Speedmaster's partnership with John Zappia marks a direct connection between engineering capability and the highest level of Australian drag racing. Zappia, the country's most accomplished Top Doorslammer competitor, brings decades of experience at the sharp end of professional competition.

Who Is John Zappia

John Zappia has built his reputation through consistent results in Australia's Top Doorslammer category, one of the most demanding classes in drag racing. Running a full-bodied race car at speeds exceeding 250 mph requires precision engineering across every system: engine management, ignition, fuel delivery, and data acquisition. Zappia's program operates at a level where component reliability is not optional.

The Procomp Electronics Connection

Through Speedmaster's Procomp Electronics division, this partnership puts advanced electronics and engine management technology directly into a proven racing program. The data that comes back from Zappia's car under race conditions feeds directly into product development. What works at 6,000 horsepower informs what ships to customers building street and bracket cars.

Engineering Validated at the Track

Partnerships like this are how Speedmaster tests its engineering under the most demanding conditions available. A Top Doorslammer run compresses thousands of data points into a few seconds. Every component is operating at its limit. The information gathered from Zappia's program translates into products that are designed with real-world validation, not theoretical performance.

This collaboration between Speedmaster, Procomp Electronics, and John Zappia's racing program represents Speedmaster's ongoing commitment to developing products where they matter most: under competition conditions.