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Pistons
Wiseco Pistons
Molnar Technologies Rods & Cranks
SUPER Lite Rods!
CLICK HERE!
Wiseco Pistons - Chevy Cavalier/Pontiac/JNW
Includes: moly coated skirts, rings, wrist pins & circlips.
* = Custom, Non-coated, not supplied w/rings (may purchase separately)

Wiseco Pistons 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.
 
Stocking Shelf Pistons come complete with:
  1. Aerospace grade materials, forged for maximum strength.
  2. Precision tolerance CNC machining for quality, repeatability and performance.
  3. Crown thickness and ring lands designed for power adders such as forced induction (turbos & blowers) and
    nitrous oxide. Note: High compression pistons are generally de signed for naturally aspired application.
  4. High Quality Piston Rings featuring positive twist nitride steel top ring, Napier 2nd ring, and nitrided rails on a
    specially designed expander for the best oil control.
  5. Wrist Pins constructed of chrome moly steel material for the ultimate in strength.
  6. Honed/Reamed pin bore holes for a precise tolerance fi t between wrist pin and piston.
  7. Wire Retainer Clip Lock, featuring chrome silicon material for the ultimate yield strength.
  8. Piston deburred for performance and reliability.
  9. Piston weights listed may vary.
  10. All specs based on U.S. engine codes unless noted.
Piston Rings Price/Set Buy
Now
WITH purchase of CUSTOM Wiseco Pistons
4 Cyl $89
6 Cyl $129
Purchased alone:
4 Cyl $109
6 Cyl $149
2002 Ecotec 2.2L (& Cobalt 2002-'06)  - Multiple Models
Part # Buy Now Bore
MM/Inch
Oversizes Stroke Rod C.H. Head cc's Dome/Dish
Volume
Comp Ratio Pin
Dia.
Notes
Inches K582M86
$526
86.00/3.386 std. 3.724 5.765 1.053 - FT OCC 10:1 .787 1
Metric K582M865
$526
86.50/3.405 .020 94.6 5.765 26.8 - FT OCC 10:1 20mm 1

Inches K583M86
$526
86.00/3.386 Std. 3.724 5.765 1.053 - -8cc 8.9:1 .787 1
Metric K583M865
$526
86.50/3.405 .020 94.6 5.765 26.8 - -8cc 8.9:1 20mm 1

Inches K583M86B
$499*
86.00/3.386 std. 3.724 5.765 1.053 - dome 11 .787 1,3
Metric K583M865B
$499*
86.50/3.405 .020 94.6 5.765 26.8 - dome 11 20mm 1,3

Inches K583M86C
$499*
86.00/3.386 std. 3.724 5.765 1.053 - dome 13.8:1 .787 1,3
Metric K583M865C
$499*
86.50/3.405 .020 94.6 5.765 26.8 - dome 13.8:1 20mm 1,3
* no coating, rings not included
Multiple Models 1996-02 (LD9 2.4 Ltr. non quad 4)
Part # Buy Now Bore
MM/Inch
Oversizes Stroke Rod C.H. Head cc's Dome/Dish
Volume
Comp Ratio Pin
Dia.
Notes
Inches K584M900
$526
90.00/3.543 Std. 3.701 5.709 1.181 61.5 -7.5 9:1 .866 1
Metric K584M905
$526
90.50/3.563 .020 94 145 30 61.5 -7.5 9:1 22mm 1

