About The Product
- Designed to perfectly compliment KMC`s line of chains
- Carefully designed lifting and lowering shifting ramps ensure improved shifting, efficiency and stability
- Optimised gearing results in fewer large jumps in tooth count for smooth, predictable progressive shifting
- Shimano HG compatible interface
Upgrade Your Mountain Biking with the KMC GMX11-2 11-42t Cassette - Precision, Durability, and Versatility
Optimize your drivetrain performance with the KMC GMX11-2 Cassette, designed specifically for aggressive mountain biking, trail riding, and all-mountain adventures. Engineered with advanced materials and precise construction, this 11-speed cassette offers seamless shifting, enhanced longevity, and compatibility with high-performance KMC chains.
Materials & Engineering Excellence
Constructed from high-strength steel, the KMC GMX11-2 ensures exceptional durability under demanding riding conditions. Its robust build resists wear and corrosion, making it ideal for mountain bikers seeking reliability on rugged terrains. The meticulously designed ascent and descent ramps facilitate smooth chain movement, minimizing drivetrain friction and maximizing acceleration efficiency.
Components & Technology
The GMX11-2 features a versatile 11-42t gear range, perfect for conquering steep climbs and sprinting on flat sections. Equipped with optimized lifting and lowering ramps, this cassette delivers precise, quick shifts across all gears. Compatible with Shimano HG freehub bodies (8-11 speed), it guarantees reliable engagement and smooth power transfer. The lightweight design (618g) combines strength with performance, ensuring your setup remains agile on demanding rides.
Style & Use Case
Finished in sleek black, the KMC GMX11-2 adds a professional, aggressive aesthetic to any mountain bike build. Whether you're tackling technical descents, climbing challenging trails, or exploring mixed terrains, this cassette provides the versatility and confidence you need to push your limits. Its compatibility with KMC e11, X11, X11 EL, and X11 SL chains ensures a cohesive drivetrain system for riders seeking maximum performance.
Innovative & Differentiating Features
- Precision Machining & Matching Compatibility: Designed to perfectly match KMC chains, reducing friction and extending component lifespan.
- Advanced Ramp Design: Unique lifting and lowering ramps improve shifting performance, stability, and overall drivetrain efficiency.
- Wide Gear Range: The 11-42t setup offers optimal gear options for varied terrain, empowering riders to conquer steep climbs and fast descents with ease.
- Compatibility & Versatility: Suitable for modern 11-speed mountain bikes with Shimano HG freehubs, supporting a broad range of riding styles and setups.
Key Specifications:
- Gear Range: 11-42 teeth
- Cogs: 11, 13, 15, 17, 19, 21, 24, 28, 32, 36, 42
- Drivetrain Compatibility: 11-speed Shimano HG freehub
- Material: High-strength steel
- Weight: 618 grams
- Color: Black
- Model: GMX11-2
Maximize your mountain biking experience with the KMC GMX11-2 Cassette-built for durability, engineered for performance, and designed to keep you riding at your best. Perfect for trail warriors, enduro racers, and mountain biking enthusiasts seeking reliable and precise drivetrain components.
- High-precision KMC GMX11-2 11-42T Cassette featuring 11 gear ratios for versatile mountain biking and gravel riding performance
- Constructed from durable high-strength steel, this cassette offers exceptional longevity and resistance to wear under demanding riding conditions, ensuring reliable performance on extended rides and challenging terrains
- Optimized for Shimano HG freehub bodies, the GMX11-2 cassette delivers seamless integration with 11-speed drivetrain systems, providing precise gear indexing and smooth shifting across an extensive 11-42 tooth range
- Innovative ascent and descent ramps are meticulously engineered to improve chain engagement, reduce shifting effort, and enhance overall drivetrain efficiency, making it ideal for aggressive climbing and rapid descents
- Stylish matte black finish combined with advanced component technology makes this cassette suitable for both performance-oriented riders and style-conscious cyclists seeking reliable, high-performance bike accessories
| Specification | Value |
|---|---|
| Manufacturer | KMC |
| Manufacturer Part No. | CSTE00530 |
| Universal Product Code | 766759000530 |
| Invoice Description | FH CASS KMC GMX11-2 11-42 BK 11s |
| Shipping Weight | 1.78 lbs. |
| Package Dimensions | 9.55 x 9 x 1.85 |
| Country of Origin | TAIWAN |
| Range | 11-42t |
| Gears | 11sp |
| Cogs | 11,13,15,17,19,21,24,28,32,36,42 |
| Color | Black |
| Model | GMX11-2 |
- 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
