HEAVY DUTY VALVE SPRINGS WIDER COIL SPACING FOR HIGH LIFT CAMS (S1129)
 
HEAVY DUTY VALVE SPRINGS WITH WIDER COIL SPACING FOR HIGH LIFT CAMS IN 50 & 70 HEADS (GREAT STOCK REPLACMENT) (S1129) 
 
 
WE RECOMMEND USING S1129 HD VALVE SPRINGS AS THEY HAVE 
 
THE LEAST CHANCE OF TOTAL COLLAPS,, OR IN OTHER WORDS
 
BOTTOMING OUT COIL TO COIL.
 
THE OUTTER SPRING IS 30MM TALL
 
THE INNER SPRING IS 29MM TALL
 
LIFAN 90 110 120 and 125 HEADS DON'T NEED THESE AS THEY ARE DIFFERENT AND ARE GOOD AS IS FOR THE HIGH LIFT CAMS...
 
ALSO WORK TO REPLACE STOCK 50 AND 70 STOCK SPRINGS AND ADD SOME MORE TENSION