Inches K584M900B
$499*
90.00/3.543 Std. 3.701 5.709 1.181 61.5 F/T 10:1 .866 1,3
Metric K584M905B
$499*
90.50/3.563 .020 94 145 30 61.5 F/T 10:1 22mm 1,3
* no coating, rings not included
93-02 Cavalier, Sunfire, 2.4 LN9 (non-Ecotec),  90mm std. bore
Part # Buy Now Bore
MM/Inch
Oversizes Stroke Rod C.H. Head cc's Dome/Dish
Volume
Comp Ratio Pin
Dia.
Notes
Inches K022M900
$479*
90.00/3.543 Std. 3.701 5.709 1.181 61.5 -7.5 8.5 .866 1,3
Metric K022M905
$479*
90.50/3.563 .020 94 145 30 61.5 -7.5 8.5 22mm 1,3
  K023M900
$479*
90.00/3.543 same info as above 10.5 .866 1,3
  K023M905
$479*
90.50/3.563 10.5 22mm 1,3
* no coating, rings not included
93-00 Cavalier, Sunfire, 2.2 LN2 (non-Ecotec), 89mm, 3.385 std. bore
** pistons available in 90.5 bore for street use only
NOTE - pistons are available for different strokes and rod lengths
ALSO - 5.680 Long Rods available CLICK HERE
Molnar Technologies Rods & Cranks Molnar SUPER Lite Rods also available - CLICK HERE!
Part # Buy Now Bore
MM
Oversizes Stroke Rod C.H. Head cc's Vol/ Comp Ratio Weight
(grams)
Pin
Dia.
Notes
Super Lightweight
Inches K021M890LW
$499*
89.0 std. - 5.590 1.210 - F/T 10.8-11 ('90-97)
9.5:1 ('98-99)
299 .800 1,3
Metric K021M895LW
$499*
89.5 .020 - 5.590 1.210 - F/T 10.8-11 ('90-97)
9.5:1 ('98-99)
299 .800 1,3
  K021M900LW
$499*
90.0 .040 - 5.590 1.210 - F/T 10.8-11 ('90-97)
9.5:1 ('98-99)
299 .800 1,3
  K021M905LW
$499*
90.5**
 
.060 - 5.590 1.210 - F/T 10.8-11 ('90-97)
9.5:1 ('98-99)
299 .800 1,3
Super Fly Lightweight
Inches K021M890LLW
$529*
89.0 std. - 5.590 1.210 - F/T 10.8-11 ('90-97)
9.5:1 ('98-99)
286 .800 1,3
Metric K021M895LLW
$529*
89.5 .020 - 5.590 1.210 - F/T 10.8-11 ('90-97)
9.5:1 ('98-99)
286 .800 1,3
  K021M900LLW
$529*
90.0 .040 - 5.590 1.210 - F/T 10.8-11 ('90-97)
9.5:1 ('98-99)
286 .800 1,3
  K021M905LLW
$529*
90.5**
 
.060 - 5.590 1.210 - F/T 10.8-11 ('90-97)
9.5:1 ('98-99)
286 .800 1,3
STD Weight
Inches K020M890
$479*
89.0 std. - 5.590 1.210 - -23 8-5:1 339 .800 1,3
Metric K020M895
$479*
89.5 .020 - 5.590 1.210 - -23 8-5:1 339 .800 1,3
  K020M900
$479*
90.0 .040 - 5.590 1.210 - -23 8-5:1 339 .800 1,3

Inches K021M890
$479*
89.0 std. - 5.590 1.210 - F/T 10.8-11 ('90-97)
9.5:1 ('98-99)
339 .800 1,3
Metric K021M895
$479*
89.5 .020 - 5.590 1.210 - F/T 10.8-11 ('90-97)
9.5:1 ('98-99)
339 .800 1,3
  K021M900
$479*
90.0 .040 - 5.590 1.210 - F/T 10.8-11 ('90-97)
9.5:1 ('98-99)
339 .800 1,3
  K021M905
$529*
90.5**
 
