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The FA20 naturally aspirated platform does not need multi-plate capability
This is achieved by maximizing airflow through the smooth intake tube which has been designed to limit turbulence and pressure under acceleration
The flexibility to adjust makes the bar appropriate across a wide range of use cases
1/8-27 NPT Caliper fit thread
3-inch inlet
PERRIN Lightweight Crank Pulley w/o AC Black - 2002-2014 Subaru WRX / 2004-2021 STI PDM_suspension-control-kits The FA20 naturally aspirated platformRallySport Direct carries a great selection of aftermarket performance products brought to you by PERRIN Performance. Here, you are looking at the PERRIN Performance Lightweight Crank Pulley Without A C. This crank pulley has been designed to reduce the rotational mass of your engine to promote faster revs, better response, with increased performance. Additionally, this crank pulley version has been designed for those who have removed the AC belt