Description
The Kool-Stop D721 disc brake pads are a factory-replacement option for Promax hydraulic disc brake systems. They’re designed to deliver smooth, consistent braking while improving durability over basic organic pads.
This semi-metallic compound blends organic materials with a small amount of metal, making it a good everyday choice for commuters and recreational riders who want reliable stopping power without excessive noise or rotor wear.
Key Features
• Semi-metallic compound for balanced braking performance
• Factory replacement pad shape
• Smooth, predictable braking feel
• Rotor-friendly compound
• Steel backing plate for durability
Compatibility & Use Notes
• Pad Style ID: 18
• Compatible with:
– Promax DSK-320
– Promax DSK-400
– Promax DSK-610
– Promax DSK-700
– Promax DSK-720
– Promax X-Nine
• Semi-metallic pad material
• Steel backing plate
• Designed for Promax hydraulic disc brakes
• Not compatible with other Promax or non-listed calipers
Service / Ownership Context
When replacing pads, re-center the caliper and verify proper pad clearance for consistent braking. Proper bed-in is important to achieve full performance and pad life. Inspect pad thickness regularly, especially in wet or gritty riding conditions.
Fit & Use Signals
• You run compatible Promax hydraulic disc brakes
• You want smoother braking with better durability than organic pads
• You ride recreationally or commute regularly
• Not a fit for non-Promax brake systems
• Not a fit if your brake uses a different pad shape
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