CP Piston & Ring Set for Subaru EJ257 WRX STi - Bore (100mm) - Size (0.5mm) - CR (8.2)

CP Piston & Ring Set for Subaru EJ257 WRX STi - Bore (100mm) - Size (0.5mm) - CR (8.2)

 FEATURES 

-Deep valve relief depth accommodates high lift camshaft
-Made for +1mm valve sizes
-Custom skirt cam and barrel design
-Accumulator grooves
-High strength aluminum forgings
-High performance rings
-Fully CNC machined and balanced to +/- 1 gram
-Wrist pins included at no additional cost
-Double pin oilers, force fed oil ring
-Pick lock grooves for easy lock removal
-Pin fitting included

 Fitment :  

Car Make: Subaru
Car Model: SC7421: Impreza WRX STi / BC6609: Impreza Wrx Sti
Years: SC7421: 04-12 / BC6609: 02-12
Engine: SC7421: EJ257 / BC6609: EJ205 Ej255 EJ257
Compression Ratio: 8.2:1
Small End Width: .905
Rod Bolt: ARP 2000
Part Weight: 529
Big End Width: .843
Big End Bore: 2.166
Beam Type: H beam
Pin Size: 23mm
Compression Height: 1.208
Rod Length: SC7421: 130.5mm / BC6609: 5.141
Stroke: 79
Bore: 100mm
Material: 2618 Alloy
Bore Size: +0.5mm
Standard Pin (Included): 905-2500-18CP1S
Upgraded Pin (Not Included): 905-2500-20CP3C
Pin Locks (Included): None
Ring Part#: RS1658-3937-0