MAP o2 DUMP downpipe
I would assume they can handle the lift of the GSC S2 cams, but better double check.
For my build I was saddened to realize that the Manley springs (which were super beefy for the 8/9) wouldn't handle my cams lift so I went with the supertechs.
For my build I was saddened to realize that the Manley springs (which were super beefy for the 8/9) wouldn't handle my cams lift so I went with the supertechs.
I read somewhere the GSC springs/retainers are good for 11000 rpm up to 12.5mm lift (correct me if im wrong)
I was told that they were designed to be used with the S2 cams, that's why I went with them.





