Manley's H-Beam Rods for the Mazdaspeed MZR DISI engine are a great starting point for reinforcing your Mazdaspeed 3 or 6 with forged internals without breaking the bank. The H Beam can take a beating with a high torque and high horsepower setup up to about 500-600 horsepower and torque. They are available with the unique factory sized 22.5mm wrist pin for easy fitment with stock style pistons along with the more common 22mm wrist pin for use with a wide variety of other pistons. Each rod is matched very closely to each other in weight so that the rotating assemble is closely balanced. Each rod is precisely machined to exact tolerances specifically for the Mazdaspeed engine.