About The Product
- 9-speed road rear derailleur
- High polished aluminum outer link
- Composite, aluminum and steel construction
- SHIMANO Equivalent RD-3500
Upgrade your cycling performance with the Sunrace RD-R91 Rear Derailleur - the perfect blend of reliable engineering, innovative materials, and versatile 9-speed compatibility. Designed for road bikers seeking precision shifting and durability, this rear derailleur is engineered to deliver smooth gear transitions on all terrains.
Materials & Construction:
Constructed from a high-performance composite blend of aluminum, steel, and engineered polymer, the Sunrace RD-R91 offers an optimal balance of lightweight sophistication and robust strength. The high-polished aluminum outer link enhances durability while providing a sleek aesthetic, making it ideal for both competitive riding and everyday cycling.
Performance & Engineering:
Built for seamless 9-speed gear shifting, the RD-R91 features a 2:1 gear ratio for precise and responsive derailleur movement. Its mid-cage design accommodates cassettes up to 34T, ensuring compatibility with a wide range of road bike setups. Weighing only 279 grams, this derailleur optimizes weight savings without compromising stability or performance, making it a critical upgrade for riders seeking efficiency and reliable handling.
Components & Technology:
Featuring advanced engineering with composite, aluminum, and steel components, the RD-R91 delivers enhanced durability, corrosion resistance, and smooth operation. Its direct mount design simplifies installation and maintenance, while the high-quality construction ensures long-lasting performance under various riding conditions.
Style & Use Case:
With a sleek, polished aluminum finish and a versatile mid-cage configuration, the Sunrace RD-R91 is perfect for road cycling enthusiasts, endurance riders, and commuters alike. Whether you're tackling hilly terrains, flat stretches, or participating in spirited group rides, this derailleur provides consistent, responsive shifting that enhances your riding experience.
Innovative Features & Differentiators:
Compared to traditional derailleurs, the Sunrace RD-R91 offers cutting-edge materials and a refined design for superior weight-to-strength ratio. Its compatibility with Shimano 9-speed systems makes it a popular choice for upgrading existing setups or building custom bikes with high-performance components.
Elevate your bike's shifting efficiency with the Sunrace RD-R91 Rear Derailleur - a reliable, lightweight, and durable solution engineered for serious riders seeking precision, style, and lasting value.
- Enhanced durability with a rugged composite, aluminum, and steel construction, ensuring reliable performance on demanding road rides.
- Advanced engineering features a mid-gear mounting and a 9-speed compatibility, providing smooth, precise shifting across varied terrains.
- High-polished aluminum outer link not only offers a sleek, stylish look but also reduces weight for improved pedal response and handling.
- Designed as a direct-fit replacement with performance comparable to Shimano RD-3500, making it an ideal upgrade for road cyclists seeking durability and consistent shifting.
- Optimized for 39-chain wrap and a maximum cassette size of 34 teeth, this derailleur delivers versatile gearing suitable for both racing and recreational road cycling.
| Specification | Value |
|---|---|
| Manufacturer | SUNRACE |
| Manufacturer Part No. | RDR91.LD00.0S0 |
| Universal Product Code | 4710944242850 |
| Invoice Description | DER SUNRACE RDR91 GS 9s DIRECT SL |
| Shipping Weight | 0.91 lbs. |
| Package Dimensions | 6.9 x 4.15 x 3.65 |
| HTS Number | 8714.99.5000 |
| Country of Origin | TAIWAN |
| Speed | 9sp |
| Max | 34 |
| Wrap | 39 |
| Cage/Mount | Mid |
| Ratio | 2to1 |
| Color | SIL |
| Wgt | 279g |
| Type | Mechanical |
- 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
