About The Product
- Lightweight yet incredibly sturdy All Mountain rim suited for any rock garden you can find
Elevate your mountain biking performance with the DT Swiss XM 421 27.5" Tubeless Disc Rim - the ultimate choice for All Mountain, Enduro, and XC riders seeking durability, versatility, and enhanced trail confidence. Crafted from high-strength alloy and engineered for aggressive riding, the XM 421 combines innovative design with proven technology to deliver superior handling on rugged terrain.
Materials & Construction
Constructed from premium-grade alloy, the DT Swiss XM 421 rim offers exceptional strength-to-weight ratio, ensuring reliable durability during intense trail riding. Its tubeless-ready architecture incorporates a double-wall design for added resilience, while the black anodized finish reduces corrosion and maintains a sleek, minimal aesthetic.
Performance & Engineering
Designed to resist rock gardens, sharp impacts, and demanding trail conditions, this rim features a 25mm internal width that optimizes tire profile and grip, enhancing traction and control. With a precise 562mm ERD (Effective Rim Diameter), it guarantees a consistent and secure tubeless seal when paired with compatible tape, valves, and sealant (sold separately). The 20mm profile ensures a balanced ride, combining stability and quick handling.
Components & Technology
The wheel features 32 drilling points for versatile hub compatibility and uses the innovative Prolock Squorx Pro Head nipples paired with PHR washers. These components facilitate easy assembly and robust durability, with the washer positioned between the nipple and rim for optimal load distribution. The inclusion of 2.0 silver alloy nipples and PHR washers, designed with precise spacing, ensures a secure, long-lasting wheel build. For optimal performance, DT Swiss recommends greasing contact points during assembly.
Design & Use Case
Perfectly suited for aggressive trail riding, the XM 421 excels in All Mountain, Enduro, and XC disciplines. Its tubeless compatibility allows for lower tire pressures, reducing tire burps and enhancing traction without adding weight. The rim's 30mm external diameter and 25mm internal width provide a stable platform for wide tires, making it ideal for tackling rocky sections, technical climbs, and descents.
Innovative & Differentiating Features
- Tubeless-Ready alloy rim designed for quick installation and reliable sealing
- Compatible with disc brake systems only, optimized for accurate braking performance
- Double-walled construction for increased durability against harsh trail impacts
- 32 spokes drilled for balanced load distribution and increased strength
- Black finish adds a sleek, professional look while reducing corrosion
Specifications
- Rim Size: 27.5" (650b)
- Internal Width: 25mm | External Width: 30mm
- ERD: 562mm (including PHR washers)
- Valve Type: Presta (PV)
- Wheel Weight: 440g (including PHR washers)
- Hub Drilling: 32 holes
- Compatibility: Disc brakes only
- Material: High-strength alloy
- Suitable for: XC, All Mountain, Enduro riding
Upgrade your trail bike with the DT Swiss XM 421 Tubeless Disc Rim - the perfect blend of lightweight engineering, rugged durability, and advanced tubeless technology that will take your mountain biking adventures to new heights.
- High-performance 27.5" tubeless-ready alloy disc rim engineered for all-mountain, enduro, and XC riding, offering superior durability and reduced weight (440g) for aggressive trail adventures.
- Precision-crafted with alloy construction and optimized internal width of 25mm, the DT Swiss XM 421 provides excellent tire support, improved traction, and enhanced rollover capabilities on rocky terrains and technical trail features.
- Features innovative Prolock Squorx Pro Head nipples and PHR washers, allowing for easy, secure wheel building and maintenance, with a specialized grease application recommendation to ensure long-lasting, reliable spoke tension.
- Tubeless compatibility with compatible sealant, tape, and valves (sold separately) makes for a seamless setup, reducing flats and lowering rolling resistance for faster, more confident rides across varied trail conditions.
- Designed with 32-hole drillings, black aesthetic finish, and durable alloy material, the XM 421 rim combines style and performance, making it an ideal choice for mountain bikers seeking a versatile, robust, and lightweight rim for diverse mountain biking disciplines.
| Specification | Value |
|---|---|
| Manufacturer | DT SWISS |
| Manufacturer Part No. | RDXM4265032S011456 |
| Universal Product Code | 7630033852067 |
| Invoice Description | RIM DT 27.5 584x25 XM421 32 BK DISC TBLS |
| Shipping Weight | 0.97 lbs. |
| Package Dimensions | 23.24 x 1.18 x 23.24 |
| Country of Origin | CHINA |
| Size | 27.5in |
| Brand | DT Swiss |
| Model | XM421 |
| ISO | 584 |
| Width ID | 25 |
| Width OD | 30 |
| Profile | 20 |
| Wall | Dbl |
| Side | DISC |
| Color | Black |
| Hole Count | 32 |
| Valve | PV |
| Weight | 440g |
| ERD | 564 |
| Tire Compatibility | Tubeless Compatible |
| Search Color | Black |
| 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
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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
