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Promax EX-1 External Sealed Bearings BSA Bottom Bracket, CNC Machined Alloy, for 24mm Cranks
Reference Number: 8N83C6
Upgrade your bicycle's performance and reliability with the Promax EX-1 External Sealed Bearings BSA Bottom Bracket, crafted for 24mm cranks and compatible with 68mm or 73mm shell widths. Designed for cyclists seeking precision, durability, and seamless integration, this high-quality bottom bracket features advanced engineering and premium materials that elevate your ride.
Materials & Construction:
Built with cold-forged and CNC-machined alloy cups, the Promax EX-1 boasts enhanced strength, lightweight performance, and corrosion resistance. Its precision sealed bearings are engineered for maximum longevity and smooth pedaling efficiency, even under demanding riding conditions. Dual-labyrinth bearing covers provide superior dust and water protection, ensuring consistent performance over time.
Performance & Engineering:
The EX-1 utilizes sealed bearing technology, reducing friction and increasing efficiency for improved power transfer. The bearings are designed to withstand the rigors of mountain biking, road cycling, and gravel adventures. Its robust construction guarantees reduced maintenance and extended lifespan, while maintaining a lightweight profile at just 102.9 grams.
Components & Technology:
Compatible with a variety of spindle interfaces including Hollowtech II, FSA MegaExo, FSA MegaExo Light, and RaceFace EXI, the EX-1 offers versatile compatibility across numerous cranksets. The BSA (English) shell interface ensures easy installation and secure fitment in frames with 68mm or 73mm shell widths and 1.37" I.D. bottom bracket shells.
Style & Use Case:
Featuring a sleek black finish, the Promax EX-1 seamlessly blends with any bike aesthetic-from sleek road bikes to rugged mountain setups. Perfect for upgrading your existing bottom bracket or building a custom setup, this bottom bracket enhances pedaling stability, boosts overall bike efficiency, and promotes a smooth, silent ride.
Innovative Features & Benefits:
- Cold-forged, CNC-machined alloy cups for durability and precision
- Dual-labyrinth sealed bearings for superior dirt and water protection
- Compatible with multiple spindle interfaces, including and RaceFace
- Suitable for 68mm and 73mm shell widths, fitting a wide range of bikes
- Optimized for maximum power transfer and long-lasting performance
Elevate your cycling experience with the Promax EX-1 External BSA Bottom Bracket-designed for riders who demand performance, reliability, and style. Perfect for upgrading your bike's drivetrain or undergoing a complete build, this bottom bracket ensures a smooth, efficient, and trouble-free ride every time.
- Durable cold-forged and CNC-machined alloy cups provide superior strength, longevity, and resistance to corrosion for reliable performance on demanding rides
- Precision sealed bearings with dual-labyrinth covers ensure smooth rotation, minimal maintenance, and protection against dirt and moisture for maximum efficiency
- Compatible with all 24mm crank spindles and designed for 68 and 73mm BSA shell widths, making it an versatile upgrade for a wide range of road and mountain bikes
- Engineered with multi-interface spindle compatibility, including Hollowtech II, FSA MegaExo, and RaceFace EXI, offering versatile integration with popular cranksets
- Sleek black finish and innovative sealed bearing technology deliver a professional look and enhanced durability, making this bottom bracket ideal for high-performance cycling and everyday riding
| Item Specifications | |
|---|---|
| Bottom Bracket Shell I.D. | 1.37 |
| BB/Frame Interface | English |
| BB Shell Width (mm) | 68 |
| BB Shell Width (mm) | 73 |
| Weight | 102.9 |
| Spindle Interface Type | Hollowtech II |
| Spindle Interface Type | FSA MegaExo |
| Spindle Interface Type | FSA MegaExo Light |
| Spindle Interface Type | RaceFace EXI |
| Defined Color | Black |
Why 365 Cycles?
365 Cycles is an Authorized Promax Dealer, and we offer the Full Promax Warranty!
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365 Cycles delivers all your cycling needs fast! We don't waste time preparing your order. Our priority is to serve our customers first and foremost. If you need help picking the right product, have questions about bike component compatibility, or just want to geek out about bikes we are here 7 days a week! Simply put, we are bike experts from dirt to tarmac and want to make sure you get the full 365 Cycles experience when you shop with us.
At 365 Cycles our mission is to simplify the shopping experience. We want to get you the right product in a quick time frame and be here if you need help with questions, warranty, friend to talk to, etc.
We’re dedicated to building lasting relationships with our customers, communities, and team members. We combine the knowledge and service of a traditional bicycle shop with the convenience of shopping in your own home.
Shipping & Handling
Most orders placed during the workweek before 1:30 pm EST ship the same day, but in rare cases (peak season/holiday periods) handling time can take up to 48 hours. If you have questions regarding shipping estimates, please let us know prior to placing your order. There is a direct signature requirement for all orders over $500.Please allow 1-2 business days for your order tracking to update.
- Cut off for SAME DAY SHIPPING- 1:30 pm EST Monday - Friday
- Friday afternoon -Sunday orders ship the following Monday
- Due to carrier restrictions orders shipped to: PO Box, HI, AK, & PR 365 Cycles may use a comparable service to what was selected.
Combined Shipping Discounts
To offer customers savings on shipping, we offer discounts when shipping multiple items from our store. We cannot issue refunds on shipping once an order is finalized so please follow the 5 steps below and ask if you are having trouble with the discount before you make a purchase.- Be sure you are using the US site: https://www.ebay.com
- Select Add to Cart (instead of Buy It Now) with items from our store 365Cycles
- Click on Proceed to Checkout. On the checkout page, the shipping service on each line item needs to match
- Compare First Class vs Priority as sometimes Priority can be cheaper and it gets to you faster!
- You’ll need to change the shipping method to Priority on every item in your cart before the rate can be calculated.
Returns
365 Cycles offers returns for 30 days on new items in their original, intact packaging. Return shipping for ALL orders are to be paid by the buyer. Please be sure to read our return policy entirely and if you have any questions, please contact Customer Service.
Full refunds are issued on items that are brand new and we are able to resell as new. 365 Cycles reserves the right to deny returns that are outside of policy including, but not limited to, used items, items missing original packaging, items with damaged manufacturer packaging, or international orders. Return orders must be shipped in a box or bubble mailer. Items shipped without an outer box will incur a restocking fee. You will be contacted through eBay if your return is ineligible for a full refund.
Returns must be initiated within 30 days from purchase date through your Purchase History under My eBay.
If we make an error in shipping, please contact us -- we will ship out the correct item and provide a free prepaid return label as quickly as possible!
Exchanges
If you need to exchange your order, the fastest and easiest way to do this is to reorder. We will ship your new order immediately and, in the meantime, please initiate a return through eBay on the original item and return it. We will refund for the returned item once it is received back.
