History

Welcome to Longjian Modified Auto Part

JA Modified

“Leading Engine Performance with Forged Excellence – Your Elite Source in China”
Discover the epitome of engine enhancement with over 21 years of expertise at JA MODIFIED AUTO PARTS. We harness unparalleled forging technology to craft pistons and rods that define the future of high-performance and durability. Our commitment to excellence is manifested in components that bring the utmost in resilience and strength, propelling your vehicle beyond the ordinary.
Witness the perfect blend of quality and value. Our offerings epitomize the pinnacle of forged precision, comparable to the best in the industry, at a cost that accelerates your competitive edge. Dominate the race track and elevate street performance with parts that have become the hallmark of winners and aficionados alike.
JA MODIFIED AUTO PARTS is more than a brand; we are innovators and enablers. Customize your driving experience with our bespoke piston and rod solutions, backed by in-depth technical support that ensures seamless integration into your vehicle. From concept to execution, our tailored components are designed to help you claim victory and excel in every challenge.
Trust us to empower your automotive aspirations with parts that are meticulously designed, rigorously tested, and proven in the crucible of competition. Because at JA MODIFIED AUTO PARTS, we’re not just building parts – we’re engineering dreams.

We offer a wide range of services to meet your business needs

            Longjian Modified Auto Part(JA Modified) is a leading professional engine parts manufacturer, Longjian Modified Auto Part(JA Modified) specializes in Forged piston and connecting rod business in the racing and performance market.We offer engineering services from design development to mass production.Our product engineers, CAD/CAM engineers, and QA engineers work as a team to provide optimized solutions for our customers.

LOW MOQ

Allow you to start your own Brands with lowest cost

Fast Delivery

Adequate raw material inventory and high capacity ensure short lead time for you

Cheaper Price

Thanks to the full supply chain and market in China

Extensive Sample Stock

In order for you to test products shortly, we stock full series of samples

Quick Response

7/24 for you to know your needs and satisfy you      

Fully Customization

Support from product customization to brand packaging personalization