Pro Design Engine Cylinder Head
Pro Design Cool Heads: Race-Proven Cylinder Head Technology
Pro Design Racing has built a devoted following among powersports enthusiasts for a straightforward reason: their products are born from real racing. Engineering and manufacturing high-performance parts since 1982, Pro Design's crowning achievement in the Engine Cylinder Head category is the iconic Cool Head — a modification that has stood the test of time on the professional racing circuit.
Why the Cool Head Stands Apart
The Cool Head is engineered around a fundamental problem with two-stroke engines: heat-induced power loss. As Pro Design explains, heat causes expansion, and beyond a certain operating temperature, the ring seal in a two-stroke cylinder is compromised — costing you power right when you need it most. The Cool Head addresses this by optimizing thermal management directly at the cylinder head, helping maintain a tighter, more consistent ring seal and keeping combustion conditions stable under hard riding conditions.
Beyond thermal control, Pro Design engineers each Cool Head with an optimized squish clearance tailored to specific models. Squish geometry directly influences combustion efficiency and detonation resistance, making this more than just a cooling upgrade — it's a precision tuning component designed for each application individually.
Trusted by Champions and Top Tuners
The Pro Design Cool Head's reputation wasn't built in a catalog — it was earned on the track. Championship motocross and TT riders have taken wins with the Cool Head installed, and top ATV engine tuning shops have long incorporated it into their race engine packages. Its presence in the builds of serious competitors speaks to its real-world effectiveness.
Pro Design supports a wide range of popular powersports platforms, offering Cool Head fitments for ATVs and motocross bikes from Honda, Kawasaki, Suzuki, and Yamaha, among others. Whether you're running a stock-displacement machine or a heavily ported, big-bore build, there's likely a Pro Design Cool Head engineered specifically for your setup.
Who Should Consider a Pro Design Cylinder Head?
- Two-stroke ATV and motocross riders looking to recover power lost to heat soak during extended or aggressive riding
- Racers and performance builders who want a precisely engineered squish clearance rather than a generic off-the-shelf solution
- Hobbyists and weekend warriors who want a proven, race-validated upgrade without custom machining costs
If you're serious about squeezing more performance and reliability out of your two-stroke powerplant, the Pro Design Cool Head is one of the most time-tested cylinder head upgrades in powersports. Explore the full Pro Design Racing lineup or browse all Engine Cylinder Heads to find the right fit for your machine.