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Wiseco Pistons
Wiseco Pistons - Citroen "International "

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: TU 5 JP 4  (11.2:1 CR)
Saxo  96 + up
   
Citroen 1.6L 16V
Part #   Bore
MM/Inch
Oversizes Stroke Rod C.H. Head cc's Dome/Dish
Volume
Comp Ratio Pin
Dia.
Notes Buy Now
K420M785 $519* 78.5 Std. 82mm 133.4mm 32.35mm - F/T 10.8:1 19.5mm 1, 3
K420M790 $519* 79 20 82mm 133.4mm 32.35mm - F/T 10.8:1 19.5mm 1, 3
K420M795 $519* 79.5 40 82mm 133.4mm 32.35mm - F/T 10.8:1 19.5mm 1, 3
K421M785 $519* 78.5 Std. 82mm 133.4mm 32.35mm - Dome 11.5:1 19.5mm 1, 3
K421M790 $519* 79 20 82mm 133.4mm 32.35mm - Dome 11.5:1 19.5mm 1, 3
Important: Rod Pins may need to be honed .002 over
*
Non-coated, not supplied with rings.
 
The following applications fit the Pistons listed in the red table below:
Engine Code: XU10J4
4 cyl.
   
Peugeot/Citroen 2L 16V  1998cc
Part #   Bore
MM/Inch
Oversizes Stroke Rod C.H. Head cc's Dome/Dish
Volume
Comp Ratio Pin
Dia.
Notes Buy Now
K422M860A $519* 86.00/3.386 Std. 86mm 152mm 1.542mm 37.2 -21cc 8.5:1 23mm 1, 3
K422M865A $519* 86.50/3.4055 20 86mm 152mm 1.542mm 37.2 -21cc 8.5:1 23mm 1, 3
K422M870A $519* 87.00/3.425 40 86mm 152mm 1.542mm 37.2 -21cc 8.5:1 23mm 1, 3
K422M860B $519* 86.00/3.386 Std. 86mm 152mm 1.542mm 37.2 -8cc 10.4:1 23mm 1, 3
K422M865B $519* 86.50/3.4055 20 86mm 152mm 1.542mm 37.2 -8cc 10.4:1 23mm 1, 3
K422M870B $519* 87.00/3.425 20 86mm 152mm 1.542mm 37.2 -8cc 10.4:1 23mm 1, 3
K422M860C $519* 86.00/3.386 Std. 86mm 152mm 1.542mm 37.2 F/T -2cc 12:1 23mm 1, 3
K422M865C $519* 86.50/3.4055 20 86mm 152mm 1.542mm 37.2 F/T -2cc 12:1 23mm 1, 3
K422M870C $519* 87.00/3.425 20 86mm 152mm 1.542mm 37.2 F/T -2cc 12:1 23mm 1, 3
* Non-coated, not supplied with rings.
 
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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