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Shimano BB-UN300 Square Spindle Bottom BracketsFits JIS square-taper cranksets. Crankarm fixing bolts sold separately. Hollow spindle. For E-Type Front Derailleur. Item Specifications: BB Shell Width (mm), 68 mm, Bottom Bracket Shell I.D., 1.37, Spindle Length, 122.5, BB/Frame Interface, English, Spindle Interface Type, Square Taper JIS, SHIPS TODAY! Order before 1:30PM EST, M - F, and this item ships the same day!HAVE A QUESTION?Expert customer service by bike experts! A Real Brick And Mortar Retail Bicycle Shop with people you can talk to!
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[isdntekvideo] Shimano BB-UN300 JIS Square Taper Bottom Bracket 68x122.5mm for E-Type Derailleurs Reference Number: 2N76C6
Upgrade Your Bike\'s Performance with the Shimano BB-UN300-E Square Taper JIS Bottom Bracket - 68x122.5mm
Maximize your cycling efficiency and drivetrain reliability with the Shimano BB-UN300-E Square Taper JIS Bottom Bracket. Designed for ride-quality-conscious cyclists and bike shops, this high-performance bottom bracket offers smooth rotation, durable construction, and compatibility across a range of JIS square-taper cranksets.
Materials & Engineering Excellence
Constructed with a precision-engineered hollow spindle, the Shimano BB-UN300-E features lightweight yet robust materials critical for optimal power transfer and longevity. The durable black finish not only adds a sleek, stylish look but also helps resist corrosion, ensuring your bottom bracket remains resilient against wear and environmental factors.
Performance & Components
Engineered for superior performance, this bottom bracket is tailored for E-Type front derailleur setups, making it ideal for road bikes, hybrid bikes, and urban cruisers. Its JIS square-taper interface guarantees a secure fit with compatible cranksets, providing smooth, consistent pedaling action. The hollow spindle design reduces weight without sacrificing strength, enhancing overall riding experience.
Technology & Features
- Compatible with JIS square-taper cranksets for reliable power transfer
- Designed with a 68mm shell width and 122.5mm spindle length to fit most standard frames
- Ensures compatibility with English bottom bracket shell standards (1.37 I.D.)
- Crankarm fixing bolts sold separately, allowing for customization based on your bike\'s setup
Style & Use Case
Whether you\'re a daily commuter, weekend cyclist, or competitive rider, the Shimano BB-UN300-E offers a perfect blend of performance, durability, and style. Its black finish complements various bike aesthetics, making it a versatile choice for bike shop inventory or custom builds.
Innovative & Differentiating Features
The hollow spindle technology and high-quality components differentiate the Shimano BB-UN300-E as a trusted choice among cycling enthusiasts and professionals seeking dependable bottom bracket solutions. Its straightforward installation and compatibility with a wide range of JIS cranksets make it an excellent upgrade for enhancing ride quality.
Optimize your bike\'s drivetrain with the Shimano BB-UN300-E Square Taper Bottom Bracket - engineered for durability, performance, and seamless compatibility. Perfect for upgrading or replacing your current bottom bracket, this component guarantees a smoother, more efficient ride every time.
- Universal Compatibility with JIS Square Taper Cranksets, designed for 68mm shell width and 122.5mm spindle length to fit a wide range of road and mountain bikes.
- Constructed with high-quality materials featuring a hollow spindle for optimized weight reduction and efficient power transfer, enhancing overall riding performance.
- Engineered for durability and smooth pedaling, this Shimano BB-UN300 bottom bracket supports E-Type front derailleurs, making it an ideal choice for versatile bike builds and upgrades.
- Stylish black finish provides a sleek, low-profile look that complements any bike aesthetic, suitable for road, commuter, and touring bikes requiring reliable bottom bracket performance.
- Quick and straightforward installation with a 1.37-inch shell diameter and compatible with standard English threaded frames, ensuring a secure fit and long-lasting performance.
Item SpecificationsBottom Bracket Shell I.D.1.37BB/Frame InterfaceEnglishBB Shell Width (mm)68Spindle Interface TypeSquare Taper JISSpindle Length122.5Defined ColorBlack
Why 365 Cycles? 365 Cycles is an Authorized Shimano Dealer, and we offer the Full Shimano Warranty! Fast Shipping! Professional Customer Service- available 7 days a week
Check out our 200,000+ amazing reviews! About Us Shipping Returns Contact
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..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 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 .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 on the original item and return it. We will refund for the returned item once it is received back.
CR3493. Company Details
365 Cycles
1180 Enterprise Rd
East Petersburg, PA 17520
United States
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