The same beefy 1.75" diameter, 0.120" wall DOM construction as the "M1" Hard Core, but with clearance for a factory glass window. It will interfere with the side latches on a hardtop.
In order to work with glass windows, this bar uses harness tabs instead of a harness bar. However, some SCCA regs do not allow harnesses to share mounting points. For that situation, we have the bolt-in harness bar. Fits all 1990-05 Miatas.
Compatible with stock glass windows. If you have an aftermarket top with a glass window that is larger than stock, you can have the diagonals modified for extra clearance. The latter costs an extra $20 - please call us to order.