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

Beschreibung

Spool EJ257 WRX STI Forged Connecting Rods and CP Forged Pistons

• Compression Ratios: 8.2:1, 9.0:1 and 10.0:1
• Bore Sizes: STD 99.5mm, 99.75mm, 100mm and 100.5mm
• Pistons come with rings and gudgeon pins – No locks supplied, use factory locks
• Forged Billet 2618
• Pistons are supplied with NO Locks – use factory 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

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