B58 / A90
The New King of Tuning: The BMW B58
The BMW B58 has earned its reputation as the “modern-day 2JZ.” Found in the M340i, Z4, and the Toyota Supra A90, this 3.0L inline-six is a powerhouse of potential. At Kelford Cams, we recognized early on that the B58 would be a cornerstone of the performance world. We have developed a comprehensive range of camshafts and valvetrain components to ensure that B58 owners can reach their horsepower goals with confidence.
Optimized Airflow for Big Power
The B58’s closed-deck design and robust bottom end mean it can handle significant boost, but the cylinder head needs help to breathe at higher power levels. Kelford engineers have designed B58-specific profiles that optimize the opening and closing events of the valves. This allows more air-to-fuel mixture into the combustion chamber and more exhaust gases out, significantly increasing the efficiency of both factory and aftermarket turbochargers.
Transform your B58 into a powerhouse. Shop our full range of cams and valvetrain now.
270/268 | Stage 1 Supra A90 MK5
270°/268° Stage 1 cams for engine with bolt on intake, exhaust and turbo upgrades. For an engine producing around 550-750hp running a 58-68mm turbo.
285/280 | Stage 2 Supra A90 MK5
285°/280° stage 2: For engine making 750hp-1000hp. Turbo sizing 62-72mm. Great with aftermarket intake plenums.
288/288 | Stage 3 Supra A90 MK5
288° Stage 3 drag racing: Engines making 1200hp+. Turbo sizing 72mm+ on high boost. Fuel type ethanol blend or methanol.
BMW B58/S58 Valve Springs
designed for S58 & B58 performance engines. Specifically engineered to match our Stage 1, Stage 2 and Stage 3 Camshafts
KVS58-BTX | B58 / S58 Extreme
For high boost, high horsepower builds. Engines making over 1000HP. Specifically designed for Kelford Stage 2 & Stage 3
Proven on the Street and the Strip
Whether you are chasing a 9-second quarter-mile in a Supra or looking for a more aggressive power band in your M340i, Kelford Cams has a solution. We offer multiple stages of camshafts, from mild street upgrades to full-race profiles. Every set of cams is manufactured to exacting tolerances, ensuring they work seamlessly with BMW's complex variable valve timing systems. We don't just make parts; we make the components that define the world's fastest B58 builds.
Kelford Cams is a global leader in B58 development, offering the perfect synergy between BMW's mechanical design and racing profiles.
