Manley Pro Series “I” Beam Rods Sets. Forged from 4340 aircraft quality vacuum degassed material, Shot peened after machining and 100% magnafluxed. Cap fasteners are 3/8″ ARP2000 cap screws, specifically designed to handle high horsepower applications when using turbos and or nitrous. Horsepower range for these rods is 1,000+ H.P.

Specs:
Center-to center: 5.141″
Big End Bore: 2.165″
Big End Width: .840″
Pin Diameter: .9055″ (23mm)
Pin Bore: .9063″
Gram Weight: 613

Fits: Subaru WRX EJ205/ STI EJ257