About The Product
- Bolt on, 6-bolt 7 speed hub drilled for use with 12g spokes
- Suitable for MTB, commutor and urban use where a heavy duty interface is needed
- Forged, CNC machined hub shell with loose ball bearings
Upgrade Your MTB and Urban Bicycle with the Wheel Master MT-4000 MTB Rear Hub - 36H, Black, 5-7 Speed Freewheel
Enhance your cycling experience with the Wheel Master MT-4000 MTB Rear Hub, engineered for durability, performance, and versatility. Crafted from premium materials and featuring innovative components, this heavy-duty hub is designed to withstand tough terrains and daily commuting, making it an ideal choice for mountain biking, urban cycling, and commuter bikes.
Materials & Build Quality:
Constructed from high-strength aluminum (Aly), the Wheel Master MT-4000 boasts a forged, CNC-machined hub shell that ensures precise manufacturing and robust performance. Its lightweight yet sturdy aluminum body contributes to a balanced ride without compromising durability, providing long-lasting reliability for demanding riding conditions.
Performance & Engineering:
Designed with a 36-hole configuration and 12-gauge spokes, this hub delivers optimal load distribution and stability. The loose ball bearing system ensures smooth wheel rotation and excellent longevity, while the bolt-on, 6-bolt 7-speed freewheel (FW) capability allows for versatile gear options suitable for various terrains and riding styles.
Components & Technology:
Compatible with 5-7 speed freewheels, the MT-4000 combines innovative engineering with reliable components. The hub features a specific spacing of 135mm (OLD), with a bolt-on axle system (B/O-NUT 3/8x26t) for quick installation and maintenance. Its precision PCD (Pitch Circle Diameter) of 45mm on both sides ensures compatibility with widely used components, simplifying upgrades and repairs.
Style & Use Case:
Sporty and utilitarian, the black anodized finish provides a sleek look suitable for mountain bikes, city bikes, and commuter cycles. Whether you're conquering rugged trails, navigating urban streets, or daily commuting, this hub offers dependable performance and ease of installation. Its heavy-duty interface is perfect for riders demanding durability and efficiency on their daily rides.
Key Features & Differentiators:
- Heavy-duty 6-bolt rotor compatibility supports robust braking systems
- Designed for 5-7 speed freewheels, offering versatile gearing
- CNC machined, forged aluminum shell for superior durability and lightweight performance
- 12g spoke drillings for optimized spoke tension and strength
- Compatible with mountain, commuter, and urban cycling setups
- Smooth ball bearing system for enhanced wheel rotation and longevity
Elevate your bike's performance with the Wheel Master MT-4000 MTB Rear Hub - a perfect blend of strength, precision engineering, and sleek styling. Ideal for cyclists seeking a reliable, high-quality hub that stands up to rigorous riding and demanding conditions.
Upgrade now for improved stability, easier maintenance, and a smoother ride!
- High-quality, SEO-friendly bullet points for the Wheel Master MT-4000 MTB Hubs RR 36H Black 5-7s FW:
- Designed with durable forged CNC-machined aluminum hub shells for superior strength and longevity in demanding MTB, commuter, and urban riding conditions.
- Built for performance with loose ball bearings and 12g spoke compatibility, ensuring smooth rotation and reliable power transfer on rugged trails and city streets.
- Features a bolt-on 6-bolt design compatible with 5-7 speed freewheel setups, offering versatile gearing options for various riding terrains and styles.
- Engineered with precise 36-hole (36H) count and 135mm OLD spacing for excellent wheel strength, stability, and compatibility with a wide range of bicycle frames.
- Includes innovative heavy-duty construction and bolt-on axle technology, making installation straightforward and ensuring a secure, durable connection for intense mountain biking and urban adventures.
| Specification | Value |
|---|---|
| Manufacturer | WHEEL MASTER |
| Universal Product Code | 888571092439 |
| Invoice Description | HUB RR WM MT3400 BO 6B 5-7s 36x135 BK 12g |
| Shipping Weight | 0.82 lbs. |
| Package Dimensions | 6.95 x 2.6 x 2.55 |
| HTS Number | 8714.93.3500C2 |
| Country of Origin | CHINA |
| Use | RR |
| Gears | 5-7s FW |
| Spoke Count | 36H |
| Spacing / Axle | B/O-NUT 3/8x26t |
| Material | Aly |
| Color | Blk |
| Brake Type | 6B |
| OLD | 135 |
| PCD-L | 45 |
| PCD-R | 45 |
| LTF-L | 34 |
| LTF-R | 46 |
| CTF-L | 33.5 |
| CTF-R | 21.5 |
| Bearing Type | Loose Ball |
| Axle Length | 175 |
| Hole Diameter | 2.5 |
- Supplier:
- JBI
- Color:
- Black
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
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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
