About The Product
- Double Time four pawl internal mechanism ensures rapid lightning-fast engagement for quick and confident pedal responsiveness
- Speedball bearings provide smooth, long-lasting rotation performance
- Available in 28 and 32 hole configurations with XD or Cassette driver
- 3D forged and machined for low weight and high strength
- Boost variant is 12mm Thru axle only
Upgrade your mountain bike or gravel bike with the SRAM 900 Disc Hub Rear 28H, engineered for durability, precision, and performance. This high-performance 12mm thru-axle hub is designed to fit 11- and 12-speed SRAM XD-R cassette systems, making it an ideal choice for aggressive trail riding, enduro, and adventure cycling.
Materials & Construction
Constructed from lightweight, durable aluminum (Aly), the SRAM 900 rear disc hub offers excellent strength-to-weight ratio, ensuring reliable performance on rugged terrain. Its sealed cartridge bearings provide superior protection against dirt, water, and debris, enhancing longevity and reducing maintenance.
Performance & Engineering
Featuring SRAM's innovative Double Time four-pawl engagement mechanism, this hub delivers rapid power transfer with a quick and responsive engagement point, crucial for technical climbs and explosive accelerations. The angled flange design optimizes spoke geometry for enhanced stiffness and wheel durability, providing a confident ride in demanding conditions.
Components & Technology
Compatible with SRAM's XD-R freehub body, this hub supports the latest 11- and 12-speed cassettes for seamless gear shifting. The included 1.8mm spacer ensures perfect fitment with XD cassettes, and the 6-bolt disc rotor interface offers reliable braking performance with compatible disc brakes. It features a 28-hole (28H) spoke count, ideal for balancing strength and weight.
Style & Use Case
Designed in sleek black, this rear hub complements any bike aesthetic while delivering high-end performance. Perfect for trail riding, enduro, All-Mountain, and gravel cycling, the SRAM 900 rear hub ensures smooth engagement and consistent performance over rough terrains.
Innovative & Differentiating Features
- Quick-Engagement Double Time pawls for minimal lag and immediate power transfer
- Sealed cartridge bearings for enhanced durability and reduced maintenance
- Angled flanges for optimized spoke tension and wheel strength
- Compatible with SRAM's XD-R and XDR cassette systems for versatile gearing options
- Includes axle end caps for easy customization to suit different frame specifications (excluding Boost hubs)
Specifications at a Glance
- Axle: 12mm Thru-axle, 148mm spacing (BOOST compatible with adapters)
- Flange Diameter: Left 58mm, Right 60mm
- Hub Drilling: 28 Holes (28H)
- Weight: Approximately 285 grams for lightweight performance
- Finish: Sleek black anodized for corrosion resistance and style
- Compatibility: 6-bolt disc rotors, SRAM XD-R / XDR cassette bodies
Optimize your wheelset with the SRAM 900 Disc Hub Rear-engineered for durability, precision, and performance in rigorous cycling environments. Trust in SRAM's technology to elevate your ride and achieve new cycling heights.
- Enhanced durability with sealed cartridge bearings for reliable performance on rugged terrain.
- Constructed from lightweight aluminum (Aly), optimizing strength-to-weight ratio for climbing and acceleration.
- Features SRAM XD-R and XDR cassette compatibility, supporting 11- and 12-speed drivetrain setups for versatile gear options.
- Designed with angled flanges for optimal spoke geometry, ensuring increased wheel stiffness, durability, and true-tolerance ride.
- Includes quick-respond double pawl mechanism for rapid engagement and smooth power transfer, perfect for aggressive riders and technical riding styles.
| Specification | Value |
|---|---|
| Manufacturer | SRAM |
| Manufacturer Part No. | 00.2018.013.008 |
| Universal Product Code | 710845784781 |
| Invoice Description | HUB RR SRAM 900 28 12mmTA XD XDR BK BOOST 11-12s |
| Shipping Weight | 0.85 lbs. |
| Package Dimensions | 8.5 x 3.5 x 3.25 |
| HTS Number | SAS 67228 |
| Country of Origin | TAIWAN |
| Use | RR |
| Gears | 11-12s XD |
| Spoke Count | 28H |
| Spacing / Axle | 12TA |
| Material | Aly |
| Color | Blk |
| Brake Type | 6B |
| OLD | 148 |
| PCD-L | 58 |
| PCD-R | 60 |
| LTF-L | 38 |
| LTF-R | 52 |
| CTF-L | 36 |
| CTF-R | 22 |
| Axle Length | 148 |
| Hole Diameter | 2.5 |
- 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
-
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
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
