ACT Heavy Duty Perf Street Sprung Clutch Kit w/ Streetlite Flywheel Honda Civic Si 2017-2022 | HC10-HDSS Wheel Bolt Pattern_6x114.3 This is the OEM 11mm

This is the OEM 11mm STI oil pump for Subaru 2

and it sits a little lower

Default Spring Rates: Front 16K

Part #: AV2017905H35BZ

and has pleats that make for uneven airflow

ACT Heavy Duty Perf Street Sprung Clutch Kit w/ Streetlite Flywheel Honda Civic Si 2017-2022 | HC10-HDSS Wheel Bolt Pattern_6x114.3 This is the OEM 11mmFitment Information: 2017 2020, 2022 Honda Civic SI Note: Conversion kit. Must use ACT flywheel (included in kit). Features: ACT's HC10 HDSS kit features a sprung, performance street clutch disc paired with their ever popular Heavy Duty pressure plate. What does this mean for you? Well, that means that you will have a light to moderate pedal effort with a smooth positive engagement and the ability to handle up to 363ft lbs of torque on your Civic Si.