About The Product
- External English (BSA) threaded bottom bracket for 73mm shells
- Includes enduro silicone dust seals, 3 sizes of BB spacers for use with 68mm shells, and 4 crank spindle spacers
- Angular contact bearings
# Wheels Manufacturing Shimano 24mm Angular Contact Bearing BSA MTB Bottom Bracket
Upgrade your mountain biking setup with the Wheels Manufacturing Shimano 24mm Angular Contact Bearing BSA MTB Bottom Bracket - a precision-engineered, high-performance component designed for durability, smooth operation, and versatile compatibility. Crafted with premium materials and innovative technology, this bottom bracket is ideal for serious cyclists seeking reliable performance on rugged trails or challenging terrains.
## Materials & Engineering Excellence
Constructed with a CNC-machined aluminum shell, this bottom bracket ensures precise bearing alignment and an impeccable frame fit for both 68mm and 73mm BSA bottom bracket shells. The anodized aluminum cups provide exceptional durability and corrosion resistance, standing up to the demands of aggressive mountain biking. The sealed Enduro ABEC-5 angular contact bearings offer a perfect balance of low friction and high load capacity, delivering smooth power transfer and prolonged lifespan.
## Superior Components & Technology
Featuring Enduro sealed bearings, the Wheels Manufacturing MTB bottom bracket offers replaceable bearings for easy maintenance and extended service life. The use of ABEC-5 angular contact ball bearings allows for optimized handling of combined axial and radial loads, making it suitable for high-performance mountain biking and aggressive riding styles. The bottom bracket supports 24mm spindle interface cranks from Shimano, Race Face, FSA, and others, with compatibility for spindles at least 104mm in length.
## Versatile Compatibility & Use Cases
Designed for English threaded BSA shells measuring 68mm or 73mm in width, this bottom bracket supports a wide range of crank interfaces, including Shimano Hollowtech II, FSA MegaExo, RaceFace EXI, SRAM GXP 24/22mm, and Praxis M30/28. Whether you're assembling a new mountain bike build or upgrading an existing frame, this bottom bracket ensures optimal performance across various bike types and disciplines, from XC racing to trail riding.
## Innovative & Differentiating Features
- Replaceable Enduro Bearings: Simplifies upgrades and maintenance, maximizing your investment.
- Precision CNC Machined Aluminum Shell: Ensures tight tolerances and frame compatibility for a secure fit.
- Enduro ABEC-5 Angular Contact Bearings: Handle combined loads efficiently for smooth pedaling.
- Includes Replacement Dust Covers & Seals: Protects internal components from dirt, moisture, and debris.
- Made in the USA: Quality craftsmanship backed by American manufacturing standards.
## Specifications
| Feature | Details |
|---------------------------------|-------------------------------------------------|
| Shell Diameter | 33.6mm x 24 TPI |
| Shell Width | 68mm / 73mm |
| Spindle Diameter | 24mm (compatible with Shimano, Race Face, FSA, etc.) |
| Frame Compatibility | BSA / English threaded |
| Bearing Type | Enduro ABEC-5 Angular Contact Sealed Bearings |
| Weight | Approx. 96g (depending on model) |
| Material | Anodized aluminum, sealed bearings |
| Color | Black |
| Made in the USA | Yes |
Elevate your mountain biking experience with this high-quality, durable bottom bracket designed to provide seamless power transfer, reliable performance, and easy maintenance. Perfect for avid riders and professional mechanics alike, the Wheels Manufacturing Shimano 24mm Angular Contact Bearing BSA MTB Bottom Bracket is the smart choice for ensuring your bike performs at its best on every trail.
- Premium Materials: Constructed with CNC-machined anodized aluminum cups and Enduro sealed ABEC-5 angular contact bearings for superior durability, corrosion resistance, and long-lasting performance in rugged MTB conditions.
- Optimized Performance & Engineering: Designed for precise bearing alignment and smooth power transfer, featuring angular contact ball bearings that efficiently handle combined axial and radial loads for enhanced pedaling efficiency.
- Advanced Components & Technology: Compatible with 24mm Shimano, Race Face, FSA, and other crank spindles, supporting multiple bottom bracket standards (68mm, 73mm shell widths) and spindle interfaces like Hollowtech II, GXP, and DUB for versatile upgrades.
- Stylish & Versatile Use Case: Finished in sleek black with anodized aluminum cups, ideal for mountain biking and road riding, offering excellent performance across various cycling disciplines with optional replacement seals and dust covers for added longevity.
- Innovative & Differentiating Features: Features a CNC-machined aluminum shell for precise frame fit, replaceable Enduro bearings for easy maintenance, and compatibility with a range of crank spindles and shell widths, making it a reliable choice for demanding riders seeking durability and performance.
| Specification | Value |
|---|---|
| Manufacturer | WHEELS MANUFACTURING |
| Manufacturer Part No. | BB-MTB-3 |
| Universal Product Code | 811079020109 |
| Invoice Description | BB SET WMFG MTB-3 ENG SHI ACB BRG BK |
| Shipping Weight | 0.29 lbs. |
| Package Dimensions | 4.1 x 2.15 x 2.5 |
| Country of Origin | UNITED STATES |
| Shell | 68/73mm |
| Interface | ENG |
| Spindle Type | Shimano HTII 24mm |
| Color | Black |
- Supplier:
- JBI
Bike Junkies offers no‑hassle returns and exchanges within 60 days of delivery. We want every customer to feel confident when shopping with us, and our return process is designed to be simple, fair, and fast.
Return Eligibility
To qualify for a return or exchange, the following conditions must be met:
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The item must be in new, unused, and uninstalled condition.
