Subaru EJ255 & EJ257 Sport Compact Pistons by Wiseco
Own a Subaru EJ255 or EJ257 and plan on building a motor? Wiseco is proven to make some of the best pistons on the market!
Featuring valve pocket designs that allow maximum flow around valve, also allowing oversized valves and high lift cams to be utilized. Piston crown shapes designed to promote maximum intake charge efficiency thru scavenging mixture "cross flow" during intake and exhaust valve overlap. More fuel and air equals more horsepower!
Their pistons are designed to optimize squish or quench during compression combustion cycle event, resulting in resistance to detonation and pre-ignition. The end product is longer engine life and increased horsepower potential.
Stroke: 3.110" (79mm)
Rod: 5.137" (130.5mm)
Comp Ht: 1.209" (30.7mm)
Head cc's: 51
Gasket Thickness: 0.021" (0.5mm)
Deck Clearance: 0.012" (0.30mm)
Block Ht: 7.913" (201mm)
Comp Ratio: 9.0
2618 Aerospace Alloy for Superior Strength to Weight Ratio
ArmorGlide® Skirt Coating Increases Power and Reduces Piston Rock
Strutted Forging & Armor Plating for Improved Strength
Resistance to detonation and pre-ignition.
Longer engine life and increased horsepower potential.
Maximum ring seal minimizes blow-by and oil consumption.
Most Wiseco Pistons have offset pins. (Pins must be offset, same as OEM, for quietest operation).
2006 - 2014 Subaru WRX
2004 - 2020 Subaru STI
2004 - 2013 Subaru Forester XT
2005 - 2012 Subaru Legacy GT
2005 - 2009 Subaru Outback XT
2004 - 2006 Subaru Baja XT
2006 - 2006 Saab 9-2x
What's In The Box?
1 - Sport Compact Piston Kit
Piston Pins and Rings
WISECO warrants this product will be free from defects in material and workmanship for thirty (30) days following date of original purchase.