King Engine Rod Bearings 0.25 Oversized 52mm Journal Size Subaru WRX / STI EJ20/ EJ22/EJ25 2002-2021 | CR4125XPG0.25 CivicSi_2012-2015 14% Increase in piston diameter

14% Increase in piston diameter over previous version for better response

Stand alone-No controller needed

Take note of it

This is an issue when the WRX is bone stock and becomes an even bigger issue when you start to modify it

GrimmSpeed's attention to detail during development and overall exhaust knowledge allow them to make the best possible upgraded version of the factory alternative

King Engine Rod Bearings 0.25 Oversized 52mm Journal Size Subaru WRX / STI EJ20/ EJ22/EJ25 2002-2021 | CR4125XPG0.25 CivicSi_2012-2015 14% Increase in piston diameterYour high performance engine build deserves the most advanced internal components designed to withstand the highest loads and RPMs. So what makes King Engine Bearings track tough and street smart? All King bearings are designed with the closest wall tolerances in the industry, with all shells matched to 0. 0001". Greater rod bearing height improves bearing to bore contact and heat transfer, greatly reducing spin potential at high RPMs. Utilizing