About The Product
- Prime 9 Technology is a counter-intuitive philosophy based on the less is more theory - it embraces range without adding complexity
- Compatible with standard HG style freehub bodies
- Ultra-wide ratio with consistent progression
- Cold rolled steel and aluminum construction
- Cogs pinned to lightweight spiders
Experience Unmatched Versatility with the Box Components Box Three Prime 9 Cassette 11-50t
Optimize your cycling performance with the innovative Box Components Box Three Prime 9 Cassette - a high-performance, ultra-wide ratio bicycle cassette engineered for durability, lightweight efficiency, and seamless gear progression. Designed for both traditional mountain biking and e-bike applications, this 9-speed cassette provides an expansive gear range of 11-50t, enabling riders to conquer steep climbs and fast descents with confidence.
Materials & Engineering Excellence
Constructed from high-quality stamped steel cogs, each tooth is precisely formed for durability and reliability. The larger cogs are pinned to lightweight alloy spiders, featuring strategically placed weight-reducing holes to optimize rotational efficiency without compromising strength. This meticulous combination of materials ensures the cassette withstands demanding riding conditions while maintaining a lightweight profile-total weight only 550 grams.
Advanced Components & Technology
The Box Three Prime 9 cassette employs Prime 9 technology, offering the expansive gear range of a 12-speed drivetrain but with fewer gears, resulting in easier, more precise shifting. The cogs are compatible with standard Shimano HG freehub bodies, making installation straightforward and compatible with a broad range of bikes. Fewer parts translate to enhanced durability and simplified maintenance, perfect for serious riders seeking long-lasting performance.
Style & Use Case
Featuring a sleek ED Black finish, this cassette blends aesthetic appeal with functional robustness. Its wide ratio facilitates optimal cadence and torque across varied terrains, making it ideal for mountain bikers, gravel riders, and e-bike enthusiasts seeking reliable performance on all trail types. Whether you're tackling rugged trails, steep climbs, or high-speed descents, the Box Three Prime 9 cassette delivers smooth, consistent gear shifts and exceptional range.
Innovative & Differentiating Features
- Ultra-wide gear ratio of 11-50t for versatile riding conditions
- Steel cogs with alloy spiders for strength and weight savings
- Pinned cogs with weight-reducing holes for enhanced performance
- Compatible with standard Shimano HG freehub bodies
- Designed for 9-speed drivetrains and e-bike use
- Durable construction with a sleek black finish
Upgrade your bike's drivetrain with the Box Components Box Three Prime 9 Cassette - engineered for performance, built for durability, and designed to elevate your riding experience. Conquer every trail with confidence, thanks to this innovative, high-performance cassette.
- High-performance 9-speed cassette featuring an ultra-wide 11-50T gear range, ideal for versatile mountain biking and e-bike applications.
- Constructed with durable stamped steel cogs and lightweight alloy spiders, providing enhanced strength, corrosion resistance, and long-lasting reliability in challenging off-road conditions.
- Innovative Prime 9 technology delivers precise and consistent gear progressions comparable to 12-speed drivetrains, reducing the number of gears needed for seamless shifting.
- Designed for standard Shimano HG freehub bodies, this cassette offers easy installation and compatibility with a broad range of mountain bikes and e-bikes.
- Stylish matte ED Black finish with weight-saving holes on cogs optimizes aesthetic appeal and minimizes weight to improve overall bike performance and agility.
| Specification | Value |
|---|---|
| Manufacturer | BOX COMPONENTS |
| Manufacturer Part No. | BX-CS3-P9A1150-BK |
| Universal Product Code | 639266097341 |
| Invoice Description | FH CASS BOX THREE PRIME 9 11-50 BK 9s |
| Shipping Weight | 1.80 lbs. |
| Package Dimensions | 8.58 x 8.4 x 2 |
| Country of Origin | TAIWAN |
| Range | 11-50t |
| Gears | 9sp |
| Cogs | 11-13-16-20-24-30-36-42-50 |
| Color | Black |
- 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
