Kool Stop Dura-Ace Type Replacement Pads
Kool Stop

Kool Stop Dura-Ace Type Replacement Pads

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High-performance Kool Stop replacement brake inserts in a carbon compound for Shimano Dura-Ace 7700, Ultegra 6500 and 105 5500 holders. Designed to plow rain and mud away while delivering confident stopping on carbon rims.

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Product Details

Overview & Technology

Kool Stop Dura-Ace Type Replacement Pads (KS-DURACF) are engineered specifically for modern road carbon rims and classic Shimano road caliper holders. The pads use a carbon-based compound formulated to provide controlled modulation, reliable stopping power, and increased heat tolerance compared with generic rubber pads. The pad face features molded drainage channels that actively plow rain and mud away from the rim, improving wet-weather bite and shorter stopping distances. The compound balances low wear on carbon braking surfaces with consistent friction so you get repeatable performance on long descents and variable conditions.

Key Features & Benefits

Carbon compound tuned for carbon rims: optimized friction and heat resistance for modern carbon braking surfaces. Expect strong modulation, predictable lever feel, and reduced glazing at high temperatures. • Wet-weather grooves: Channel water and grime off the rim for improved performance in rain. • Shimano Dura‑Ace/Ultegra/105 fit: Directly compatible with Dura‑Ace 7700, Ultegra 6500 and 105 5500 style pad holders. • Low weight & slim profile: Minimal added mass (approx. 0.05 lb shipping weight) keeps your setup race-ready.

Fit, Compatibility & Installation

These pads are designed as replacement inserts for Shimano-style cartridge pad holders used on Dura‑Ace 7700, Ultegra 6500 and 105 5500 calipers. They are not universal cartridges — verify your caliper uses the same cartridge geometry before purchase. The KS-DURACF part number corresponds to Kool Stop's Dura‑Ace Type carbon insert. Installation is straightforward: slide the cartridge into the Shimano-style pad holder and secure with the existing retaining pin. For best initial performance, clean the carbon rim braking surface with isopropyl alcohol, fit the pad with slight toe-in if desired, and bed the pads in with progressive braking. Do not use these carbon-compound pads on aluminum rims — they are formulated for carbon and may perform poorly or wear unevenly on alloy braking surfaces.

Who These Pads Are For

These Kool Stop carbon pads are aimed at road riders who run carbon rims and use Shimano Dura‑Ace/Ultegra/105 style calipers — racers, time trialists, and confident road cyclists who demand consistent braking in all conditions. If you ride in wet climates or do long, steep descents on carbon wheels, these pads give improved wet bite and fade resistance. If your rims are alloy or you need a multipurpose pad for mixed wheelsets, consider a compound specified for aluminum or a dual-compatible pad. For pure carbon rim setups, the KS-DURACF is a close OEM-style replacement that restores factory fit and performance.

Key Features

  • ✓ Carbon brake pad compound optimized for carbon rims and heat resistance
  • ✓ Direct fit for Shimano Dura‑Ace 7700, Ultegra 6500 and 105 5500 holders
  • ✓ Molded grooves plow rain and mud away for reliable wet braking
  • ✓ Consistent modulation and reduced glazing on long descents
  • ✓ Lightweight cartridge inserts for race-ready stopping power
  • ✓ Easy slide-in installation using existing Shimano retaining pin
  • ✓ KS-DURACF part number — OEM-style replacement for Dura‑Ace type

Specifications

Brake Pad Compound Carbon
Holder Compatibility Shimano
Rim Compatibility Carbon

Product Identifiers

Vendor Item # KS-DURACF
UPC 760251080250

Frequently Asked Questions

Will these pads fit my Shimano Dura‑Ace 7700 calipers?

Yes — these Kool Stop pads are specifically made to fit Dura‑Ace 7700-style cartridge holders and are also compatible with Ultegra 6500 and 105 5500 holder types. Confirm your caliper uses the same cartridge geometry before ordering.

Can I use these on aluminum rims?

No — the KS-DURACF pads use a carbon-specific compound designed for carbon braking surfaces. Using them on aluminum rims can result in suboptimal braking and accelerated pad or rim wear. Choose pads labeled for aluminum if you run alloy rims.

How do I bed in these carbon compound pads?

Clean the rim braking surface with isopropyl alcohol, then perform progressive stops from moderate speed to lower speed, repeating 8–12 times without locking the wheel. Allow the pads and rim to cool between long descents to stabilize performance.

Are these good for wet-weather riding?

Yes — the molded grooves are designed to channel water and mud off the rim, improving bite in wet conditions. They deliver more predictable wet braking than many generic road pads.

How long will these pads last?

Pad life depends on riding style, rim surface, and conditions. Carbon compounds can be longer-lasting than soft wet compounds on carbon rims, but aggressive braking and grit exposure will reduce lifespan. Inspect pads regularly and replace when the groove pattern is worn or braking performance drops.

Do I need special tools to install them?

No special tools are required beyond standard roadside tools. Slide the cartridge into the Shimano-style pad holder and secure with the existing retaining pin. Make sure the pad is seated correctly and the pin is fully engaged.

Buying Guide

When choosing road caliper pads for carbon rims, prioritize compound compatibility, heat resistance, and intended conditions. Carbon-specific compounds like Kool Stop's KS‑DURACF are formulated to protect carbon braking surfaces while delivering predictable friction and modulation. Ensure pad cartridges match your caliper holder type—these are matched to the classic Shimano Dura‑Ace 7700 family geometry. Consider your riding conditions: wet-weather ridership benefits from grooved compounds that evacuate water and grit, while heavy descending requires pads with good heat resistance to minimize fade. If you switch between carbon and alloy wheels frequently, look for dual-compatible solutions or carry spare pads matched to each rim type.

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