Kelford KVS58-BTX Extreme Racing Valve Springs – BMW B58 / S58
Kelford KVS58-BTX Extreme Racing Valve Springs – BMW B58 / S58
Kelford KVS58-BTX Extreme Racing Valve Springs are the high-energy valvetrain package for high-boost, high-horsepower BMW B58 and S58 3.0-litre inline-six builds.
Package
- Progressively wound PACALOY beehive valve springs
- Titanium retainers
- Precision-machined spring seats
- Designed to complement Kelford Stage 2 and Stage 3 camshaft combinations
- Intended for engine combinations exceeding 1000 hp where the complete valvetrain has been engineered accordingly
Kelford published setup data
- 105 lb seat pressure at 35 mm installed height
- 210 lb at 10.8 mm valve lift
- 23.6 mm coil-bind height
Installation
This is a motorsport valvetrain component. Installed height, open pressure, coil-bind clearance, retainer-to-seal clearance and camshaft compatibility must be measured by the engine builder. Confirm the latest Kelford data for the cylinder head, cam profile and intended RPM range before assembly.
Built by Boost & Tune can assist with B58/S58 valvetrain specification and engine assembly.
Supplier
Kelford Cams
Product System
- Engine Parts
Vehicle Fitment
- BMW 1 Series F20 Lci B58
- BMW 1 Series F21 Lci B58
- BMW 2 Series F22 Lci B58
- BMW 2 Series F23 Lci B58
- BMW 2 Series M240I G42 B58
- BMW 3 Series F30 Lci B58
- BMW 3 Series F31 Lci B58
- BMW 3 Series Gt F34 B58
- BMW 340I M340I G20 G21 B58
- BMW 4 Series F32 Lci B58
- BMW 4 Series F33 Lci B58
- BMW 4 Series G22 B58
- BMW 4 Series G23 B58
- BMW 4 Series Gran Coupe F36 Lci B58
- BMW 4 Series Gran Coupe G26 B58
- BMW 5 Series G30 B58
- BMW 5 Series Touring G31 B58
- BMW M2 G87 S58
- BMW M3 G80 G81 S58
- BMW M3 G80 S58
- BMW M3 Touring G81 S58
- BMW M4 Convertible G83 S58
- BMW M4 G82 G83 S58
- BMW M4 G82 S58
- BMW X3 G01 B58
- BMW X3 M F97 S58
- BMW X4 G02 B58
- BMW X4 M F98 S58
- BMW X5 G05 B58
- BMW X6 G06 B58
- BMW X7 G07 B58
- BMW Z4 G29 B58
Confirm chassis, engine, drivetrain and production-year compatibility before ordering.
Supplier Part Number
KVS58-BTX
Built by Boost & Tune Support
BBT can assist with fitment review, installation, supporting modifications, configuration and calibration requirements where applicable.