CP does not include clips with these Subaru pistons, they recomend the use of the factory clips that come in the OEM Complete Engine Gasket Set from Subaru.
These are CP Pistons for Subaru EJ25/EJ257 2.5L engines. CP makes several Subaru part numbers and we try to keep many of the popular part numbers in stock. Just select which part number best fits your application from the list below, and include that part number in the paypal notes section of your payment.
CP Pistons is one of the most trusted names in the industry, and for good reason. Their extensive shelf catalog provides the user with many of the options that you'd normally be resigned to going to a custom piston for. Their standard offering already includes Dual Pin Oilers - providing double the amount of oil to the wrist pin, radiused valve relifs, and the pin fitting final hone on the wrist pin bore. They even include an Accumulator Groove as a standard option. This provides a small pocket for the combustion gasses to collect after the first ring, reducing ring flutter and providing a better seal allowing more downward force on the piston A.K.A. - make more power. All pistons come balanced within one gram, include pin lock grooves and wrist pins at no additional charge.
Have a question about bore size or compression ratio?
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Email us now at Sales@RealStreetPerformance.comWhether you damaged your stock internals, you are building an all out race engine, or you are just looking to upgrade your stock bottom end. CP is one of the most durable and reliable options on the market period.
COMES WITH RINGS AND WRIST PINS!CP Piston Part Numbers Subaru Pistons | Part # | Application | Bore Size | Compression Ratio |
| SC7410 | EJ25 DOHC | 100.00mm (+.020" Overbore) | 8.5:1 |
| SC7420 | EJ257 WRX STi | 99.50mm (Standard Bore) | 8.5:1 |
| SC7422 | EJ257 WRX STi | 99.75mm (+.010" Overbore) | 8.5:1 |
| SC7421 | EJ257 WRX STi | 100.00mm (+.020" Overbore) | 8.5:1 |
