Manley Piston 99.5mm Bore Grade A / 79mm Stroke | Subaru EJ25 (612000CA-1)

Manley Piston 99.5mm Bore Grade A / 79mm Stroke | Subaru EJ25 (612000CA-1)

Manley Performance
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Manley Piston 99.5mm Bore Grade A / 79mm Stroke

Manley pistons are machined of high strength 2618 material. Each design is lightweight yet robust enough to deliver long service life. Offset wrist pin design is utilized for quiet start-ups. Perfect ring groove to skirt squareness is achieved through our unique "one fixturing" manufacturing method that assures maximum horsepower. All pistons come with moly coated skirts. Round wire locks, premium chrome moly wrist pins, and premium steel top ring sets from Total Seal are included with every kit at no additional charge. 9310 alloy upgraded wrist pins are available. Recommended clearance: .003" for mildly boosted and .0035" for highly boosted measured .850" (79/83mm Strokes) and 1.100" (75mm Stroke) from the bottom of the oil ring groove.

Features

  • Bore: 99.5mm (Grade A)
  • Rod Length: 5.137"
  • Stroke: 79mm
  • Comp. Distance: 1.209"
  • Dome Volume: -22cc
  • Comp. Ratio: 8.5:1
  • Weight: 395g

Applications

  • Subaru EJ25

What's In The Box?

  • (1) Piston with rings

Warranty

  • Manufacturer Standard Warranty

Downloads

  • n/a

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Customer Reviews

Based on 2 reviews
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J
Jacob Spidle
Piston rings are different from grade B

I ordered two grade A pistons and two grade B, and the oil rings are different between the two. It's a different procedure to install them, but they have the same instructions supplied in the box. So I was very confused, and pulled an already installed piston to make sure I did it correctly - perhaps it was an older model. For the A grade there was no notch for the oil ring tab, so I put it in the oil hole, similar to OEM. Better instructions for the newer type/grade B are here
http://www.manleyperformance.com/dl/tech/Subaru-Piston-and-Ring-Installation.pdf

A
Ammar
maperformance is a life saver

I ordered pistons for my eg257 build from well known seller online and they messed up my order and sent me 3 correct and one wrong Piston. After a long back and forth with them i have up and MAperformance saved me. They sent me the part as soon as possible. Thank you maperformance.