Manley Turbo Tuff Pro Series I Beam Connecting Rod Set Subaru WRX 2015-2021 / BRZ 2013-2021 / Scion FR-S 2013-2016

Part #: 14431 - 4. Manley Turbo Tuff I - Beam Rods are crafted from forged 4340 aircraft - grade vacuum - degassed material. These rods are machined in - house in the USA to guarantee top - notch quality. After machining, each rod undergoes shot - peening and magnafluxing. The bores are perfectly round with no taper, and they use APR 2000 cap screws for maximum strength. Here are the specs: Center - to - Center is 5.090', Big End Bore is 2.087', Big End Width is.843', Pin Diameter is.866' (22mm), Pin Bore is.8671', and Gram Weight is 575.

Using this Manley connecting rod set is straightforward. First, make sure your engine is properly prepped and clean. Carefully install the rods following your engine's manual, ensuring they're placed correctly with the right orientation. When tightening the APR 2000 cap screws, use a torque wrench to apply the recommended torque for a secure fit. For maintenance, it's a good idea to check the rods regularly, especially after long - term use or high - stress situations. Look for any signs of wear, like scratches or unusual markings on the bores. If you notice any issues, it's best to have a professional mechanic take a look. Also, keep the rods clean to prevent dirt and debris from causing damage. Store them in a dry place when not in use to avoid rust and corrosion.