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KSR Race Parts

BTR .650" ULTIMATE RPM SPRING KIT WITH TITANIUM RETAINERS - SK703

BTR .650" ULTIMATE RPM SPRING KIT WITH TITANIUM RETAINERS - SK703

Regular price $359.99 USD
Regular price Sale price $359.99 USD
Sale Sold out

BTR Ultimate RPM Spring kit
Sk703- .650" max lift
BTR designed this valve spring kit for use in higher rpm combos 
,especially for use with added cylinder pressures found in boosted applications.
This kit was designed to help keep your valve train stable in the higher rpm ranges found in today's technically advanced valvetrain systems.
Paired with light weight valvetrain components and the proper cam lobe design, we've run these past 9000 rpm in certain race applications.
 Spintron tested and run in some of the fastest hydraulic roller LS engines on the planet ,this kit has proven itself over and over again.

 

 

Note: Due to the higher open psi achieved at the recommended install height, this spring is not recommended for daily driving with stock rocker arms as rocker pad or valve tip wear may occur.

 

Kit includes the following:

SP010-16

SR008-16

SLS135 bronze guide  OR SLS136 factory guide  Locaters

VS LS Kit

VL7°8MMBLK-32 

SS030-16 shims

SS015-16 shims

 

Spring specs are as follows:
•200 lbs @ 1.700"
•500 lbs @ 1.050"
•Coil bind @ 1.000"

Emissions Regulations

Some of the parts sold on our store are illegal to install on an emissions controlled vehicle. Please check with your local state / city emissions office to verify whether this item is legal for installation on your vehicle.

The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles:

1965 and older U.S. manufactured California Certified vehicles

1967 and older U.S. manufactured Federally Certified vehicles

1967 and older Foreign manufactured vehicles

The following vehicles are considered Emissions Controlled Vehicles:

1966 and newer U.S. manufactured California Certified vehicles

1968 and newer U.S. manufactured Federally Certified vehicles

1968 and newer Foreign manufactured vehicles

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