Supertech beehive valve springs for Ford RS 2.5L and compatible Volvo five-cylinder engines are single spring kits specified at 85 lbs seat pressure with 33.5mm free length. These beehive-style springs offer compact, lightweight valve control suitable for higher-revving applications where retained valve stability is important. Supplied as single kits, they are intended for rebuilds or cam upgrades that specify the listed spring rates and dimensions.
Supertech Ford RS 2.5L / Volvo 5cyl 85lbs/33.5mm Beehive Single Valve Spring Kit