When you take the plunge into a solid roller combination, taking the guesswork out of the valvetrain combination is a huge relief. For that reason, BTR is proud to introduce the SK427 valve spring kit. It is comprised of our all-new SR532 titanium retainers, PSI427RML Springs, complete valve seal kit, and our tried and true locator options. You have the ability to purchase these with either .505"/.060" locators (standard guides) or the .565"/.60" locators (most bronze guide applications).
**These kits do not come with valve locks. These can be sourced through PAC L8141-16
NOTE: Please check valve guide clearance if you exceed .650 - .660 lift.