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 setup with the Acme UD Carbon Alienation 20-inch Wheel-engineered for serious riders seeking lightweight performance and exceptional durability. Crafted from high-grade Toray T700 carbon fiber composite, this unidirectional (UD) rim delivers optimal strength-to-weight ratio, making it ideal for competitive racing and aggressive freestyle riding.
Materials & Engineering:
Constructed entirely from premium Toray T700 full-carbon fiber, the Acme UD Carbon Alienation rim offers unparalleled stiffness, resilience, and a sleek, lightweight profile. Its unidirectional carbon design maximizes strength while minimizing weight, ensuring rapid acceleration and efficient power transfer. The double-walled construction enhances durability, making it resistant to impact and stress during intense rides.
Performance & Components:
Designed specifically for BMX racing, this 20-inch rim features a 28mm outer diameter and a 21mm internal width, providing excellent support for various tire types, including tubeless-compatible options. Drilled for both Presta and Schrader valves, it includes a plug for unused valve holes, maintaining an airtight seal. With an impressive 220-pound rider weight limit, this rim performs reliably under rigorous race conditions, whether used with disc brakes or as a brakeless front wheel.
Technology & Features:
The Acme UD Carbon Alienation 36 features 36 drilled spoke holes, ensuring secure tension and optimal wheel trueness. Its compatibility with tubeless tires reduces weight and rolling resistance, offering riders enhanced speed and control on the track or trail. Designed exclusively for race use, it combines innovative carbon engineering with cutting-edge technology to deliver peak performance.
Style & Use Case:
With a sleek black finish and a modern aesthetic, this wheel is perfect for competitive BMX racers looking to shave seconds off their lap times while maintaining a stylish profile. Whether you're upgrading your existing setup or building a race-ready bike, the Acme UD Carbon Alienation 20-inch rim provides the lightweight, strength, and reliability you need for podium finishes.
Key Features at a Glance:
- Unidirectional full-carbon Toray T700 composite for maximum strength and minimal weight
- Optimized 20-inch BMX wheel size for racing and freestyle riding
- Double-walled construction with a 28mm diameter and 21mm internal width
- Drilled for Presta and Schrader valves, with included valve hole plug
- Tubeless compatible for reduced rolling resistance and instant puncture repair
- Supports riders up to 220 lbs, suitable for high-impact race scenarios
- Designed for use with disc brake systems or as a brakeless front wheel
Enhance your BMX performance with the Acme UD Carbon Alienation 20-inch wheel-where advanced carbon engineering meets race-ready innovation. Perfect for competitive riders demanding lightweight strength, precise handling, and superior durability.
- Unidirectional carbon fiber BMX rim constructed with full Toray T700 material for exceptional strength, durability, and lightweight performance, ideal for competitive racing and aggressive riding.
- Designed with versatile compatibility for disc brakes and brakeless setups, offering optimal control and braking performance in various riding conditions.
- Precision-drilled to accommodate both Presta and Schrader valves, with included valve plugs for a clean, customizable look and ease of maintenance during race or training sessions.
- Crafted for high-performance use, supporting riders up to 220 lbs, ensuring stability, strength, and reliability under demanding race conditions.
- Sleek 20-inch aerodynamic profile with tubeless compatibility and optimized dimensions (ERD 390, internal width 21mm), providing enhanced traction, reduced weight, and modern style for serious BMX racers.
| Specification | Value |
|---|---|
| Manufacturer | ALIENATION |
| Universal Product Code | 888571077221 |
| Invoice Description | RIM AN (AM) 20 406x21 ACME UD CARBON TBLS DISC 36 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 | 36 |
| 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
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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
-
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
