About The Product
- 12-speed wide range MTB cassette for XD freehub bodies
- 7075 aluminum 42t and 50t cogs
- Alloy spiders, locking and spacers
Boost your bike's performance with the SunRace MZ91X 12-Speed XD Cassette - engineered for serious riders seeking reliability, durability, and a wide gear range. This premium cassette features a 10-50t gear ratio, providing optimal gear selection for both aggressive mountain trails and challenging climbs, making it the perfect upgrade for your 12-speed drivetrain.
Materials & Build Quality:
Constructed from high-quality A7075 aluminum, the SunRace MZ91X cassette offers a lightweight yet robust design that withstands rigorous riding conditions. The alloy spiders, lockring, and spacers contribute to reduced weight without sacrificing strength, ensuring smooth power transfer and enhanced durability over time.
Performance & Engineering:
Designed for precise shifting and enhanced drivetrain efficiency, this cassette features a wide ratio gearing system with cogs ranging from 10T to 50T. The 12-speed configuration ensures seamless gear changes, maximizing traction and control on varied terrains. Its all-metal construction and engineered tooth profiles promote long-lasting performance even under high torque loads.
Components & Technology:
Specialized for SRAM XD driver bodies, the SunRace MZ91X integrates smoothly with XD compatible hubs for reliable engagement. Alloy components, including the lockring and spacers, reduce rotational weight, improving overall acceleration and handling. The cassette's design supports aggressive riding styles, whether XC, enduro, or trail riding.
Style & Use Case:
Sporting a sleek Black Chrome finish, this cassette not only performs impeccably but also adds a modern, premium look to your bike. Ideal for mountain bikers and off-road enthusiasts, its wide gearing ratio is perfect for tackling steep climbs and fast descents alike. Suitable for a variety of cycling disciplines that demand versatility and durability.
Innovative Features:
The combination of alloy construction and wide gear ratio design sets the SunRace MZ91X apart, offering a lightweight solution without compromising strength. Its compatibility with XD driver bodies makes it an excellent choice for progressive 12-speed mountain bikes looking for a high-performance upgrade.
Upgrade your drivetrain today with the SunRace MZ91X 12-Speed XD Cassette - the ultimate choice for demanding riders who want durability, performance, and a versatile gear range all in one sleek package.
- Optimized for durability and performance, the SunRace MZ91X 12-Speed Cassette is crafted from high-quality A7075 aluminum, offering excellent strength-to-weight ratio and corrosion resistance for mountain biking and aggressive trail riding.
- Designed with a wide gear ratio from 10 to 50 teeth, this cassette provides versatile gearing for steep climbs and fast descents, enhancing your riding efficiency across diverse terrains.
- Compatible with SRAM XD driver bodies, the SunRace MZ91X features alloy spiders, lockring, and spacers to reduce weight while maintaining structural integrity, ensuring smooth, reliable shifting under demanding conditions.
- The sleek Black Chrome finish not only offers superior corrosion resistance and a modern aesthetic but also provides extra durability against mud, grit, and weather elements, making it ideal for all-mountain and enduro cycling.
- Equipped with precision-engineered components and innovative 12-speed technology, the SunRace MZ91X Cassette delivers seamless gear transitions and consistent performance, empowering riders to conquer challenging trails with confidence.
| Specification | Value |
|---|---|
| Manufacturer | SUNRACE |
| Manufacturer Part No. | CSMZ91X.WT5R.OS0.BX |
| Universal Product Code | 4710944263572 |
| Invoice Description | FH CASS SUNRACE CSMZ91X 10-50 BK/CP 12s |
| Shipping Weight | 1.48 lbs. |
| Package Dimensions | 9.45 x 8.55 x 2.2 |
| HTS Number | 8714.93.7030 |
| Country of Origin | TAIWAN |
| Range | 10-50t |
| Gears | 12sp |
| Cogs | 10,12,14,16,18,21,24,28,32,36,42,50 |
| Color | Black/Chrome |
| Weight | 579g |
- 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
-
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
