Supertech valve keepers (also known as collets) are precision machined using high quality material to give a finished product worthy of Supertech’s established reputation.
Supertech Dual Valve Spring and Retainer Kit BMW M42
£656.32
Supertech Dual Valve Spring BMW S52
£16.16
Supertech 6mm Single Valve Lock conversion – 7 Degrees BMW S52
£2.43
