The Supertech single valve spring kit is specified for the Nissan Skyline RB25 DOHC 24V engine with hydraulic lifters and is supplied as a kit of individual springs for that application. Intended to match the factory spring geometry for RB25 cylinder heads, the kit supports proper valve motion and seating when performing rebuilds or maintenance on the specified Skyline powerplant.
Supertech Nissan SKYLINE RB25 DOHC 24V (w/Hydraulic Lifters) Single Valve Spring Kit