see also:
Engine Valves
Forged Pistons
Camshafts
Connecting Rods
Crankshafts

Edelbrock
Kent Cams
Manley
Performance Springs
Performance Springs Inc, New Huson, USA

Edelbrock
Made of highest quality spring wire and precision wound to close tolerances, our Sure Seat Valve Springs are designed for use on original equipment cylinder heads with Edelbrock Performer-Plus, Performer RPM and Torker-Plus cam shafts.

Kent Cams
Put simply Kent Cams are manufacturers of all types of camshafts, specialising in motorsport, short production runs, pre production prototypes and one off’s, however our in house expertise extends to valve retainers, valve springs, adjustable cam pulley’s, valve guides, chain gears, poly-v belt pulley’s, cam followers and shims.

Manley
Manley valve springs are wound from super clean alloy. Each design minimizes stress to ensure long service life with high lift camshafts. Retainers are manufactured in our own double spindle CNC machines to exacting tolerances and precise installed height specifications. Valve locks are manufactured in our own Swiss turning centers with rigid control over the all-important angle to ensure precise mating with the retainer.

Performance Springs
Performance Springs is the UK's premier manufacturer of high quality and precision valve spring products. The company specialises in the design, development, manufacture and testing of high quality made to order valve spring products.

Performance Springs Inc, New Huson, USA
An industry leader since it was established In 1996, PSI (Performance Springs Inc) has worked continuously to expand its range of specialised valve sprrng applications. Currently offering springs for circle track, drag and road racing, PSI Springs also feature heat- treating, nitriding and the new Max Life surface preparation process for various applications