BMW 3.0CS Parts & Accessories

BMW 3.0CS Parts & Accessories

The BMW 3.0CS is the definitive E9 coupe, combining the 3.0-liter M30B30 inline-six with the most beautifully proportioned body BMW has ever produced. These grand touring coupes are highly collectible, and sourcing correct, quality parts is the cornerstone of any proper 3.0CS build or restoration.

Popular Upgrades

Performance owners install free-flow exhaust headers and cat-back systems to unlock more of the M30B30's 180 hp potential. Suspension refreshes with polyurethane bushings and adjustable dampers transform ride and handling, while stainless brake lines and quality pads bring braking in line with the car's performance character.

How much power can the BMW 3.0CS M30 make with modifications?

The stock M30B30 produces around 180 hp. With exhaust headers, a Weber or Dellorto carburetor conversion, and a mild cam, outputs of 200-220 hp are achievable while maintaining street reliability. Further gains require more extensive engine work.

What suspension setup works best for a 3.0CS used in touring events?

For vintage touring and driving events, a street/sport coilover kit combined with a front strut tower brace and polyurethane bushings throughout gives excellent balance. Avoid ultra-stiff race setups that stress the E9 unibody and compromise the car's long-distance comfort.

Upgrade your BMW 3.0CS the right way at Black Ops Auto Works. Shop our exhaust, suspension, and brakes collections.