entire ball of your foot will be exposed at some point. I would like to find a pair that cover the ball of the foot as well. But the socks are well made and attractive.
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Reviewed in the United States on May 28, 2019
J
Verified Purchase
Jasmine Takhtalian
Fort Morgan, US
★★★★★ 5
Perfect Solution for Moisturizing Heels Without Full Socks
Color: Black, Grey
Excellent quality and incredibly soft! These toeless socks are perfect if you like to moisturize your heels but don’t want to wear full socks. They stay in place and keep the lotion where it needs to be—highly recommend
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Reviewed in the United States on April 22, 2025
M
Verified Purchase
Mrs. C
Pawtucket, US
★★★★★ 5
These are quality materials!
The design and materials are above average. They fit great and are so comfortable. I have nerve damage and need open toes. These work perfectly. The colors are cute and did not fade upon washing. I will definitely order more, now that I’ve received my “trial” set. lol
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Reviewed in the United States on October 9, 2023
A
Verified Purchase
Amazon Customer
Lowell, US
★★★★★ 5
Thick material
These are really nice. Will be great in cooler weather as they are heavier than a summer sock.
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Reviewed in the United States on June 21, 2025
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Verified Purchase
Debbie
Cuba, US
★★★★★ 3
Weird Toe-Hole Not Pictured for Product
These socks arrived with a super weird toe-hole that is certainly not pictured on the product photo. If you're over 8, your big toe ain't fitting in that hole. Unless... it finds its way partially into the hole while sleeping and you awake in the middle of the night from startling big toe-pain. Alas, all is not lost! It is super easy to *carefully* cut the toe-hole seam. The result: The pair of toe free socks you thought you purchased in the first place.
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Reviewed in the United States on September 29, 2020

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