About The Product
- Steel rings with polymer spacers
- 433g
- SHIMANO Equivalent MF-TZ21 / MF-TZ20
Upgrade your mountain biking or commuter setup with the Sunrace MF-M2A 6-Speed Freewheel - a reliable, high-performance component engineered for smooth, precise shifting and long-lasting durability. Crafted with premium materials and innovative design features, this freewheel is your ideal choice for upgrading older bikes or enhancing new builds seeking seamless gear transitions and optimal performance.
Materials & Engineering:
Built with steel sprockets combined with durable polymer spacers, the Sunrace MF-M2A ensures longevity and resistance to wear under demanding riding conditions. Weighing approximately 433 grams, it strikes an excellent balance between lightweight performance and robust construction, making it suitable for a variety of riding styles from urban commuting to trail riding.
Components & Technology:
This 6-speed freewheel features a gear range of 14 to 28 teeth, providing versatile gearing options suitable for racing, touring, or casual riding. Its design is directly comparable to Shimano's MF-TZ21 and MF-TZ20 models, offering compatibility and easy installation with a wide range of bike drivetrains. The use of polymer spacers reduces noise and friction, resulting in quieter operation and smoother gear engagement.
Performance & Use Case:
Designed for reliable, efficient performance, the Sunrace MF-M2A freewheel delivers consistent engagement across all gears, ensuring your power transfer remains smooth and responsive. Its compatibility with UCP (Unified Casing Profile) hub bodies makes it an ideal upgrade for various wheelsets. Whether you're tackling steep climbs or cruising urban streets, this freewheel provides the performance you need to stay confident on every ride.
Style & Aesthetics:
Featuring a sleek silver and black finish, the Sunrace MF-M2A complements a variety of bike styles-from classic to modern. Its minimalist design not only looks great but contributes to a clean, streamlined drivetrain.
Key Features & Benefits:
- High-quality steel sprockets with polymer spacers for durability and quiet operation
- 6-speed gear range (14-28T) suitable for diverse terrains and riding conditions
- Lightweight 433g design for efficient performance
- Compatibility with Shimano-compatible hubs, including MF-TZ series
- Easy installation and smooth shifting performance
Optimize your bike's shifting performance with the Sunrace MF-M2A Freewheel - the perfect choice for riders seeking durability, versatility, and enhanced ride quality. Whether upgrading an existing bike or building a new one, this freewheel ensures dependable performance across all your adventures.
- Precision-engineered steel rings combined with polymer spacers provide durable, low-friction performance for consistent gear shifting on mountain bikes and cruisers.
- Compatible with Shimano 6-speed drivetrains, the Sunrace MF-M2A Freewheel offers reliable, smooth gear transitions, making it an ideal upgrade for urban, trail, or hybrid cycling.
- Lightweight at only 433 grams, this freewheel enhances cycling efficiency without adding unnecessary weight, ensuring a responsive ride on any terrain.
- Featuring a 14-28t gear range, the Sunrace MF-M2A delivers versatile gearing options suitable for climbing hills or maintaining high speeds on flats, enhancing your overall cycling experience.
- Constructed with high-quality materials and innovative design, this freewheel combines style with durability, making it a perfect choice for cyclists seeking performance and longevity in their drivetrain components.
| Specification | Value |
|---|---|
| Manufacturer | SUNRACE |
| Manufacturer Part No. | MFM2A.6DS0.1S6.BX.C |
| Universal Product Code | 4711264332979 |
| Invoice Description | FW MULTI SUNRACE MFM2A 14-28 6s INDEX UCP/BK |
| Shipping Weight | 1.04 lbs. |
| Package Dimensions | 5.55 x 4.75 x 1.55 |
| HTS Number | 8714.93.7030C2 |
| Country of Origin | CHINA |
| Gears | 14-28t |
| Speeds | 6sp |
| Color | Silver/Black |
- Supplier:
- JBI
- Color:
- Siilver
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
