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Wiseco Pistons K612M83 Pistons

(1990-1992 Volkswagen Jetta GLI 16-Valve/GTX 16-V; 1990-1992 Volkswagen Golf GTI 16-Valve)

Manufacturer

Picture for manufacturer Wiseco Pistons

Part Number

K612M83
6 reviews
Sale Price

$775.99

Estimated ship date Thursday, November 19

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Product Details

The Wiseco K612M83 is a Sport Compact Pro Tru forged piston set designed for high-performance 4-cylinder engines with an 83mm (3.268") bore and a 9.0:1 compression ratio. Manufactured from 4032 aluminum alloy and forged in the USA by skilled Ohio craftsmen, these pistons deliver the strength, precision, and reliability that Wiseco is renowned for across motorsport and performance engine building.

Pro Tru pistons use dedicated forgings specific to the final piston shape, resulting in a component that is both stronger and lighter than industry-standard alternatives. The ArmorGlide skirt coating — a solid-film lubricant developed by Wiseco — minimizes friction and improves wear resistance for long service life in demanding applications.

Key Features:

  • Bore: 83mm (3.268")
  • Compression Ratio: 9.0:1
  • Stroke: 92.8mm (3.654")
  • Rod Length: 144.00mm (5.669")
  • Compression Height: 29.77mm (1.172")
  • Dome Volume: -11cc (dish)
  • Deck Clearance: +0.18mm (piston protrudes above deck — requires 1.00mm head gasket)
  • Wrist Pin Diameter: 20mm
  • Piston Weight: 283 grams each
  • Ring Grooves: Plasma moly 1/16", 1/16", 3/16" pre-gapped ring package
  • Recommended Ring Set: 8300XX
  • Material: 4032 forged aluminum alloy
  • ArmorGlide solid-film skirt coating for reduced friction
  • Forged and CNC-machined in the USA

Each set includes 4 forged pistons, piston rings, and wrist pins. The pre-gapped plasma moly ring package delivers excellent combustion seal, reduced friction, and extended ring life. This piston set is an ideal choice for performance street builds, turbocharged, supercharged, or naturally aspirated sport compact engine applications requiring proven forged strength.

Products specifications

Fits

1990-1992 Volkswagen Jetta GLI 16-Valve/GTX 16-V; 1990-1992 Volkswagen Golf GTI 16-Valve

Bore

83mm

Bore (in)

3.268 in.

Bore (mm)

83.000mm

Comp Height

29.77

Comp Ratio

9.0:1

Compression Distance (in)

1.172 in.

Dome Volume

-11

File Fit

No

Gapless

No

Gram Weight

283

Oil Ring Material

Stainless steel

Oil Ring Tension

Standard

Oil Ring Thickness

2.8mm

Pin Diameter (in)

0.787 in.

Piston Head Volume (cc)

+11.00cc

Piston Material

Forged aluminum

Piston Style

Dish, with two valve reliefs

Quantity

Sold as a kit.

Rod

144

Second Ring Facing Material

Phosphate coated

Second Ring Material

Cast iron

Second Ring Thickness

1.2mm

Stroke

92.8

Top Ring Facing Material

Gas nitrided

Top Ring Material

Steel

Top Ring Thickness

1.0mm

Wrist Pin Style

Press-fit or floating

It was fast and smooth. Thank you Susan

Easy to navigate website and reasonable prices

prices are good. just wish you guys offered free shipping.

Cheaper price and low shipping

Shipment was quicker than I thought and the product was just as described. It was cheaper than else where. Thank you Autoplicity

Quick turn around on my order. Best price around and reasonable shipping and handling. Done deal.

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