About The Product
- Forged aluminum cooling finned backing plate
- High performance organic compound
- Greatly reduced heat build up and lasting brake power
Enhance your bike's stopping power with the Koolstop D635K Clarks Brake Pad, engineered for superior heat dissipation, consistent performance, and versatile compatibility. Designed for high-performance cyclists and bike enthusiasts alike, these brake pads are an ideal upgrade for mountain, road, or hybrid bikes requiring reliable stopping power and durability.
Materials & Construction:
Built with a forged aluminum backing plate featuring finned cooling fins, the Koolstop D635K excels at dissipating heat generated during intense braking, reducing fade and prolonging pad life. The organic high-performance compound combines a premium resin with a specialized organic blend, delivering excellent modulation, noise reduction, and consistent braking feel in various riding conditions. Pads include spring retraction mechanisms for smooth and reliable operation.
Performance & Engineering:
Engineered for maximum heat management, these brake pads significantly lower heat buildup, ensuring lasting brake power even on long descents or aggressive riding. Their high-energy organic compound provides excellent friction and modulation, allowing for precise control and safe stopping in both wet and dry conditions.
Components & Technology:
Featuring a finned alloy backplate for superior heat conduction and innovative cooling fins to maintain optimal operating temperatures, the Koolstop D635K is a technological standout. Compatibility spans a broad range of top-tier components, including Clarks M1, M2, M3, CMD-22, CMD-23, CMD-27, Shimano XTR M985, M988, SLX M666/M675, XT M785, S700, CX75, FSA Afterburner, K-Force, and Origin8 Vise Hyd PM brake systems.
Style & Use Case:
Designed with a sleek, aerodynamic aesthetic, these brake pads are ideal for mountain biking, cyclocross, and high-performance road cycling. Their versatile compatibility and durable construction make them perfect for riders seeking dependable braking performance under intense riding conditions, from steep descents to urban commutes.
Innovative & Differentiating Features:
- Forged aluminum cooling finned backing plate for enhanced heat dissipation
- Organic high-performance brake compound for noise-free, consistent braking
- Included pad retraction springs for smooth operation and maintenance ease
- Broad compatibility with major braking systems including Shimano, FSA, Clarks, and Origin8
Upgrade to the Koolstop D635K Clarks Brake Pads for reliable, heat-resistant brakes that elevate your cycling experience. Whether biking on mountain trails or city streets, enjoy confident stopping power supported by advanced materials and engineering designed to perform at the highest level.
- High-performance organic brake pads with forged aluminum cooling fins and backing plate for superior heat dissipation and consistent stopping power.
- Engineered for compatibility with Clarks M1, M2, M3, CMD series, FSA Afterburner, K-Force, Origin8 Vise Hydraulic, Shimano Deore, SLX, XT, XTR, and S700 models, ensuring versatile use across major mountain and road bike setups.
- Innovative aluminum backing with integrated cooling fins significantly reduces heat buildup during intense riding or prolonged braking, extending pad lifespan and maintaining braking performance.
- Constructed with a high-grade organic compound for quiet operation, reliable modulation, and excellent stopping power in varied riding conditions-ideal for mountain biking, road cycling, and cyclocross applications.
- Includes pad retraction springs for easy installation and maintenance, with compatibility across multiple brake systems and a sleek design that combines style and function for serious cyclists seeking durability and top-tier performance.
| Specification | Value |
|---|---|
| Manufacturer | KOOLSTOP |
| Manufacturer Part No. | KS-D635K |
| Universal Product Code | 760251080861 |
| Invoice Description | BRAKE SHOES K/S DISC SHI XTR XT SLX AERO-KOOL ORGANIC M985/785/666 |
| Shipping Weight | 0.09 lbs. |
| Package Dimensions | 6.9 x 3.95 x 0.65 |
| Country of Origin | UNITED STATES |
| Pad Style ID | 21 |
| Compatibility | Clarks M1, M2, M3, CMD-22, CMD-23, CMD-27 / FSA Afterburner, K-Force / Origin8 Vise Hyd PM / Shimano Deore M615, SLX M666, SLX M675, XT M785, XTR M985, XTR M988, S700 (2011+), CX75 |
| Pad Material | Organic |
| Compound | Standard |
| Brand | Kool-Stop |
| Backplate | Finned Alloy |
- 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
