Manley 04+ Subaru WRX STi (EJ257) STD Stroke 100mm +.5mm Bore 8.5:1 Dish Piston Set with Rings

MANLEY SUBARU EJ25 100 MM FORGED PISTON KIT 612005C-4
MANLEY SUBARU EJ25 100 MM FORGED PISTON KIT 612005C-4
Item# 612005C-4
Regular price: $571.00
Sale price: $542.99
Availability: Usually ships the same business day

Product Description

Manley Platinum Series Pistons

Manley Sport Compact - Platinum Series Lightweight Pistons: Manley pistons are machined of high strength 2618 material. Each design is lightweight yet robust enough to deliver long service life. Perfect ring groove to skirt squareness is achieved through our unique "one fixturing" manufacturing method that assures maximum horsepower. Round wire locks, tool steel wrist pins, and rings are included with every set at no additional charge.


FORGING

2618 alloy for maximum high temperature strength and fatigue resistance.

Part Number:

612005C-4  

Application:

SUBARU EJ257/EJ255

Bore Size:

100 MM

Stroke:

79 MM

Rod Length:

130.5 MM

Compression Height:

32.7MM

Pin Diameter:

23 MM

Dome / Dish Volume:

-22 CC

Weight:

425 G

Compression Ratio:

8.66:1 WITH 51CC HEAD

ATTRIBUTES

"Contour forgings" provide the optimum balance between strength and weight with no grain-interrupting internal milling.

Proprietary multi-step top ring groove machining process assures optimum control of the groove's size, geometry, flatness, and finish.

Value - added features such as a pressure balance groove included in all series.

All final turning is performed in one fixturing resulting in complete squareness of rings to the cylinder wall.

Federal Form-Scan gauging validates ideal skirt indexing to pinhole and skirt-to-skirt polarity.

Value - added features such as a pressure balance groove included in all series.

Precise pinhole machining results in an exact compression distance as well as precise lock ring groove spacing, size, and concentricity. 

Manley Sport Compact Platinum series pistons come complete with pistons, rings, pins, and locks


In The Package

99.5 mm Manley Platinum Series Pistons

Manley piston ring set
Piston pins and locks
Instructions/install guidlines