BNR Valve Springs 1.4L Cruze Sonic Trax Spark Vanderhall

BNR Valve Springs 1.4T Cruze/Sonic. It’s common knowledge that the factory valve springs on the 1.4T motors are weak. At boost pressures greater than 21psi you will begin to see valve float after 5500RPM, where the valves are no longer closing fully. These valve springs are much stronger and have been torture tested extensively and […]