ACL Race Main Bearing Set Standard Size Position 5 - 02-14 WRX / 04+ STI
ACL's main bearings are made of a softer metal so that you don't wear out your crank or engine block. Additionally, a thin layer of oil lubricates the connection between the bearings and the crank allowing the crank to "float" and reduce wear. Proper support via main bearings is crucial to prevent oscillations and wear that can damage the crankshaft and other components as the motor moves further out of balance.
Subaru main bearings are specific to either a #5 or #3 journal bearing position. Journal bearing position is not VIN or year specific, it must be known prior to purchase.
ACL Race Rod Bearings Oversized +.001in - 02-14 WRX / 04+ STI
The unique combination of design, metallurgy and engineering come together to deliver what drivers expect from high performance Trimetal engine bearings. ACL bearings are designed to withstand higher RPM conditions....
ARP Custom Age 625+ Head Stud Kit 11mm - 02-18 WRX / 04-18 STI
This newly formulated super-alloy demonstrates superior fatigue cycle life, tensile strength and toughness – with complete resistance to atmospheric corrosion and oxidation. ARP is the first to develop manufacturing and...