Pro Series I-Beam Turbo Tuff Rods
Fits Subaru WRX EJ205 / STI EJ257
Center to center: 5.137”
Big end bore: 2.165"
Big End width: .840"
Pin Diameter: .9055 (23mm)
Pin Bore: .9063"
Avg. Gram Weight 560
Torque Specs: 60 ft./lbs. with ARP lube
Recommended Bolt Stretch .0058”-.0062” with ARP lube
Forged from 4340 aircraft quality vacuum degassed material
Shot peened after machining to MIL spec and 100% individually magnafluxed
Specifically designed to handle high horsepower applications when using turbos and/or nitrous
Fasteners are 3/8”
Flywheel horsepower range for these rods in a 4 cylinder application is 1,000+, for a 6 cylinder application
the range is 1,250+ and for a 8 cylinder application the range is 1,500+