The Tial 41mm gate is a very popular wastegate. Its large enough to allow full control of boost on very high horsepower cars. A very safe buy if your debating on what size wastegate you need.
Additional Tial Info
Tial Externals are supplied with vacuum barb fittings, gaskets, valve seats, mounting hardware, and your choice of 1 free spring. The spring you select tells you the minimum amount of boost you’ll be able to run. For example a .8 Bar(11.6psi) will allow you to run a minimal of .8 Bar(11.6psi) You’ll need to use your boost controller to make adjustments in raising boost. All flanges are sold separately. Polished colors are usually in stock, we also try to stock red and black. Purble and blue are special order and will take about 5-7 business days longer.
Please specify spring pressure in the comments box after you check out on the very last screen.