B58 Gen 1

Maximizing the First Generation BMW B58

The Gen 1 B58 engine, found in F-series BMW models like the M140i and 340i, has quickly become a legend for its tuning potential. Kelford Cams has developed a range of products specifically for the Gen 1 B58 to help owners push past the limits of the factory valvetrain. While the Gen 1 B58 is a fantastic engine, the factory camshafts are designed with a focus on fuel economy and emissions.

Overcoming the Flow Bottlenecks

Kelford technicians have designed profiles that increase valve lift and duration. As tuners push the Gen 1 B58 toward the 500hp mark, the factory valve springs can struggle to keep up. We offer matched valvetrain packages that ensure your valves stay under control even at the limit. We use the highest quality materials in our Christchurch facility to ensure that every B58 component can withstand the heat and pressure of competitive driving.

Take your B58 further. Shop our Gen 1 performance range today.