Manley Size (STD) Stroke (79mm) Bore (99.50mm Grade B) SINGLE Piston w/ Rings WRX STI EJ257 2004-2021 Wheel Offset_45mm The stage 1 kit includes

The stage 1 kit includes a Competition Clutch OE style pressure plate and a performance organic disc

Part #: TR-EM1003

79" inch diameter (200mm)

Rated to 400whp this kit includes a performance pressure plate

Manley Size (STD) Stroke (79mm) Bore (99.50mm Grade B) SINGLE Piston w/ Rings WRX STI EJ257 2004-2021 Wheel Offset_45mm The stage 1 kit includesPart #: 612000CB 1 Manley Subaru pistons are made from high strength 2618 material and manufactured to provide DROP IN installation and correspond to the OEM Grade Range A or B bore sizes. To order these pistons simply select the appropriate mix of grade range pistons for the engine block's requirements. The proper clearance is designed into each grade range. These pistons come standard with Premium Chrome Moly 0. 180" wall pins suitable for moderate