About The Product
- Aluminum alloy shells resist corrosion while being lightweight and dependable
- Sealed cartridge bearings offer smooth operation while resisting contaminents
- 12 speed Shimano Microspline compatible driver for use with modern Shimano drivetrains
Upgrade Your MTB Experience with the Origin8 MT-3100.3 MicroSpline Rear Hub - 32H, 12-Speed Compatibility, Black
Elevate your mountain biking setup with the Origin8 MT-3100.3 MTB Rear Hub, engineered for durability, precision, and modern 12-speed performance. Designed for mountain bikers seeking reliable components that withstand tough terrain while providing seamless shifting and smooth rolling.
Materials & Construction
Crafted from high-quality aluminum alloy, the MT-3100.3 hub boasts a lightweight yet robust shell that resists corrosion and daily wear. Its durable construction ensures long-lasting performance in challenging trail conditions, making it a dependable choice for aggressive riding and off-road adventures.
Performance & Engineering
Equipped with sealed cartridge bearings, this hub delivers exceptionally smooth operation while resisting dirt, mud, and water ingress. The sealed design minimizes maintenance needs and improves longevity, so you can focus on the trail without worry. With a 12-speed Shimano MicroSpline driver, it guarantees flawless compatibility with the latest Shimano drivetrains, offering precise and reliable gear shifts across a wide gear range.
Components & Technology
The rear hub features a 12-speed MicroSpline driver system, providing quick engagement and high efficiency for aggressive climbing and fast descents. It has a 12mm thru-axle with a 142mm OLD (Over Locknut Dimension), compatible with modern mountain bike frames for enhanced stiffness and stability. The 32-hole configuration offers a perfect balance of strength and weight, ideal for trail, enduro, or XC setups.
Style & Use Case
Finished in a sleek black (Blk) aesthetic, the Origin8 MT-3100.3 hub complements a variety of mountain bike styles. Whether building a new trail-ready wheel set or upgrading your current wheelset for improved reliability and performance, this hub is suited for riders who demand high quality, innovation, and versatility.
Innovative & Differentiating Features
- Corrosion-resistant aluminum alloy shells for durability in rugged environments
- Sealed cartridge bearings for smooth, maintenance-friendly operation
- MicroSpline compatibility ensures seamless integration with Shimano's latest 12-speed drivetrains
- Lightweight design optimized for performance-focused mountain biking
Optimize your mountain bike's performance with the Origin8 MT-3100.3 MTB Rear Hub - a perfect blend of durability, technology, and style designed to handle the demands of serious riders. Elevate your ride today!
- Lightweight aluminum alloy construction combines durability and corrosion resistance, ensuring long-lasting performance in all weather conditions.
- Designed with sealed cartridge bearings, these MTB hubs deliver smooth, reliable rotation while effectively preventing dirt, water, and debris ingress for optimal lifespan and consistent performance.
- Compatible with 12-speed Shimano MicroSpline drivetrains, the Origin8 MT-3100.3 hubs provide seamless gear engagement, making them ideal for modern mountain biking setups.
- Precision-engineered with 12x142mm thru-axle spacing and 32-hole configuration, offering optimal rigidity, stability, and wheel strength for aggressive trail riding and technical terrain.
- Enhanced style and versatility with sleek black finish and modern MTB aesthetics, suitable for cross-country, trail, or all-mountain riding, ensuring your bike looks as good as it rides.
| Specification | Value |
|---|---|
| Manufacturer | ORIGIN8 |
| Universal Product Code | 888571113790 |
| Invoice Description | HUB RR OR8 MT3100.3 32x142x12mmTA 6B 12sMICRO SB BK |
| Shipping Weight | 0.58 lbs. |
| Package Dimensions | 5.5 x 2.55 x 2.55 |
| HTS Number | 8714.93.3500C2 |
| Country of Origin | CHINA |
| Use | RR |
| Gears | 11-12s MicroSpline |
| Spoke Count | 32H |
| Spacing / Axle | 12TA |
| Material | Aly |
| Color | Blk |
| Brake Type | 6B |
| OLD | 142 |
| Bearing Type | Sealed |
| Hole Diameter | 2.5 |
- Supplier:
- JBI
- MAP:
- Yes
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
