Supertech valve spring kits feature high-quality springs made from premium materials

and are engineered by one of the most respected names in motorsport to improve performance and reliability

CAT Cams provides reliable camshaft kits built to optimize naturally aspirated or forced-induction M62 engines

1988 - 1992       BMW E34       525i

Ferrea also offers precision CNC-machined retainers designed for optimal strength and stability

CP Forged Piston Set, BMW M30 B35 M54B30 Supertech valve spring kits featureCP Carrillo is one of the most globally respected manufacturers of aftermarket pistons, known for their strict quality, durability, and range of performance applications. CP Pistons are designed to improve engine power and reliability by using high strength, lightweight materials and advanced engineering. Here are some of the features of CP Carrillo pistons: Lightweight design: CP Carrillo pistons are made from high strength, lightweight materials,