HEAVY DUTY VALVE SPRINGS CT90 CT110 ATC90 ATC110 ST90 CM91 CL90 S90 (S1138)
 
THESE ARE STIFFER, BUT SLIGHTLY THINNER AND WIDER COIL SPACING, SO THE COLLAPSED HEIGHT IS SHORTER THAN STOCK SPRINGS
 
 ,, THIS IS NEEDED FOR THE HIGH LIFT CAMS !

THESE WILL REPLACE STOCK SPRINGS ON STOCK CAM ENGINES TOO