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All original packaging, tags, hardware, and accessories must be included and intact.
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Items showing wear, installation marks, damage, or improper use cannot be accepted.
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An order number is required.
Once your return is received at our warehouse, a refund will be issued within 5 days after inspection.
Refunds
Refunds are issued to the original form of payment once the returned item has been received and approved. If we are unable to refund to the original payment method, the refund will be issued as store credit.
Depending on your bank or credit card provider, it may take an additional 2–3 business days for the refund to appear in your account.
Exchanges
To make an exchange, simply complete the return process and then place a new order for the item you want instead. This ensures the replacement item is reserved and ships quickly.
How to Start a Return
To request a Return Authorization (RA#), contact us at support@bikejunkies.com. Please include your order number and the item you wish to return.
Once approved:
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You will receive a Return Authorization email with instructions.
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Print the prepaid label provided by us. ($9.99 will be deducted from your refund)
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Ship the item back within 7 days of the RA being issued as RA #'s are only valid for 7 days.
Please do not tape anything to the original product packaging. Place the item inside a proper shipping box. Using the manufacturer’s box as the shipping container will result in damage and the return may be rejected.
Be sure to keep your return tracking number. Powersport Junkies is not responsible for lost return shipments. You will receive a confirmation email once your return has been processed and refunded.
Defective, Incorrect, or Damaged Items
If you receive a defective, damaged, or incorrectly shipped item, contact us immediately. We will cover the return shipping cost and ensure the issue is resolved quickly.
Non‑Returnable Items
Certain items cannot be returned, including:
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Electronics with opened packaging or broken manufacturer seals
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Any part that has been installed or shows installation attempts
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Tools or chemicals that have been opened or unsealed
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Open‑box items with destroyed or missing packaging
Our Info
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Storefront name: Bike Junkies
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Address: 940 Calle Amanecer, Suite N
San Clemente, CA 92673 -
Phone: 800-605-2152
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Support email: support@bikejunkies.com
- Support hours + timezone:
Monday-Friday: 9:00 AM-5:00 PM PST
Saturday: 9:00 AM-3:00 PM PST
Sunday: Closed
This Shipping Policy explains how orders are processed, handled, and delivered by Bike Junkies, including delivery timelines, shipping coverage, and special conditions for military addresses. It is designed to give customers a clear understanding of what to expect when placing an order.
Bike Junkies is proud to be an authorized dealer of the brands we currently offer. When you purchase from us, you are guaranteed to receive genuine, brand-new products backed by the full manufacturer warranty. We work directly with the manufacturers to ensure you receive the highest quality service and support.
Order Processing and Handling
Orders are processed quickly to ensure fast delivery. Our standard handling time is 0–1 business days. Order cutoff time is 12 PM PST Monday-Friday and orders placed after that will be shipped shipped next business day.
Transit Times
Once shipped, orders typically arrive within 2–3 business days. Transit times may vary slightly depending on the destination, weather conditions, or carrier-related delays. Delivery estimates apply only after the order has left our facility.
Delivery Schedule
Standard delivery occurs Monday through Friday. Saturday delivery may be available.
Shipping Coverage
Bike Junkies offers free shipping to the lower 48 states of the United States. We do not ship to the following locations:
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Alaska
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Hawaii
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Puerto Rico
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Any international destination outside the United States
Orders placed with shipping addresses in restricted locations will be canceled and refunded.
Military Shipping (APO/FPO)
Bike Junkies ships to APO/FPO military addresses using USPS only.
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We cannot ship hazardous materials or oversized items to military addresses due to carrier and military mail restrictions.
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Transit times to APO/FPO locations may vary significantly depending on military mail processing.
Address Accuracy and Delivery Issues
Customers are responsible for ensuring that all shipping information provided at checkout is accurate and complete. Bike Junkies is not responsible for delays, lost packages, or delivery failures caused by incorrect or incomplete addresses. If a package is returned due to an address error, additional shipping charges may apply to resend the order.
Lost, Delayed, or Damaged Shipments
If a shipment is delayed, lost, or arrives damaged, customers should contact us promptly so we can assist with initiating a claim or resolving the issue with the carrier. While we support the process, final decisions regarding claims are made by the carrier.
Tracking Information
A tracking number is provided via email once the shipping label has been created. Tracking updates may take up to 24 hours to appear after the label is generated.
Shipping Restrictions
Certain items may be subject to shipping restrictions due to size, weight, or hazardous material regulations. If an order cannot be shipped due to such restrictions, we will notify the customer to arrange an alternative solution.
Our Info
-
Storefront name: Bike Junkies
-
Address: 940 Calle Amanecer, Suite N
San Clemente, CA 92673 -
Phone: 800-605-2152
-
Support email: support@bikejunkies.com
- Support hours + timezone:
Monday-Friday: 9:00 AM-5:00 PM PST
Saturday: 9:00 AM-3:00 PM PST
Sunday: Closed
For warranty issues please contact us at support@bikejunkies.com. Each Brand is different and we can provide instruction to complete warranty issues.
Bike Junkies is proud to be an authorized dealer of the brands we currently offer. When you purchase from us, you are guaranteed to receive genuine, brand-new products backed by the full manufacturer warranty. We work directly with the manufacturers to ensure you receive the highest quality service and support.
Our Info
-
Storefront name: Bike Junkies
-
Address: 940 Calle Amanecer, Suite N
San Clemente, CA 92673 -
Phone: 800-605-2152
-
Support email: support@bikejunkies.com
- Support hours + timezone:
Monday-Friday: 9:00 AM-5:00 PM PST
Saturday: 9:00 AM-3:00 PM PST
Sunday: Closed
