Fitment Information BMW B58 Engines (2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023) Toyota Supra B58 (2020, 2021, 2022) Specs & Features ArmorGlide skirt coating Forged aluminum 94.6 mm. bore size 33.30 Compression Height When adding power to BMW's B58 engines, the pistons are a potential point of failure. Wiseco provides an upgraded high-strength piston for this specific application. Wiseco pistons are forged from aerospace-grade aluminum for ultimate quality and strength. This is important for high-performance race applications, where increases in horsepower and compression will stress the components much further than a stock engine.