About The Product
- All KMC chains include either a missing link or replacement pins
- Inner plate chamfering and Z-bridge outer plate improves shifting
- Rust Buster coating helps prevent corrosion and rust
Upgrade your bike's drivetrain with the KMC Z8.1 RB Rustbuster Chain - the ultimate 8-speed chain designed for durability, smooth shifting, and corrosion resistance. Crafted with premium materials and innovative engineering, this high-performance chain is ideal for road, mountain, hybrid, and internal geared hub bikes, ensuring reliable performance in all conditions.
Materials & Construction:
Made from corrosion-resistant, full-nickel plated steel, the KMC Z8.1 RB offers outstanding anti-rust protection, perfect for riding in wet or humid environments. The chamfered inner plates reduce friction, enabling seamless, fast gear shifts, while Bulls-eye rivets enhance the chain's strength and reliability. Its lightweight yet durable design ensures long-lasting performance.
Performance & Engineering:
Engineered for 5-8 speed drivetrains, the Z8.1 RB features high pin power and reinforced durability, providing a quieter and smoother riding experience. The anti-drop design minimizes chain derailments, and the crush-resistant construction ensures consistent performance over thousands of miles. The chain's compatibility with standard 1/2 x 3/32 chains and the included reusable master link simplify installation and maintenance.
Components & Technology:
Equipped with Z-bridge outer plates for extended compatibility across a wide range of bikes, this chain supports internal geared hubs and multiple drivetrain configurations. Its fully bushing-less design reduces weight and increases efficiency, making it an excellent choice for both casual riders and competitive cyclists.
Style & Use Case:
In sleek gray finish, the KMC Z8.1 RB combines functionality with understated style. Whether commuting, mountain biking, or touring, this versatile chain is built to withstand harsh weather conditions and demanding riding styles. Its anti-rust coating ensures longevity, especially in challenging environments like rain or mud.
Innovative & Differentiating Features:
- Rustbuster anti-corrosion coating for superior rust protection
- Chamfered inner plates facilitate fast, smooth gear shifts
- Bulls-eye rivets enhance strength and durability
- Anti-drop design for secure riding experience
- Extended compatibility with Z-bridge outer plates
- Reusable master link simplifies installation and servicing
Item Specifications:
- Links: 116
- Drivetrain Speed: 8-speed
- Material: Full Nickel-Plated Steel (DB/HGC)
- Color: Gray
- Connection Type: Reusable Master Link
- Compatibility: 5-8 speed bikes, internal geared hubs
- Model: Z8.1 Rust Buster (Z-51RB)
Upgrade your bicycle's drivetrain with the KMC Z8.1 RB Rustbuster Chain - engineered for durability, efficiency, and corrosion resistance, ensuring a smooth ride mile after mile. Perfect for cyclists seeking reliable performance and long-lasting quality.
- Enhanced rust resistance with KMC Z8.1 RB Rustbuster Chain, featuring a durable full-nickel plating and anti-rust coating for reliable performance in all weather conditions.
- Optimized for 5-8 speed drivetrain systems, this high-quality chain includes chamfered inner plates and Bulls-eye rivets, ensuring smooth, fast, and precise shifting on internal geared hubs and multi-speed bikes.
- Constructed with reinforced durability and high pin power, the Z8.1 chain reduces stretch and enhances longevity, providing a quiet, smooth riding experience for daily commuting and recreational cycling.
- Featuring an anti-drop design and extended compatibility through Z-bridge outer plates, this chain offers easy installation, reusable master link connection, and excellent performance for a range of cycling styles.
- Made from premium materials (DB/HGC), the 116-link gray chain is engineered to withstand tough riding conditions, making it the ideal choice for cyclists seeking reliability, performance, and corrosion resistance.
| Specification | Value |
|---|---|
| Manufacturer | KMC |
| Manufacturer Part No. | CN51511 |
| Universal Product Code | 766759951511 |
| Invoice Description | CHAIN KMC Z8.1 INDEX 6/7/8s RUST BUSTER SL 116L |
| Shipping Weight | 0.75 lbs. |
| Package Dimensions | 4.05 x 4 x 0.9 |
| Country of Origin | TAIWAN |
| Speeds | 5/6/7/8sp |
| Size | 1/2x3/32 |
| Links | 116L |
| Material | DB/HGC |
| Color | Silver |
- 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
