About The Product
- 11-speed wide range cassette
- Hi-Tensile steel construction with engineering grade polymer spacers
- 6 sprockets on 2 alloy spiders
- Steel lockring
Upgrade your mountain biking or trail riding with the Sunrace CS-MS 11-Speed Cassette 11-51t, a versatile and high-performance drivetrain component designed for avid cyclists seeking optimal gear ranges. Crafted from premium materials, this wide-range cassette offers exceptional durability, smooth shifting, and reliable performance across various terrains.
Materials & Construction:
The Sunrace CS-MS 11-51t features durable high-tensile steel construction that withstands rigorous riding and harsh conditions. Engineered grade polymer spacers reduce weight while maintaining strength, ensuring smooth gear transitions and reducing noise during rides. The steel lockring provides secure attachment to your hub for long-lasting performance.
Performance & Engineering:
Designed for an 11-speed drivetrain, this cassette boasts a wide gear range from 11 to 51 teeth, allowing you to conquer steep climbs and sprint on flat sections with ease. The precision engineering of six sprockets mounted on two robust alloy spiders ensures consistent power transfer and minimized wear, delivering smooth and reliable shifting across all gears.
Components & Technology:
Utilizing a combination of steel sprockets and alloy spiders, the Sunrace CS-MS cassette balances strength and weight savings. The inclusion of engineered polymer spacers reduces overall weight without sacrificing durability, enhancing rider confidence during demanding trails or weekend adventures.
Style & Use Case:
Ideal for mountain bikers, trail riders, and gravel enthusiasts, this cassette is perfect for bikes requiring a wide gear range for both steep climbs and fast descents. Its sleek black finish provides a modern look that complements any bike setup, whether you're upgrading your existing drivetrain or building a new mountain bike.
Innovative Features & Benefits:
- Wide 11-51t gear range for versatile terrain handling
- High-performance steel and polymer construction for durability and weight savings
- Seamless compatibility with 11-speed drivetrains
- Secure steel lockring for robust attachment
- Perfect for aggressive trail riding, enduro, and gravel adventures
Enhance your cycling experience with the Sunrace CS-MS 11-Speed Cassette 11-51t - the ultimate choice for riders seeking durability, wide-range gearing, and smooth shifting in one lightweight, engineered package.
- High-performance 11-speed wide range cassette featuring a 11-51t gear ratio for versatile climbing and speed capabilities.
- Constructed with durable Hi-Tensile steel and engineered grade polymer spacers, ensuring long-lasting performance and smooth shifting under demanding riding conditions.
- Includes 6 precision sprockets mounted on 2 lightweight alloy spiders and a steel lockring, providing optimal strength, stability, and reliability for aggressive trail or road riding.
- Designed for seamless compatibility with 11-speed drivetrains, the Sunrace CS-MS 11-51t cassette offers easy installation and maintenance, making it ideal for both enthusiasts and competitive cyclists.
- Innovative engineering delivers a superior gear range with smooth transitions, boosting efficiency whether tackling steep climbs or high-speed descents across various terrains.
| Specification | Value |
|---|---|
| Manufacturer | SUNRACE |
| Manufacturer Part No. | CSMS8.EA10.ES0.BX |
| Universal Product Code | 4710944267556 |
| Invoice Description | FH CASS SUNRACE CSMS 11-51 BK 11s |
| Shipping Weight | 1.55 lbs. |
| Package Dimensions | 9 x 8.3 x 1.6 |
| HTS Number | 8714.93.7030 |
| Country of Origin | TAIWAN |
| Range | 11-51t |
| Gears | 11sp |
| Cogs | 11,13,15,18,21,24,28,33,39,45,51 |
| Color | Black |
- 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
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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