.060 - 5.590 1.210 - F/T 10.8-11 ('90-97)
9.5:1 ('98-99)
339 .800 1,3
* no coating, rings not included
1998-2003 Cavalier 2.2L
Part # Buy Now Bore
MM/Inch
Oversizes Stroke Rod C.H. Head cc's Dome/Dish
Volume
Comp Ratio Pin
Dia.
Notes
Inches K025M890
$519*
89.0 std. - 5.590 1.203 - DOME 10.5-15:1 ('90-97)
10.7-14:1 ('98-99)
.787 1,3
Metric K025M895
$519*
89.5 .020 - 5.590 1.203 - DOME 10.5-15:1 ('90-97)
10.7-14:1 ('98-99)
20mm 1,3
  K025M990
$519*
90.0 .040 - 5.590 1.203 - DOME 10.5-15:1 ('90-97)
10.7-14:1 ('98-99)
20mm 1,3
* no coating, rings not included
 
Ecotec 2.4L (Solstice, Saturn Sky, Cobalt) 2007-09
Part # Buy Now Bore
MM/Inch
Oversizes Stroke Rod C.H. Head cc's Dome/Dish
Volume
Comp Ratio Pin
Dia.
Notes
Inches K024M880A
$479*
88.0 std 3.858
(98mm)
5.659
(143.75 mm)
1.092 - 16.0cc
(dish)
8.5-1 .787
(20mm)
3
Metric K024M885A
$479*
88.5 .020 3.858
(98mm)
5.659
(143.75 mm)
1.092 - 16.0cc
(dish)
8.5-1 .787
(20mm)
3

Inches K024M880B
$479*
88.0 std 3.858
(98mm)
5.659
(143.75 mm)
1.092 - (F/T) 10-1 .787
(20mm)
3
Metric K024M885B
$479*
88.5 .020 3.858
(98mm)
5.659
(143.75 mm)
1.092 - (F/T) 10--1 .787
(20mm)
3
* no coating, rings not included
 
GM LE5 2.4L Eco Tec
20062007 Chevrolet Cobalt SS
2008           Chevrolet Cobalt Sport
20062008 Chevrolet HHR
20062008 Pontiac G5/Pursuit
20062009 Pontiac G6
20062009 Pontiac Solstice
20062009 Saturn Sky
20062007 Saturn Ion
20082009 Saturn Aura
20082012 Chevrolet Malibu
20082009 Saturn Vue
Series # Bore
MM/Inch
Oversizes Stroke Rod C.H. Head cc's Dome/Dish
Volume
Comp Ratio Pin
Dia.
Notes Price/
Set
Buy
Now
Comp Ratio 8.5:1
K026M880A88mmStd3.900 5.6601.09160ccDISH8.5:1 .787/20mm3 $499*
K026M885A88.5mm.0203.900 5.6601.09160ccDISH8.5:1 .787/20mm3 $499*
K026M890A90mm.0403.900 5.6601.09160ccDISH8.5:1 .787/20mm3 $499*
Comp Ratio 9.5:1
K026M880B88mmStd3.900 5.6601.09160ccDISH9.5:1 .787/20mm3 $499*
K026M885B88.5mm.0203.900 5.6601.09160ccDISH9.5:1 .787/20mm3 $499*
K026M890B90mm.0403.900 5.6601.09160ccDISH9.5:1 .787/20mm3 $499*
STOCK Comp Ratio 10.4:1
K026M880C88mmStd3.900 5.6601.09160ccFlat Top10.5:1 .787/20mm3 $499*
K026M885C88.5mm.0203.900 5.6601.09160ccFlat Top10.5:1 .787/20mm3 $499*
K026M890C90mm.0403.900 5.6601.09160ccFlat Top10.5:1 .787/20mm3 $499*
* no coating, rings not included (can be purchased separately)
 
Notes:
Pistons listed with a compression ratio range: low number is with un-cut deck, high number is block decked to .030" piston to cylinder head clearance.
Always check piston 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 compatibility.
1 = Most Wiseco Pistons have a offset pins. Pins must be offset same as OEM for quitest operation
3 or * = Will build to order (custom), Non-coated, not supplied with rings.
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 = Will build to order (custom), Non-coated, not supplied with rings.
H =
Based on Volvo rod 23mm. Ford OEM 21mm
R = Pin 20mm, OEM = 20.65mm (13/16)
 
 
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