Subaru EJ257 WRX STI Rebuild Kit with Spool H Beam Conrods and CP Forged Pistons

Beschreibung

This Rebuild Kit includes the following quality parts:

• Spool Forged H Beam Conrods
• CP Pistons
• Pistons come with rings and gudgeon pins – No locks supplied, use factory locks
• 2x Cometic MLS Head Gasket
• ACL Race Series Main Bearings – STD or 0.25mm
• ACL Race Series Big End Bearings – STD or 0.25mm

EJ257 Pistons are available in:

• Compression Ratios: STD, 8.2:1, 9.0:1 and 10.0:1
• EJ257 Bore Sizes: 99.5, 99.75, 100 and 100.5mm
• Pistons come with rings, gudgeon pins and pin locks

Spool Connecting Rods Feature:

• ARP 2000 fasteners (L19 fasteners are available as an upgrade)
• High tensile 4340 forged steel
• 2 Piece forging
• Hardness of HRC36-42
• Dowelled caps for precision alignment
• X-RAY & Sonic tested
• Quenching and heat treated
• Shot peened
• 100% Magnafluxed
• Weight Matched Sets +/- 1 gram
• Vacuum degassed to remove impurities

CP Pistons standard features include:

• 5310 gudgeon pins (9310 thicker wall thickness pins are available as an upgrade)
• Deep valve reliefs accommodate high lift camshafts
• Larger valve reliefs for +1mm valve sizes
• Custom skirt cam and barrel design
• Accumulator grooves
• High strength aluminium forgings
• High performance rings
• Fully CNC machined and balanced to +/- 1 gram
• Wrist pins included
• Double pin oilers force fed from oil ring groove
• Pick lock grooves for easy lock removal
• Pin fitting included

Note: We recommend Joe Gibbs Break in Oil for all new engines.