For serious horsepower 13B Mazda rotary engines, these 1/2" stud kits will help tie the block together, giving much better structural rigidity to your engine. M10x1.0 thread on one end, for a perfect fit into the factory front plate thread, and a 1/2" body and thread the other end for supreme strength.
Used in some of the worlds fastest rotary engines.
*Note* - These studs will require professional engine machining to fit.
Price is per stud
Item supplied with stud and nut as pictured.