FSA MegaExo Cartridge Bearings

Item Specifications: Bearing I.D., 25, Bearing O.D., 37, Manufacturer Number, MR066, Thickness, 7,

FSA MegaExo Cartridge Bottom Bracket Bearing MR066 - Durable High-Performance Cycling Component

Reference Number: 9M83M7

Upgrade your cycling performance with the FSA MegaExo Cartridge Bottom Bracket Bearing MR066 - sold individually for versatile maintenance and upgrades. Crafted with precision engineering, these high-quality bearings are designed to deliver smooth, reliable power transfer for road, mountain, and gravel bikes.

Premium Materials & Build Quality

Constructed from durable, corrosion-resistant steel, the FSA MegaExo MR066 bearings ensure longevity and consistent performance under demanding cycling conditions. Their sealed design offers protection against dirt, water, and debris, making them ideal for all-weather riding.

Advanced Performance & Engineering

Engineered for optimal efficiency, these cartridge bearings feature a precise 25mm inner diameter and 37mm outer diameter, ensuring a perfect fit for MegaExo bottom bracket shells. The 7mm thickness provides a balanced combination of strength and minimal weight, reducing rotational resistance and enhancing pedaling smoothness.

Components & Technology

FSA's proprietary MegaExo technology utilizes a robust cartridge design that simplifies installation and replacement, reducing bike downtime. The sealed bearing system minimizes friction and extends service intervals, providing peace of mind during long rides and intense training sessions.

Style & Use Case

Ideal for cyclists seeking high-performance upgrades or routine maintenance, the FSA MegaExo MR066 cartridge bearing is suitable for road, mountain, and hybrid bikes. Its sleek, professional-grade design complements any drivetrain setup, elevating your bike's overall efficiency and reliability.

Differentiating Features

- Precision-sealed design for enhanced durability

- Compatible with FSA MegaExo bottom brackets

- Easy to install and replace, saving maintenance time

- Designed for demanding cycling environments and rigorous use

Optimize your bike's performance with the trusted quality of FSA MegaExo cartridge bearings. Whether upgrading your existing setup or replacing worn components, this bearing ensures smooth pedaling and long-lasting value. Sold individually, it's the perfect component to keep your ride running at peak performance.

  • High-precision FSA MegaExo Cartridge Bottom Bracket Bearings engineered for durability and smooth performance, featuring high-quality materials for long-lasting use.
  • Designed with MegaExo technology, these bearings ensure enhanced power transfer and efficiency for aggressive riding and demanding mountain biking conditions.
  • Constructed with robust bearings measuring 25mm I.D. and 37mm O.D., offering a perfect fit for compatible FSA cranksets, and optimized for superior load distribution.
  • Ideal for both professional cyclists and serious enthusiasts, these bottom bracket bearings provide reliable operation in various cycling applications, from XC to trail riding.
  • Innovative design includes sealed cartridge bearings that resist dirt, grime, and water ingress, ensuring optimal performance and minimal maintenance over time.
Item Specifications
Bearing I.D. (mm)25
Manufacturer NumberMR066
Bearing O.D. (mm)37
Thickness7

Why 365 Cycles?

365 Cycles is an Authorized Full Speed Ahead Dealer, and we offer the Full Full Speed Ahead Warranty!

Fast Shipping!

Professional Customer Service- available 7 days a week
Check out our 200,000+ amazing reviews!

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.

  1. Be sure you are using the US site: https://www.ebay.com
  2. Select Add to Cart (instead of Buy It Now) with items from our store 365Cycles
  3. Click on Proceed to Checkout. On the checkout page, the shipping service on each line item needs to match
  4. Compare First Class vs Priority as sometimes Priority can be cheaper and it gets to you faster!
  5. 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.



BB4560 .

Company Details

365 Cycles
1180 Enterprise Rd
East Petersburg, PA 17520
United States

Connect With Us

Sign up for news, special offers & other good stuff!