About The Product
- Factory replacement high-performance disc brake pads
- Organic materials with small amounts of metal
- Rotor friendly
Upgrade your bike's braking performance with the Koolstop D635A Clarks M1, M2, M3, CMD-22, CMD-23, CMD-27, FSA Afterburner, K-Force, Origin8 Vise Hyd PM, and Shimano-compatible high-performance disc brake pads. Designed with precision and innovation, these pads deliver superior stopping power, durability, and rotor-friendly performance for serious cyclists and enthusiasts alike.
Materials & Engineering Excellence
Crafted from a semi-metallic organic compound, these brake pads fuse organic materials with small amounts of metal to optimize friction and heat management. The aerodynamic aluminum backing plate reduces weight by 50% compared to steel counterparts, enhancing overall riding efficiency and responsiveness. Each pad includes a durable retention spring for secure installation and consistent performance.
Advanced Components & Technology
Engineered for compatibility with a broad range of high-end and aftermarket disc brake systems, including Clarks M series, CMD models, FSA Afterburner, K-Force, Origin8 Vise Hyd PM, and Shimano Shimano Deore, SLX, XT, and XTR models (2011+). The semi-metallic compound ensures excellent modulation, fade resistance, and rotor friendliness, extending your brake rotor lifespan and maintaining consistent braking throughout your ride.
Performance & Use Case
Ideal for mountain biking, cyclocross, gravel riding, and road biking, these pads excel in various conditions-wet, muddy, or dry. Their high-performance organic blend provides smooth, predictable braking while minimizing rotor wear. Perfect for cyclists seeking reliable, factory-replacement pads that combine dependable stopping power with lightweight design.
Style & Durability
With a sleek, lightweight aluminum backing and a proven organic semi-metallic formulation, these pads offer a clean, professional look while delivering unmatched durability. Whether you're racing, commuting, or tackling technical trails, the Koolstop D635A pads provide the confidence you need in every pedal stroke.
Key Features at a Glance:
- Factory replacement high-performance disc brake pads compatible with major brands and models
- Organic semi-metallic compound for rotor-friendly, consistent braking
- Aluminum backing plate reduces weight without sacrificing strength
- Includes pad retention spring for secure fit and easy installation
- Suitable for mountain biking, road cycling, cyclocross, and gravel riding
- Long-lasting, fade-resistant performance in all weather conditions
Enhance your bike's braking system with Koolstop's trusted quality and innovative design. Order your set of D635A Clarks, FSA, Origin8, Shimano, or compatible disc brake pads today for reliable stopping power on every ride!
- High-performance organic disc brake pads engineered for reliable stopping power across a variety of Shimano, FSA, Clarks, and Origin8 hydraulic brake systems, ensuring compatibility and optimal performance.
- Constructed with a semi-metallic compound and lightweight aluminum backing plate, these pads deliver enhanced durability, reduced weight, and rotor-friendly braking for a smoother ride.
- Designed for versatility, these factory replacement pads are compatible with popular models like Shimano Deore, SLX, XT, XTR, Clarks M1-M3, CMD series, and more, making them ideal for mountain biking, gravel, and cyclocross applications.
- Featuring innovative organic composite materials blended with resin and minor metal elements, these brake pads provide consistent brake feel, excellent modulation, and long-lasting performance even in demanding riding conditions.
- Includes a pad retention spring for secure installation and reliable braking performance, making them a must-have upgrade for serious cyclists seeking high-quality, aftermarket hydraulic disc brake pads.
| Specification | Value |
|---|---|
| Manufacturer | KOOLSTOP |
| Manufacturer Part No. | KS-D635A |
| Universal Product Code | 760251080090 |
| Invoice Description | BRAKE SHOES K/S DISC SHI XT SLX ORG ALYM985/785/975 |
| Shipping Weight | 0.04 lbs. |
| Package Dimensions | 9.55 x 3.2 x 0.5 |
| 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 | Semi-Metallic |
| Compound | Standard |
| Brand | Kool-Stop |
| Backplate | Aluminum |
- 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:
-
The item must be in new, unused, and uninstalled condition.
-
All original packaging, tags, hardware, and accessories must be included and intact.
-
Items showing wear, installation marks, damage, or improper use cannot be accepted.
-
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:
-
You will receive a Return Authorization email with instructions.
-
Print the prepaid label provided by us. ($9.99 will be deducted from your refund)
-
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:
-
Electronics with opened packaging or broken manufacturer seals
-
Any part that has been installed or shows installation attempts
-
Tools or chemicals that have been opened or unsealed
-
Open‑box items with destroyed or missing packaging
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
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:
-
Alaska
-
Hawaii
-
Puerto Rico
-
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.
-
We cannot ship hazardous materials or oversized items to military addresses due to carrier and military mail restrictions.
-
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
