By locking the bolt into place

as well as hill climb

4L B58 Stroker Kits have stood up to the tests and trials of high horsepower applications time and time again

optimizing fuel delivery at the correct crank angle for maximum power

Lightweight titanium retainers reduce valvetrain mass and improve engine response

Valve Spring Compressor Tool, BMW M50 M52 S50 S52 Coolant Tank By locking the bolt into5150 AutoSport Valve Spring Compressor Tool Kit The 5150 AutoSport Valve Spring Compressor Tool Kit is designed to make valve spring replacement fast, simple, and hassle free. Whether you're in your home garage or at the race track, this tool allows you to replace valve springs without removing the cylinder head or pulling the engine from the vehicle. Perfect for routine maintenance, camshaft upgrades, or replacing a broken valve spring, this tool