About The Product
- Kool-Stop E-bike pads are produced with a ceramic barrier between the organic friction material and the steel backing plate to reduce heat transfer into the brake calliper causing brake fade
- Kool-Stop organic disc brake pads designed to be rotor friendly and even performing through the life of the pad
Enhance Your Brake Performance with Koolstop D640E Clarks M4 / Shimano Saint M810, M820, M640, M8020 / TRP G-Spec E-MTB, Quadiem, Slate Evo Disc Brake Pads
Experience superior stopping power and reliability with the Koolstop D640E disc brake pads, expertly engineered for high-performance mountain biking. These premium organic and sintered pads are meticulously designed to deliver consistent, rotor-friendly braking in a variety of riding conditions, making them an essential upgrade for E-MTB riders and serious cyclists.
Materials & Engineering Excellence:
Constructed with high-quality organic materials blended with top-tier resins, Koolstop organic pads offer smooth and predictable braking. Their steel backplates, coated in vibrant red for the organic variants, provide durability and secure fitment. Sintered models utilize advanced metallic compounds with copper plating, ensuring enhanced performance, longevity, and heat resistance during aggressive descents or extreme terrain. E-Bike specific pads feature a ceramic barrier between the organic friction material and steel backing, significantly reducing heat transfer and minimizing brake fade for sustained, reliable braking.
Performance & Components:
Designed for compatibility with Clarks M4 / Shimano Saint M810, M820, M640, M8020, TRP G-Spec E-MTB, Quadiem, Quadiem G-Spec, Slate Evo, and Slate T4 brake systems, these pads provide tailored fit and optimal performance. The organic formulations are rotor-friendly, helping extend the life of your rotors while offering consistent modulation. Sintered options provide maximum durability and braking power in mud, rain, or challenging mountain conditions, making them versatile for all-weather riding.
Style & Use Case:
Perfect for aggressive trail riding, enduro, and E-MTB applications, Koolstop D640E pads are your go-to solution for reliable downhill control and precise braking. Their high-tech materials and innovative features ensure you maintain confidence and control on steep descents and technical sections. Whether upgrading your existing brake setup or replacing worn pads, these pads deliver the performance riders demand.
Innovative & Differentiating Features:
- Ceramic barrier technology in E-Bike pads reduces heat transfer, preventing brake fade during extended rides
- Rotor-friendly organic composition maintains rotor health and extends wear life
- Compatible with a wide range of high-performance brake systems for versatile use
- Durable steel backplates ensure secure fitment and ease of installation
Upgrade your braking system today with Koolstop D640E disc brake pads-designed for rider demanding performance, durability, and peace of mind on every trail. Optimize your mountain biking experience with trusted, high-quality components that keep you in control.
- High-performance organic and sintered disc brake pads compatible with Clarks M4, Shimano Saint M810, M820, M640, M8020, TRP G-Spec E-MTB, Quadiem, Quadiem G-Spec, and Slate Evo systems, engineered for reliable stopping power in diverse riding conditions.
- Premium organic pads feature a resin-rich blend with steel back plates for rotor-friendly performance and consistent modulation across the pad's lifespan, making them ideal for trail riding and everyday mountain biking.
- Sintered pads utilize a metallic compound with copper-plated back plates, delivering superior durability, heat resistance, and maximum stopping power even in extreme terrain or wet, muddy conditions, perfect for aggressive E-MTB riding.
- Innovative ceramic barrier technology reduces heat transfer into brake calipers, minimizing brake fade during prolonged descents and ensuring consistent braking performance across long rides and intense climbs.
- Designed with versatile use in mind, these Koolstop E-bike-compatible brake pads combine top-tier materials and engineering to deliver reliable braking in all weather, enhancing rider confidence and safety on mountain trails and technical terrains.
| Specification | Value |
|---|---|
| Manufacturer | KOOLSTOP |
| Manufacturer Part No. | KS-D640E |
| Universal Product Code | 760251082728 |
| Invoice Description | BRAKE SHOES K/S DISC SHI ZEE/SAINT E-BIKE |
| Shipping Weight | 0.06 lbs. |
| Package Dimensions | 5.2 x 3.2 x 0.2 |
| Country of Origin | UNITED STATES |
| Pad Style ID | 31 |
| Compatibility | Clarks M4 / Shimano Saint M810, M820, M640, M8020 / TRP G-Spec E-MTB, Quadiem, Quadiem G-Spec, Slate Evo, Slate T4 |
| Pad Material | Organic |
| Compound | E-Bike |
| 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
