About The Product
- Factory replacement high-performance disc brake pads
- Organic materials with small amounts of metal
- Rotor friendly
Upgrade your bicycle's braking performance with the Koolstop D721 Promax Semi-Metallic Disc Brake Pads - a must-have for cyclists seeking reliable stopping power, rotor friendliness, and superior durability. Designed specifically for Promax disc brake systems, including models DSK-320, DSK-400, DSK-610, DSK-700, DSK-720, and X-Nine, these factory-replacement brake shoes deliver consistent, high-performance braking in all riding conditions.
Materials & Construction
Crafted from advanced semi-metallic compounds, the Koolstop D721 brake pads feature a blend of organic materials with small amounts of metal, providing an optimal balance of braking power and rotor safety. The high-quality steel backplate ensures durability and heat dissipation, making these pads a long-lasting solution for frequent riders and mountain bikers alike.
Performance & Engineering
Engineered for rotor-friendly operation, these brake pads deliver smooth, controlled braking with minimal rotor wear. Their semi-metallic material offers excellent heat resistance and consistent performance in wet or muddy conditions, ensuring confidence and safety during intense rides or daily commutes.
Components & Technology
The pads feature a standard compound optimized for versatile riding scenarios, combining effective stopping power with low noise and vibration. The steel backplate enhances structural integrity, ensuring reliable performance under demanding riding conditions.
Style & Use Case
Ideal for mountain biking, cyclocross, and hybrid cycling, the Koolstop D721 brake pads are perfect for riders who prioritize dependable braking, durability, and rotor protection. Whether you're tackling technical trails or commuting in urban environments, these pads provide the confidence you need to ride safely and efficiently.
Innovative Features
Known for their rotor-friendly design, Koolstop brake shoes minimize rotor wear and squeal, extending the lifespan of your braking system. Easy to install, these factory replacement pads are a smart upgrade for maintaining optimal brake performance without the need for specialized tools.
Optimize your bike's braking system with the trusted quality of Koolstop's D721 Promax semi-metallic brake pads. Experience enhanced control, durability, and rotor safety-designed to meet the demands of serious cyclists and everyday riders alike.
- High-performance semi-metallic brake shoes designed specifically for Promax disc brake systems, including DSK-320, DSK-400, DSK-610, DSK-700, DSK-720, and X-Nine models, ensuring precise compatibility and reliable stopping power.
- Constructed from organic materials blended with small amounts of metal, these Koolstop D721 brake pads offer rotor-friendly performance, minimizing wear and reducing noise for a smoother ride.
- Engineered with a steel backplate and semi-metallic compound, these brake shoes deliver consistent braking performance, improved heat dissipation, and enhanced durability even under demanding cycling conditions.
- Ideal for mountain biking and cyclocross enthusiasts, these semi-metallic brake pads provide excellent modulation and reliable stopping power in diverse terrains, making them perfect for demanding trail rides and technical descents.
- Designed by Koolstop, a trusted brand in bicycle braking technology, these replacement brake shoes ensure easy installation, superior braking efficiency, and long-lasting performance for a safer cycling experience.
| Specification | Value |
|---|---|
| Manufacturer | KOOLSTOP |
| Manufacturer Part No. | KS-D721 |
| Universal Product Code | 760251076840 |
| Invoice Description | BRAKE SHOES K/S DISC PROMAX MECH D721 |
| Shipping Weight | 0.05 lbs. |
| Package Dimensions | 5.15 x 3.2 x 0.2 |
| Country of Origin | UNITED STATES |
| Pad Style ID | 18 |
| Compatibility | Promax DSK-320, DSK-400, DSK-610, DSK-700, DSK-720, X-Nine |
| Pad Material | Semi-Metallic |
| Compound | Standard |
| Brand | Kool-Stop |
| Backplate | Steel |
- 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
