About The Product
- Unidirectional full carbon BMX rim
- Carbon friendly Legion brake pads included for peak performance
- 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
Elevate your BMX racing performance with the Alienation Acme UD Carbon 20in Rims with Legion Pads. Designed for serious riders and competitive racing, this high-performance wheel combines advanced materials, precision engineering, and innovative features to deliver exceptional speed, durability, and responsiveness on the track.
Materials & Engineering
Constructed from full Toray T700 carbon fiber composite, the Acme UD Carbon Rims offers unmatched strength-to-weight ratio, ensuring lightweight agility without compromising durability. The unidirectional (UD) carbon construction provides superior stiffness and precise power transfer, aiding in explosive acceleration and maintaining high speeds throughout races.
Performance & Components
Specifically engineered for race use, these 20-inch BMX wheels feature a 36-hole drilled rim, compatible with both Presta and Schrader valves, facilitating versatile inflation options. The double-walled (Dbl) rim wall enhances structural integrity, handling intense racing stresses with ease. The aluminum rim's 28mm outer diameter and 390mm ERD provide optimal tire profile and fit, ensuring seamless tubeless compatibility for reduced rolling resistance and improved traction.
Innovative Features & Technology
The Acme UD wheels incorporate drilled brake surface with Legion brake pads included, optimized for carbon-friendly performance and reduced brake fade during high-speed descents. These pads deliver clean, reliable braking power, essential for race scenarios. Supporting riders up to 220 lbs, these wheels are built for aggressive riding styles and high-performance applications.
Style & Use Case
Designed for competitive BMX racing, the Alienation Acme UD Carbon wheels deliver a sleek, aerodynamic profile that reduces drag while maximizing acceleration and top-end speed. Perfect for track racers and serious enthusiasts, these wheels are built to excel in race environments where precision, durability, and lightweight construction are critical.
Upgrade your BMX setup with the Alienation Acme UD Carbon 20in Rims-where cutting-edge carbon technology meets race-ready performance. Dominate the track with confidence, knowing your wheels are engineered for speed, strength, and reliability.
- Unidirectional full carbon BMX rim crafted from high-strength Toray T700 carbon fiber for ultimate durability, lightweight performance, and race-ready stiffness.
- Features drilled holes compatible with both Presta and Schrader valves, with included plugs, ensuring versatility for various riding conditions and easy maintenance.
- Includes Legion brake pads made from carbon-friendly compound, delivering superior stopping power, consistent braking performance, and reduced heat transfer during intense BMX race sessions.
- Designed specifically for 20-inch BMX race use, with a 28mm outer diameter, 36 drilled holes, and tubeless compatibility for optimized grip, reduced weight, and minimal rolling resistance.
- Built to support riders up to 220 lbs, combining innovative engineering and sleek aerodynamic profile, making it the ideal choice for competitive BMX racing and aggressive riding styles.
| Specification | Value |
|---|---|
| Manufacturer | ALIENATION |
| Universal Product Code | 888571104156 |
| Invoice Description | RIM AN (AM) 20 406x21 ACME UD CARBON TBLS 36 w/LEGION PADS |
| Shipping Weight | 0.63 lbs. |
| Package Dimensions | 16.5 x 1 x 16.5 |
| HTS Number | 8714.92.1000C2 |
| Country of Origin | CHINA |
| Size | 20in |
| Brand | Alienation |
| Model | Acme UD Carbon |
| ISO | 406 |
| Width ID | 21 |
| Width OD | 28 |
| Profile | 20 |
| Wall | Dbl |
| Color | Carbon |
| Hole Count | 36 |
| Valve | PV/SV |
| Weight | 260g |
| ERD | 390 |
| Extras | Brake Pads Included |
| 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
-
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
