Thicker pad material and a narrower contact width define the Dura 2 insert from Kool Stop. This updated road pad design provides longer service life than the standard Dura Type insert while fitting modern narrow rim profiles with its 7.65mm contact surface. Cut-outs in the pad body reduce weight without sacrificing braking surface area, and water grooves help clear moisture from the rim contact zone in wet conditions.

The black compound is Kool Stop's standard formulation, optimized for dry condition riding while still providing reliable performance when the weather turns. Like all Kool Stop compounds, the black material is formulated and milled in-house, which allows the company to control quality and maintain rim-friendly characteristics across the pad's lifespan. If you're running aluminum rims in predominantly dry conditions, the black compound delivers consistent modulation and stopping power without excessive wear on your braking surface.

Fitment matches the Shimano cartridge-style holder specification, making these a direct replacement for worn pads in Shimano, SRAM, TRP, and Tektro brake systems that use a set screw to secure the insert. The Dura 2 inserts slide into your existing 55mm holders, so you're only replacing the wear item rather than the entire brake shoe assembly. This makes pad swaps straightforward whether you're doing routine maintenance or dialing in your setup before an event.... Read More