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Wiseco Pistons
Wiseco Pistons: Mitsubishi/Eagle Int'l  Market

Includes: moly coated skirts, rings, wrist pins & circlips.
*
Non-coated, not supplied with rings (you can order RINGS separately here)

Wiseco is world renown for their work building race winning pistons for compact engines featuring small bores, multi-valves, and high RPM's applications for many years.
Features:
  1. Stocking Pistons now come coated on the sides from the factory
  2. Valve Pocket designs that allow max flow around valve, also allowing oversized valves and high lift cams to be utilized.
  3. Piston crown shapes designed to promote max Intake Charge efficiency thru scavenging mixture 'Cross Flow' during intake and exhaust valve overlap. More fuel and air equals more horsepower.
  4. Pistons 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.
  5. Complex piston skirt profiles that reduce power robbing friction, yet promoting stability in bore for optimum ring seal.
  6. Precision machined ring grooves with proper orifice/accumulator volume using calculated groove root diameters and axial widths, featuring excellent surface finish and flatness providing maximum ring seal and minimizes blow-by and oil consumption.
  7. World class forging facility that utilizes the latest technologies featuring complex forged shapes, advanced materials, and featured aligned grain flow technology.

We're the LARGEST supplier of Forged Custom Pistons and Connecting Rods for the International Import Market. Don't see what you need below? Email us your Piston and Rod needs!

 
The following applications fit the pistons listed in the red table below:
Engine Code: 4G63
Galant  81-91
L 300  85-91
Lancer  80-91
Spacewagon  86-91
Engine Code: 4G63
Eclipse  91+up
Eclipse D22, Eclipse D32, Spacewagon  92+up
Galant E33  88-90
Galant E39  90-93
   
Mitsubishi  2.0 Ltr. 6-bolt  21mm Pin
Part # Price/
Set
Bore
MM/Inch
Oversizes Stroke Rod C.H. Head cc's Dome/Dish
Volume
Comp Ratio Pin
Dia.
Notes Buy Now
Inches E500M850 $519* 85.00/3.346 Std. 3.465 5.905 1.378 47 -17 8.1-8.3 .827 1,3,5
Metric E500M855 $519* 85.50/3.366 .020 88 150 35 47 -17 8.1-8.3 21mm 1,3,5
  E500M860 $519* 86.00/3.386 .040 same as above 1,3,5
  E500M865 $519* 86.50/3.406 .060 1,3,5
 
The following applications fit the pistons listed in the red table below:
Engine Code: 4G63
L 300  92+up
     
Mitsubishi  2.0 Ltr. 7-bolt  22mm Pin
Part # Price/
Set
Bore
MM/Inch
Oversizes Stroke Rod C.H. Head cc's Dome/Dish
Volume
Comp Ratio Pin
Dia.
Notes Buy Now
Inches K548M85 $519* 85.00/3.346 Std. 3.465 5.905 1.378 47 -17 8.1-8.3 .866 1,3,5
Metric K548M855 $519* 85.50/3.366 .020 88 150 35 47 -17 8.1-8.3 22mm 1,3,5
  K548M86 $519* 86.00/3.386 .040 same as above 1,3,5
  K548M865 $519* 86.50/3.406 .060 1,3,5
  K548M87 $519* 87.00/3.425 .080 1,3,5
 
The following applications fit the pistons listed in the red table below:
Engine Code: 4G63
Galant  81-91
L 300  85-91
Lancer  80-91
Spacewagon  86-91
Engine Code: 4G63
Eclipse  91+up
Eclipse D22, Eclipse D32, Spacewagon  92+up
Galant E33  88-90
Galant E39  90-93
   
Mitsubishi  2.0 Ltr. 6-bolt 21mm Pin, 9.0:1 comp version
Part # Price/
Set
Bore
MM/Inch
Oversizes Stroke Rod C.H. Head cc's Dome/Dish
Volume
Comp Ratio Pin
Dia.
Notes Buy Now
Inches E501M850 $519* 85.00/3.346 Std. 3.465 5.905 1.378 47 -10 8.9-9.1 .827 1,3,5
Metric E501M855 $519* 85.50/3.366 .020 88 150 35 47 -10 8.9-9.1 21mm 1,3,5
  E501M860 $519* 86.00/3.386 .040 same as above 1,3,5
  E501M865 $519* 86.50/3.406 .060 1,3,5
 
The following applications fit the pistons listed in the red table below:
Engine Code: 4G63
L 300  92+up
     
Mitsubishi  7-bolt 2.0 Ltr  22mm Pin, 9.0:1 comp version
Part # Price/
Set
Bore
MM/Inch
Oversizes Stroke Rod C.H. Head cc's Dome/Dish
Volume
Comp Ratio Pin
Dia.
Notes Buy Now
Inches E503M850 $519* 85.00/3.346 Std. 3.465 5.905 1.378 47 -10 8.9-9.1 .866 1,3,5
Metric E503M855 $519* 85.50/3.366 .020 88 150 35 47 -10 8.9-9.1 22mm 1,3,5
  E503M860 $519* 86.00/3.386 .040 same as above 1,3,5
 
The following applications fit the pistons listed in the red tables below:
Engine Code: 4G63
Mitsubishi Eclipse/Eagle Talon  93-01
     
Mitsubishi/Eagle   2.0 Ltr. 7-bolt,   21mm Pin
Part # Price/
Set
Bore
MM/Inch
Oversizes Stroke Rod C.H. Head cc's Dome/Dish
Volume
Comp Ratio Pin
Dia.
Notes Buy Now
Inches E504M850 $519* 85.00/3.346 Std. 3.465 5.905 1.378 47 - 10.5:1 .866 1,3,5
Metric E504M855 $519* 85.50/3.366 .020 88 150 35 47 - 10.5:1 22mm 1,3,5
Mitsubishi/Eagle   2.0 Ltr. 7-bolt,    22mm Pin
Part # Price/
Set
Bore
MM/Inch
Oversizes Stroke Rod C.H. Head cc's Dome/Dish
Volume
Comp Ratio Pin
Dia.
Notes Buy Now
Inches E505M850 $519* 85.00/3.346 Std. 3.465 5.905 1.378 47 - 10.5:1 .866 1,3,5
Metric E505M855 $519* 85.50/3.366 .020 88 150 35 47 - 10.5:1 22mm 1,3,5
Notes:
* Non-coated, not supplied with rings (you can order RINGS separately here)
1
Most Wiseco Pistons have an offset pin. Pins must be offset same as OEM for quietest operation.
2 This piston is a flat top w/out valve pockets, to be used if verifying piston to valve and piston to head clearance.
3  Optional pin upgrade available.
4 = This piston made w/stock compression height, which is very close to cylinder head. Use Cometic thick gasket if decking block.
A = Piston Rings need to be adjusted
B or *
= Will build to order (custom), Non-coated, not supplied with rings.
E = With valve pockets unline K557M series.
H = Based on Volvo rod 23mm. Ford OEM 21mm
R = Pin 20mm, OEM = 20.65mm (13/16)

Notes that apply to all Part #'s:
  • Some pistons are listed with a range of compression ratio's. The low number is determined w/an un-cut deck and the high number is determined w/.030 piston to cylinder head clearance.
  • Always check pistons to valve clearance - If using VTEC or like mechanisms- check w/longer duration higher lift lobe.
  • Always run at least .030 piston to head clearance including gasket thickness.
  • If piston appears to be different than expected, please do not hesitate to call Wiseco at 800-321-1364 to verify proper installation specifications.
 
 
 
 
 
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Import Performance Parts - A Division of Flatlander Racing
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