Supertech beehive valve springs for BMW S65 and S85 engines are provided as a set of 40 springs intended for use with factory retainers and valve seats. The beehive profile reduces valve train mass compared with conventional springs, helping compatible high-revving V8 heads maintain control of valvetrain motion when used with the specified factory hardware in rebuilds or performance top-end assemblies.
Supertech BMW S65/S85 Beehive Valve Spring - Set of 40 (Use w/Factory Retainer & Base)