Guangzhou Longjian Modified Auto Parts Ltd is a professional leading engine parts manufacturer,the JAmodified brand was established in the early days of the company.JAmodified specialize for forged piston and connecting rod business on 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.

We have contributed tremendous amount of beautiful forged pistons and connecting rods to the market through many exclusive projects , including prototype making , piston modifying and developing , small and medium quantity production.We are also ODM for worldwide famous brands.Welcome your order and visit!