About The Product
- Post mount adapter bracket increases rotor compatibility from 180mm to 220mm in the front, or from 140mm to 180mm in the rear
Upgrade your bike's braking performance with the Magura QM 45 Disc Brake Adapter, a precision-engineered component designed for versatility and reliable stopping power across various rotor sizes. Built with high-quality materials and innovative mounting technology, this adapter ensures a seamless fit for both front and rear brakes, enhancing your riding experience whether you're tackling technical trail rides or commuting through urban environments.
Materials & Durability:
Constructed from robust, lightweight aluminum alloy with a sleek black finish, the Magura QM 45 adapter combines durability with corrosion resistance. Its engineering quality guarantees long-lasting performance under demanding riding conditions, making it ideal for mountain biking, cyclocross, and everyday cycling.
Performance & Engineering:
Designed to facilitate smooth, efficient braking by transforming existing Magura post mount calipers from 180mm to 220mm front rotors and 140mm to 180mm rear rotors, this adapter optimizes heat dissipation and reduces brake fade. Its precise manufacturing ensures excellent alignment and consistent braking response, critical for rider safety and control.
Components & Technology:
The adapter includes all necessary hardware for secure mounting, allowing for quick and straightforward installation. Compatible with Magura disc brake calipers and frames with Post Mount standards, it seamlessly adapts to eclectic setups, offering versatility in rotor size customization.
Style & Use Case:
Designed with a sleek black aesthetic, the QM 45 adapter complements any bike style, from rugged mountain bikes to sleek urban rides. Its ability to accommodate a wide range of rotor sizes makes it perfect for riders seeking improved stopping power, whether upgrading an existing setup or customizing a new bike build.
Innovative Features:
- Fits both front (180mm to 220mm rotor) and rear (140mm to 180mm rotor) applications
- Compatible with Post Mount 74mm calipers, enhancing modularity and upgrade options
- Includes hardware for rapid, secure installation
- Crafted for precise alignment and optimal braking efficiency under diverse conditions
Key Specifications:
- Compatibility: Post Mount calipers, 74mm and IS standards
- Rotor Size Compatibility: 180mm to 220mm (front), 140mm to 180mm (rear)
- Material: Aluminum alloy with durable black finish
- Package Includes: Mounting hardware for hassle-free installation
- Color: Classic Black
Enhance your bike's braking system with the Magura QM 45 Disc Brake Adapter-engineered for precision, built for durability, and designed for riders who demand high-performance stopping power. Ideal for mountain biking, gravel riding, and urban cycling, this adapter delivers the adaptability and reliability you need for confident, controlled rides.
- Designed for versatile bike setups, the Magura QM 45 Disc Brake Adapter accommodates a wide range of rotor sizes from 140mm to 220mm, optimizing braking power for both front and rear mountain biking and e-bike applications.
- Constructed from durable, lightweight materials, this adapter ensures long-lasting performance while reducing overall bike weight for enhanced handling and agility during demanding rides.
- Featuring innovative Post Mount technology, the QM 45 seamlessly integrates with Magura disc brake calipers, enabling precise fitment and reliable braking performance across different frame standards and rotor sizes.
- Ideal for upgrading or customizing your bike's braking system, this adapter is compatible with both 74mm Post Mount calipers and a variety of rotor configurations, providing flexibility for serious cyclists and trail riders.
- Includes all necessary mounting hardware and detailed installation instructions, making it easy to install and switch between rotor sizes, ensuring you get optimal braking performance for aggressive riding and technical mountain terrain.
| Specification | Value |
|---|---|
| Manufacturer | MAGURA |
| Manufacturer Part No. | 2 701 940 |
| Universal Product Code | 4055184025888 |
| Invoice Description | BRAKE PART MAG DISC ADPTR QM45 PM F220mm/R180mm |
| Shipping Weight | 0.07 lbs. |
| Package Dimensions | 5.65 x 2.9 x 1.1 |
| Country of Origin | TAIWAN |
| Rotor Size | 180mm to 220mm/140mm to 180mm |
| Frame Mount | Post Mount |
| Caliper Mount | Post Mount |
| Color | Black |
| Size | 40mm |
| Adapter / Bolts | Adapter |
- 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
