Sintered Hayes Stroker Ace 4 Piston Disc Brake Pads

The Kool-Stop KS-D241S is a sintered disc brake pad engineered for Hayes Stroker Ace 4-piston calipers. Built with a copper-plated backing plate and a sintered friction compound, these pads are designed to handle the kind of punishment that aggressive descents and demanding conditions throw at them — making them a strong choice for riders who push hard on steep technical terrain.

Our Take

For riders tackling the ghats around Pune, Lonavala, or Khandala, where long descents demand consistent stopping power even when rims run hot and hands start to fatigue, the KS-D241S delivers. The sintered compound maintains friction performance under sustained braking loads, and the copper-plated backing plate adds structural integrity where it matters. If you run Hayes Stroker Ace 4-piston calipers, this is a pad worth keeping in your toolkit before every big ride.

Sizing for Indian Riders

These pads are caliper-specific — they fit Hayes Stroker Ace 4-piston systems only. There is no size variation by rider weight or build. Riders in high-humidity regions like Kolkata or coastal Chennai should note that sintered compounds handle moisture and heat particularly well compared to organic alternatives, making them suitable year-round including through the monsoon season.

Compatibility Notes

Designed exclusively for Hayes Stroker Ace 4-piston disc brake calipers. The spring is included. Not compatible with other Hayes caliper models or third-party 4-piston systems. Clean rotors with isopropyl alcohol before installation. Bed in pads properly with a series of progressive stops to achieve full contact and consistent braking performance.

Pairs Well With

Complete your braking setup with compatible disc brake rotors, hydraulic brake fluid, brake bleed kits, and rotor truing tools. Riders doing sustained descents in Coorg or Ooty will also want to look at heat-management accessories and lever upgrades that complement high-performance pad compounds.

Explore the full KOOLSTOP collection at Cobbled Climbs

Why buy from Cobbled Climbs

• 100% genuine — authorised KOOLSTOP retailer in India
• Free delivery on orders above Rs. 2,500
• Cash on delivery available nationwide
• 7-day easy returns
• Shipped from Mumbai
• Expert advice — our team rides this gear

Kool-Stop has been manufacturing specialised brake pads and friction compounds for cyclists since the 1970s. Based in the United States, the brand is trusted by mountain bikers, road riders, and downhill racers worldwide for precise, reliable stopping power across a wide range of caliper and rim brake systems.

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If your item arrives damaged, incorrect, or doesn’t fit, you may request a return within 7 days of delivery. Email us at support@cobbledclimbs.com with your order details. Items must be unused and returned in original packaging with all tags and labels intact.

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