About The Product
- Unidirectional carbon BMX rim designed for use with disc brake or as a brakeless front wheel
- Full Toray T700 carbon fiber composite material
- Drilled for both Presta and Schrader with included plug for unused valve hole
- 220lb rider weight limit
- Race use only
Upgrade your BMX ride with the Alienation Acme UD Carbon Alienation 20in Wheel-built for serious performance, lightweight durability, and sleek style. Crafted from advanced materials and engineered for racing, this high-performance rim is the perfect choice for riders seeking ultimate control and speed.
Materials & Engineering
Constructed from full Toray T700 carbon fiber composite, the Acme UD Carbon wheel offers exceptional strength-to-weight ratio, ensuring lightweight reliability for intense BMX racing or trick riding. The unidirectional (UD) carbon design enhances torsional stiffness and reduces weight, providing superior responsiveness and agility. Double-wall construction adds durability and impact resistance, ideal for high-stress racing environments.
Performance & Components
Designed for performance-focused riders, this 20-inch rim features a 28mm exterior width for optimal tire support and stability. It's drilled for both Presta and Schrader valves, with a handy plug included for unused valve holes, providing versatile setup options. The rim's tubeless compatibility reduces the risk of flats and allows for lower tire pressures, improving grip and ride comfort. With a rider weight limit of 220lb, it's engineered for aggressive riding styles and race scenarios.
Technology & Innovation
The Acme UD Carbon rim is designed for use with disc brakes or as a brakeless front wheel, offering versatile braking options for various BMX disciplines. Its precision-engineered 390mm Effective Rim Diameter (ERD) ensures perfect spoke alignment and tension. The rim's lightweight profile and advanced composite materials translate into faster acceleration, better handling, and superior cornering.
Style & Use Case
With a sleek black finish, the Acme UD Carbon Alienation wheel is as stylish as it is functional. Whether powering through BMX races, stunt tricks, or aggressive street riding, this rim delivers exceptional performance in all competitive and leisure riding scenarios. Its tubeless compatibility and lightweight design make it the preferred choice for performance enthusiasts.
Key Features Summary:
- Full Toray T700 carbon fiber for lightweight strength
- Unidirectional (UD) carbon layup for maximum stiffness
- 20-inch diameter with 28mm width for tire support
- Drilled for Presta and Schrader valves; includes valve hole plug
- Tubeless compatible for improved traction and flat resistance
- Designed for disc brake or brakeless front use
- Double-wall construction enhances durability
- Lightweight, race-grade engineering with a 220lb rider weight limit
Ride faster, lighter, and more confidently with the Alienation Acme UD Carbon Alienation 20in Wheel-an elite choice for BMX racers and stunt riders seeking top-tier performance and cutting-edge technology.
- Unidirectional carbon advanced BMX rim crafted from full Toray T700 carbon fiber composite for superior strength, lightweight performance, and durability.
- Designed for versatile cycling disciplines, this 20-inch rim is optimized for disc brake applications or as a brakeless front wheel, offering exceptional control and braking power.
- Features drilled holes compatible with Presta and Schrader valves, with an included plug for seamless valve customization, making maintenance and inflation quick and hassle-free.
- Built to support rider weights up to 220lb, this race-grade rim combines lightweight engineering with robust construction for competitive cycling and high-performance riding.
- Tubeless compatible with a 28mm width and 390mm effective rim diameter, ensuring excellent traction, reduced rolling resistance, and a sleek, aerodynamic profile for aggressive cycling use.
| Specification | Value |
|---|---|
| Manufacturer | ALIENATION |
| Universal Product Code | 888571077214 |
| Invoice Description | RIM AN (AM) 20 406x21 ACME UD CARBON TBLS DISC 28 BK |
| Shipping Weight | 0.57 lbs. |
| Package Dimensions | 16.23 x 1.1 x 16.23 |
| HTS Number | 8714.92.1000C2 |
| Country of Origin | CHINA |
| Size | 20in |
| Brand | Alienation |
| Model | Acme UD |
| ISO | 406 |
| Width ID | 21 |
| Width OD | 28 |
| Profile | 20 |
| Wall | Dbl |
| Color | Carbon |
| Hole Count | 28 |
| Valve | PV/SV |
| Weight | 260g |
| ERD | 390 |
| Tire Compatibility | Tubeless Compatible |
| Search Color | Carbon |
| Spoke Size | 14g |
- 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
-
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
