BTR Brian Tooley Racing LS Dual Valve Spring Kit (.660" Lift) with Steel Retainers -Fits LS1 LS2 LS3 LS4 LS6 L76 L92 L99 LQ4 LQ9 L33 LSA

Perfect springs for the lift in my engine

I had an issue after installing these springs and Michigan Motorsports and BTR both reached out and were able to help me solve the issue.

Pretty fast shipping. Have yet to have a negative experience with Michigan Motorsports

This company is awesome even when it came to error on customer end they are willing to help out in any way they can, definitely will be ordering more stuff from them in the future

Very nice I wished the valve steam seals went all the was to the base

Better put your big boy pants on when installing these springs! Without the right tools you'll lose an eye! Don't cheap out on a valve spring compressor that will break. Be sure to get the LS style compressor that bolts down through the rocker bolt. These springs have some serious pressure for serious applications!

All packed nicely installed nice can’t wait to get it on the motor used the set on a pair of 706 heads

Very Strong valve springs.