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Wiseco Pistons
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Wiseco Pistons - Saturn
Includes: moly coated skirts, rings, wrist pins & circlips.
(* = Custom, Non-coated, NOT supplied with rings. Order RINGS separately HERE)
 
Wiseco Sport Compact Pistons are made from dedicated forgings produced in-house to give you a light weight piston with superior strength and optimal design. Being the multivalve piston technology leader, the line features specially designed valve pockets, complex dome and crown shapes, the steel nitride/napier xx rings and optimized skirt profiles. The pistons come standard with our ArmorGlide® coating material for reduced friction and noise, freeing up horsepower.
 
Stocking Shelf Pistons Come Complete With:
  • Aerospace grade materials, forged for maximum strength.
  • Precision tolerance CNC machining for quality, repeatability and performance.
  • Crown thickness and ring lands designed for power adders such as forced induction (turbos & blowers) and nitrous oxide. (Note: High comp. pistons are generally designed for nat. aspirated engines)
  • 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.
  • Wrist Pins constructed of chrome moly steel material for the ultimate in strength.
  • Honed/Reamed pin bore holes for a precise tolerance fi t between wrist pin and piston.
  • Wire Retainer Clip Lock, featuring chrome silicon material for the ultimate yield strength.
  • Piston deburred for performance and reliability.

 
Matching Parts for this Engine:
Gude Performance Cams Gude Performance Cams
Saturn 1.9L 4 cyl. 91-98 SOHC/DOHC
Piston # Price/
Set
Bore
MM/Inch
Oversizes Stroke Rod C.H. Head cc's Dome/Dish
Volume
Comp Ratio Pin
Dia.
Notes Buy Now
K050M820A $519* 82 std. 90mm 5.708 1.181 - Dish 8.5-8.8 .769 3
K050M825A $519* 82.5 20 90mm 5.708 1.181 - Dish 8.5-8.8 .769 3
K050M830A $519* 83 40 90mm 5.708 1.181 - Dish 8.5-8.8 .769 3

K050M820B $519* 82 std. 90mm 5.708 1.181 - F/T 10.2:1 .769 3
K050M825B $519* 82.5 20 90mm 5.708 1.181 - F/T 10.2:1 .769 3
K050M830B $519* 83 40 90mm 5.708 1.181 - F/T 10.2:1 .769 3
* no coating, rings not included
 
Matching Parts for this Engine:
Gude Performance Cams Gude Performance Cams
Saturn 1.9L 4 cyl. 99+up DOHC
** REQUIRED Info When Ordering: 
For year 1999 we need the compression height of your pistons as early & late are different.
Piston # Price/
Set
Bore
MM/Inch
Oversizes Stroke Rod C.H. Head cc's Dome/Dish
Volume
Comp Ratio Pin
Dia.
Notes Buy Now
K051M820A $519* 82 std. 90mm 5.846 1.046 - Dish 8.5-8.8 .769 3
K051M825A $519* 82.5 20 90mm 5.846 1.046 - Dish 8.5-8.8 .769 3
K051M830A $519* 83 40 90mm 5.846 1.046 - Dish 8.5-8.8 .769 3

K051M820B $519* 82 std. 90mm 5.846 1.046 - F/T 10.2:1 .769 3
K051M825B $519* 82.5 20 90mm 5.846 1.046 - F/T 10.2:1 .769 3
K051M830B $519* 83 40 90mm 5.846 1.046 - F/T 10.2:1 .769 3
* no coating, rings not included
 
Matching Parts for this Engine:
Gude Performance Cams Gude Performance Cams
Ecotec 2.4L (Solstice, Saturn Sky, Cobalt) 2007-09
Piston # Price/
Set
Bore
MM/Inch
Oversizes Stroke Rod C.H. Head cc's Dome/Dish
Volume
Comp Ratio Pin
Dia.
Notes  
K024M880A $519* 88.0 std 3.858
(98mm)
5.659
(143.75 mm)
1.092 - 16.0cc
(dish)
8.5-1 .787
(20mm)
3
K024M885A $519* 88.5 .020 3.858
(98mm)
5.659
(143.75 mm)
1.092 - 16.0cc
(dish)
8.5-1 .787
(20mm)
3

K024M880B $519* 88.0 std 3.858
(98mm)
5.659
(143.75 mm)
1.092 - (F/T) 10-1 .787
(20mm)
3
K024M885B $519* 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
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, B or * = 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 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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