About The Product
- The Box Three E-Bike Cassette offers high gears with more teeth to withstand the rigors of modern E-Bike riding
- E-Bike optimized, steel cog and spider construction for improved durability
- Ultra-wide ratio with consistent progression
- Compatible with HG freehub bodies
- Intended for use with Box Prime 9 drivetrains only - may not be compatible with other 9 speed drivetrains
Enhance your eBike's performance with the Box Components Box Three Prime 9 Cassette 12-50t, a versatile and durable drivetrain upgrade designed for serious riders seeking an expansive gear range and reliable shifting. Crafted with precision engineering and innovative technology, this 9-speed cassette offers all-season versatility, making it an ideal choice for mountain biking, gravel riding, or urban eBike commuting.
Materials & Construction
Constructed from high-grade steel, each cog in the Box Three Prime 9 cassette is stamped for strength and durability. The larger gears feature pinned alloy spiders, reducing weight without compromising toughness. Additionally, weight-saving holes on the cogs optimize rotational efficiency, providing a lightweight profile suitable for demanding rides.
Performance & Engineering
Designed for seamless, consistent gear progression across a wide 12-50T range, the Prime 9 technology delivers the same gear range as a 12-speed drivetrain but with fewer shifts. The cassette is rated for eBike use, ensuring durability under high torque loads and prolonged riding sessions. Its construction minimizes parts, lowers weight, and enhances overall longevity-perfect for riders seeking reliability and performance.
Components & Technology
Equipped with a standard Shimano HG freehub body, the Cassette is compatible with most MTB and eBike hubs. The cogs are pinned to lightweight alloy spiders, combining strength and reduced rotational mass. This design ensures smooth shifting, increased durability, and easy installation, making it an excellent upgrade for bike enthusiasts and daily commuters.
Style & Use Case
Presented in sleek black, the Box Three Prime 9 Cassette blends effortlessly with any bike setup, offering a clean, professional look. Its ultra-wide gear ratio is perfect for tackling steep climbs, fast descents, or mixed terrain, providing you with the right gear at the right time. Ideal for eBike riders, mountain bikers, gravel grinders, and urban cyclists who demand a reliable, all-around drivetrain component.
Innovative Features
- Rated for high-torque eBike applications
- Wide 12-50T gear range for versatile riding conditions
- Fewer gears for simpler, quicker shifts, mimicking 12-speed range complexity
- Steel cogs with alloy pinning for optimal weight-to-strength ratio
- Precision-machined design with weight-reducing holes for efficiency
Upgrade your bike with the Box Components Box Three Prime 9 Cassette 12-50t for exceptional durability, expansive gear options, and smooth performance across all terrain. Unlock your bike's full potential today with this high-performance, SEO-optimized drivetrain component.
- High-performance 9-speed cassette built with durable steel cogs and alloy spiders for reliable shifting and long-lasting use.
- Featuring ultra-wide 12-50 tooth range with consistent gear progression, perfect for versatile climbing and cruising on diverse terrains.
- Designed specifically for eBike applications, this cassette offers optimized gear ratios and enhanced durability to handle higher torque and electric power.
- Constructed with lightweight cogs featuring weight-reducing holes, reducing overall bike weight without compromising strength or performance.
- Compatible with Shimano HG freehub bodies, this all-around cassette combines innovative pinned cog technology and reduced part count for smoother shifts, increased lifespan, and streamlined maintenance.
| Specification | Value |
|---|---|
| Manufacturer | BOX COMPONENTS |
| Manufacturer Part No. | BX-CS3-P9A1250-BK |
| Universal Product Code | 616043832852 |
| Invoice Description | FH CASS BOX THREE PRIME 9 12-50 E-BIKE BK 9s |
| Shipping Weight | 1.73 lbs. |
| Package Dimensions | 8.5 x 8.65 x 2.1 |
| Country of Origin | TAIWAN |
| Range | 12-50t |
| Gears | 9sp |
| Cogs | 12-14-16-18-22-28-34-42-50 |
| 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
-
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
