Manley 03-06 Evo 8/9 (7 Bolt 4G63T) 86mm +1mm Over Bore 9.0:1 Dish Pistons w/ Rings

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.

4G63 / 4G64 - Turbo Tuff Design Features:
* 2618 high strength material
* 2.250 x .250" wall 9310 alloy pin included P/N 42552
* Pressure balance groove
* Will accommodate +1mm valve sizes
* Vertical Gas Ports designed for high HP Race Engines
* Premium Steel top rings with Napier seconds and round wire locks included
* Recommended piston clearance .0035" measured 1.100" from the bottom of the oil ring

Common Features:
* Crown Thickness: .320"
* Top Ring: 1.2mm, .350" down
* Second Ring: 1.2mm
* Oil Ring: 2.8mm
* Valve Notches: .205" Int., 205" Exh.
* Pin Included: 9310 Alloy P/N 42552
* .250" wall, 139 grams, 2.250" long, 22mm dia.
* Round Wire Locks: P/N 42270

Specifications (88mm STD STROKE 2.0L):
* Bore Size (mm): 86
* Over Size: +1.0mm
* Rod Length: 150
* Stroke: 88
* Comp. Distance: 1.375"
* Dome Volume (cc): -8
* Cylinder Head (cc): 47 / 43
* Comp. Ratio: 9.0 / 9.5
* Piston Type: Dish
* Piston Wt / Gms: 358
* Included Ring Set: 46860-4