the hks gt ii wastegates are the latest in wastegate technology. they feature a lower body cast from stainless steel and an anodized purple upper case machined from billet aluminum. the gt ii wastegates weighs approximately 2/3s the weight of the original gt wastegate and are significantly smaller in height and width. their compact size combined with the gt iis v-band inlet and outlet flanges allows for versatile mounting in tight spaces. --- gt ii wastegates also include additional wastegate springs which allow for different base boost level starting points. a special tool is also included which allows for the simple installation of the extra wastegate springs. hks gt ii wastegates are available with either a 50mm or 60mm stainless steel valve, and have base boost levels that range from 0.8kg/cm2 (11.6psi) 2.0kg/cm2 (29.0psi) and 0.6kg/cm2 (8.5psi) 2.1kg/cm2 (29.9psi), respectively. like all hks wastegates, boost can be raised above the base boost setting by using an hks evc or vbc boost controller.