Subaru OEM EJ257 Nitride Treated Crankshaft Subaru STI 2004-2021 / WRX 2006-2014 | 12200AA430 Wheel Bolt Pattern_4x114.3 Bearings with extra oil clearance

Bearings with extra oil clearance will absorb the stress of higher horsepower motors greater

Aluminum AN adapter fittings and hose ends

The DTC-60 series has a slightly lower friction coefficient and bite compared to DTC-70 but will last longer

It is truly versatile

Subaru OEM EJ257 Nitride Treated Crankshaft Subaru STI 2004-2021 / WRX 2006-2014 | 12200AA430 Wheel Bolt Pattern_4x114.3 Bearings with extra oil clearancePart #: 12200AA430 This is the Nitride treated crankshaft out of the 2010 Subaru WRX STi EJ257. Nitride treatment hardens the surface of the crank, which prevents scoring caused by a piece metal getting stuck between the bearing and the crank. By increasing the hardness of the crankshaft surface, any material which gets caught between the new surfaces is simply ground down and filtered out through the oil, potentially preventing bearing failure. This