About The Product
- Wide ratio cassette with 5 steel sprockets on 2 steel spider carriers with polymer spacers
- Featuring Sunrace`s Fluid Drive Plus technology for precsion shifting
Upgrade Your Cycling Experience with the Sunrace CS-MS2 10-Speed 11-51T Cassette
Optimize your mountain biking or gravel cycling setup with the high-performance Sunrace CS-MS2 10-Speed Cassette, engineered for durable, precise shifting and unbeatable versatility. Crafted with premium materials, this wide-range cassette features a progressive 11-51T gear ratio designed to tackle steep climbs and fast descents alike, making it ideal for trail riders, Enduro enthusiasts, and adventure cyclists seeking reliable performance across diverse terrains.
Materials & Performance:
Constructed with five robust steel sprockets mounted on two steel spider carriers, the Sunrace CS-MS2 ensures exceptional durability and longevity, even under demanding riding conditions. Polymer spacers contribute to lightweight design and smooth operation, reducing fatigue during long rides. Whether ascending mountains or conquering technical trails, this cassette delivers consistent power transfer and minimal wear.
Components & Technology:
Equipped with Sunrace's innovative Fluid Drive Plus technology, the CS-MS2 guarantees precise, responsive shifting across all gears. This advanced engineering minimizes chain skip and maintains optimal chain engagement for a seamless ride. Designed for compatibility with 10-speed drivetrains, it provides a wide gear range that enhances climbing efficiency and top-end speed, perfect for versatile cycling disciplines.
Style & Use Case:
Featuring a sleek black finish, the Sunrace CS-MS2 cassette complements a variety of bicycle setups with its modern, minimalist aesthetic. Its wide ratio (11-51T) makes it suitable for mountain bikes, gravel bikes, and touring bikes, empowering riders to confidently handle a broad spectrum of terrains and riding styles. Whether you're mountain biking, gravel grinding, or bikepacking, this cassette elevates your drivetrain's performance.
Key Features:
- Wide gear ratio: 11-51T for maximum versatility across climbs and descents
- 10-speed compatible with precise, fluid shifting thanks to Fluid Drive Plus technology
- Durable steel sprockets and spider carriers for long-lasting performance
- Lightweight polymer spacers for reduced weight and smooth operation
- Compatible with most 10-speed mountain and gravel bikes
Elevate your cycling setup with the Sunrace CS-MS2 10-Speed Cassette-designed for riders who demand reliability, precision, and versatility on every ride. Optimize your drivetrain today for smoother shifts, increased performance, and unstoppable adventure.
- High-performance 10-speed cassette designed for versatile trail and mountain biking with an ultra-wide 11-51t gear range to conquer steep climbs and fast descents.
- Constructed with durable steel sprockets on steel spider carriers, featuring polymer spacers for reduced weight and enhanced durability during rough rides.
- Equipped with Sunrace's innovative Fluid Drive Plus technology, ensuring smooth, precise shifting across the entire gear range for a seamless riding experience.
- Crafted for aggressive off-road use, this wide ratio cassette provides optimal torque distribution and gear accessibility, ideal for enduro, trail, and mountain biking enthusiasts.
- Stylish black finish with a robust, reliable design, making it a perfect upgrade for riders seeking durability, performance, and modern engineering in their drivetrain system.
| Specification | Value |
|---|---|
| Manufacturer | SUNRACE |
| Manufacturer Part No. | CSMS2.TA10.ES0.BX |
| Universal Product Code | 4710944268331 |
| Invoice Description | FH CASS SUNRACE CSMS2 11-51 BK 10s |
| Shipping Weight | 1.60 lbs. |
| Package Dimensions | 8.4 x 8.2 x 1.7 |
| HTS Number | 8714.93.7030 |
| Country of Origin | TAIWAN |
| Range | 11-51t |
| Gears | 10sp |
| Cogs | 11,13,15,18,21,23,28,33,45,51 |
| Color | Black |
| Weight | 641g |
- 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
