About The Product
- 9-speed road cassette
- Super Fluid Drive™ technology
- Steel cogs
- Aluminum lock ring
- ~ 280g
- SHIMANO Equivalent CS-HG50
Upgrade Your Road Performance with the Sunrace CS-R91 12-25t 9-Speed Cassette
Enhance your cycling experience with the Sunrace CS-R91 12-25t 9-Speed Cassette, designed for serious road cyclists seeking reliable gearing, lightweight construction, and seamless performance. Engineered with innovative technology and premium materials, this cassette offers superior acceleration, precise shifts, and durability for both competitive racing and casual rides.
Materials & Construction
Constructed with high-quality steel cogs, the Sunrace CS-R91 ensures exceptional strength and longevity under demanding riding conditions. The aluminum lock ring reduces overall weight, contributing to a lightweight setup (~280g) optimized for high-performance cycling. The use of durable materials guarantees minimal wear and sustained smooth operation over thousands of miles.
Performance & Engineering
Featuring Sunrace's proprietary Super Fluid Drive technology, this cassette delivers incredibly smooth and responsive shifting, reducing drivetrain friction and enhancing energy transfer. The thoughtfully engineered gear ratios (12-13-14-15-17-19-21-23-25) facilitate versatile cadence options, making it ideal for varied terrains and riding styles. Its 9-speed compatibility ensures wide gear range coverage for effortless climbs and rapid accelerations.
Components & Technology
The CS-R91 is compatible with Shimano HG freehub bodies, equivalent to Shimano's CS-HG50 cassette, ensuring seamless integration with a broad range of road and hybrid bikes. Its precise manufacturing and calibrated gear spacing provide consistent, noise-free operation, while the aluminum lock ring simplifies installation and removal for quick adjustments.
Style & Use Case
Designed for serious cyclists and enthusiasts, this cassette combines a sleek, performance-oriented look with functionality suited for both competitive racing and endurance rides. Its compact gear range makes it perfect for riders seeking reliable shifting across diverse terrains-from flat open roads to challenging inclines.
Key Features:
- 9-Speed Road Cassette with versatile gear ratios (12-25t)
- Advanced Super Fluid Drive technology for smooth and efficient shifting
- Steel cogs for durability and longevity
- Lightweight aluminum lock ring reduces weight and facilitates installation
- Compatible with Shimano HG freehub bodies (CS-HG50 equivalent)
- Total weight approximately 280 grams
Maximize your bike's efficiency and gear performance with the Sunrace CS-R91 12-25t Cassette-designed to deliver smooth, reliable shifting, lightweight construction, and exceptional value for serious cyclists. Upgrade your drivetrain today and experience the difference in every ride.
- Enhanced 9-speed road bicycle cassette designed for smooth and precise gear shifting, compatible with Shimano drive systems.
- Constructed with durable steel cogs and an lightweight aluminum lock ring, offering a balance of strength and weight savings for competitive cycling.
- Features Sunrace's innovative Super Fluid Drive technology, delivering seamless gear transitions and increased drivetrain efficiency for aggressive riding and long-distance rides.
- Ideal for road cyclists seeking versatile gear options, with a gear range from 12 to 25 teeth to optimize performance on varied terrain and climbing conditions.
- Weighing approximately 280 grams, this high-performance cassette provides ultimate durability and reliability, making it a perfect upgrade for performance-oriented road biking enthusiasts.
| Specification | Value |
|---|---|
| Manufacturer | SUNRACE |
| Manufacturer Part No. | CSR91.9BQ0.NS1 |
| Universal Product Code | 4710944242010 |
| Invoice Description | FH CASS SUNRACE CSR91 12-25 NIK 9s |
| Shipping Weight | 0.88 lbs. |
| Package Dimensions | 6.6 x 5.7 x 1.95 |
| HTS Number | 8714.93.7030 |
| Country of Origin | TAIWAN |
| Range | 12-25t |
| Gears | 9sp |
| Cogs | 12,13,14,15,17,19,21,23,25 |
| Color | Nickel |
- Supplier:
- JBI
- Color:
- Silver
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
-
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
