About The Product
- Wide ratio cassettes
- 6 sprockets on 2 alloy spider carriers
Upgrade your mountain biking experience with the SunRace MX8 11-Speed Cassette - the perfect wide-range drivetrain component engineered for durability, lightweight performance, and seamless shifting. Designed to meet the demands of aggressive trail riding and challenging terrains, this cassette offers exceptional gear versatility with an 11-42T gear range optimized for steep climbs and fast descents.
Materials & Construction:
Constructed with precision, the SunRace MX8 cassette features a lightweight yet durable 7075 aluminum largest cog, providing enhanced strength without added weight. The remaining cogs are crafted from high-quality steel, ensuring long-lasting performance under rugged riding conditions. The assembly includes six cogs mounted on two aluminum spiders, delivering a balanced combination of strength and weight savings. An aluminum lockring and spacers complete the design, contributing to a sleek, cohesive look and reliable engagement.
Performance & Engineering:
This 11-speed cassette offers a wide gear range from 11 to 42 teeth, enabling cyclists to conquer steep inclines and maintain high speeds on descents. The precise engineering ensures smooth, crisp shifting across all gears, compatible with Shimano HG freehub bodies. The SunRace MX8 is engineered for consistent performance and reliability, making it an ideal upgrade or replacement for serious trail, enduro, and all-mountain riders.
Components & Technology:
Utilizing high-performance materials like aluminum and steel, this cassette is optimized for durability and weight efficiency. The alloy components reduce rotational mass, allowing for quicker acceleration and more responsive handling. The black chrome/metallic silver finish not only enhances the cassette's aesthetics but also offers corrosion resistance and a sleek, modern look.
Style & Use Case:
With its aggressive black chrome finish, the SunRace MX8 cassette complements any mountain bike build. It is perfect for trail riders, enduro enthusiasts, and mountain biking professionals seeking reliable gear performance. The wide-range gearing provides versatile climbing ability and explosive acceleration, making it suitable for challenging trail conditions and technical terrains.
Innovative & Differentiating Features:
The SunRace MX8 combines lightweight engineering with rugged durability. Its compatibility with SRAM and Shimano derailleur systems (requires a longer B-tension screw for Shimano) offers versatile installation options. The wide 11-42T gear range, combined with its strategic use of aluminum and steel components, ensures durability, weight savings, and smooth shifting performance across demanding off-road adventures.
Technical Specifications:
- Gear Range: 11-42T
- Cogs: 11, 13, 15, 17, 19, 21, 24, 28, 32, 36, 42 teeth
- Compatibility: Shimano HG 8-11 Speed Freehub bodies
- Drivetrain Compatibility: 11-speed
- Material: 7075 Aluminum (largest cog), steel (other cogs)
- Weight: 401 grams
- Color: Black with metallic silver finish
- Model Name: CSMX8
Enhance your mountain bike's performance with the SunRace MX8 11-Speed Cassette-designed for durability, precision, and versatile riding. Whether conquering steep climbs or powering through rugged trails, this cassette is your reliable partner for any off-road adventure.
- High-performance 11-speed SunRace MX8 Cassette featuring a wide 11-42t gear range, optimized for versatile mountain biking and trail riding.
- Constructed with lightweight 7075 aluminum for the largest cog and durable steel for all other cogs, delivering a perfect balance of strength and weight savings.
- Compatible with Shimano HG freehub bodies and SRAM derailleurs, ensuring seamless integration with your existing drivetrain setup with optional longer B-tension screw for Shimano compatibility.
- Sleek black chrome/metallic silver finish provides corrosion resistance and a modern, stylish appearance suitable for aggressive mountain biking styles.
- Innovative 6-cog design on 2 aluminum spiders enhances power transfer and reliability, making this cassette ideal for technical climbs, downhill descents, and all-mountain adventures.
| Specification | Value |
|---|---|
| Manufacturer | SUNRACE |
| Manufacturer Part No. | CSMX8.EAYR.OS0.BX |
| Universal Product Code | 4710944248227 |
| Invoice Description | FH CASS SUNRACE CSMX 11-42 BK/RD 11s |
| Shipping Weight | 1.08 lbs. |
| Package Dimensions | 8.05 x 7.2 x 2.15 |
| HTS Number | 8714.93.7030 |
| Country of Origin | TAIWAN |
| Range | 11-42t |
| Gears | 11sp |
| Cogs | 11,13,15,17,19,21,24,28,32,36,42 |
| Color | Black/Red |
| Weight | 465g |
- 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
