From precision forging to global performance — the JA-Modified journey.
JA-Modified Racing Performance was born from a simple belief: performance engine components should be factory-direct, precision-engineered, and accessible to serious builders worldwide.
For over two decades, our founding team has been at the heart of the performance aftermarket — working with forge masters, CNC machinists, and championship-winning engine builders to develop components that deliver at the highest level.
Every JA-Modified piston and connecting rod is the result of this experience: forged from premium materials, machined to exacting tolerances, and backed by real-world testing in motorsport and high-performance applications across the globe.
We don't just manufacture parts — we build partnerships with dealers, engine builders, and racing teams who demand the best. Our direct-from-factory model means better pricing, tighter quality control, and faster response for every customer.
Every component starts as a forged blank and is CNC machined to your exact specifications. 2618 & 4032 aluminum alloys, 4340 steel, 300M, and titanium — matched to your build.
Our team began developing performance forged pistons in China, working with OE-quality forging facilities to establish production standards for the aftermarket.
Added connecting rod manufacturing capabilities — H-Beam, I-Beam, and X-Beam designs in 4340 steel, 300M alloy, and titanium for a growing range of performance engines.
JA-Modified Racing Performance officially launched as a dedicated brand, bringing factory-direct forged pistons and connecting rods to dealers and builders worldwide.
Expanding product coverage across VW/Audi, Toyota, Subaru, Honda, Mitsubishi, BMW, Benz, and watercraft applications. New turbocharger and intake manifold programs underway.
No middlemen. We control the entire process from forged blank to finished product, ensuring quality and competitive pricing.
CNC-machined to exact tolerances with advanced coating options. Every component is measured, tested, and documented.
We support dealers and engine builders with technical data, application guidance, and reliable supply — not just parts.