Wiseco Pro Tru Pistons; Sport Compact Series; Replacement/Individual Piston; Recommended RingSet: 8100XX; Rings & Pins Included ACURA INTEGRA


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Part #: 6542M81
Notes: Pro Tru Pistons
Sport Compact Series
Replacement/Individual Piston
Recommended RingSet: 8100XX
Rings & Pins Included
MSRP: $146.91
Your Price: $133.72
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Specs

Bore 81mm
Comp Height 29.85
Comp Ratio 8.9:1
Comp Ratio 10.0:1
Comp Ratio 9.5:1
Comp Ratio 9.3:1
Comp Ratio 9.8:1
Dome Volume -2.4 FT
Gram Weight 268
Rod 132.3
Rod 137
Rod 134.3
Rod 138
Stroke 87.2
Stroke 81.4
Stroke 77.4
Stroke 89

This Item Also Available In

Part Number Price Notes & Specs
6593M82 $141.91 Notes Pro Tru Pistons
Sport Compact Series
Replacement/Individual Piston
Recommended RingSet: 8200XX
Rings & Pins Included
Bore 82mm
Comp Height 30
Comp Ratio 11.1:1
Comp Ratio 11.7:1
Comp Ratio 12.3:1
Comp Ratio 12.5:1
Dome Volume 8.3
Gram Weight 281
Rod 134.3
Rod 132.3
Rod 138
Rod 137
Stroke 81.4
Stroke 77.4
Stroke 87.2
Stroke 89
6542M815 $133.72 Notes Pro Tru Pistons
Sport Compact Series
Replacement/Individual Piston
Recommended RingSet: 8150XX
Rings & Pins Included
Bore 81.5mm
Comp Height 29.85
Comp Ratio 9.3:1
Comp Ratio 9.8:1
Comp Ratio 9.5:1
Comp Ratio 8.9:1
Comp Ratio 10.0:1
Dome Volume -2.4 FT
Gram Weight 276
Rod 134.3
Rod 137
Rod 138
Rod 132.3
Stroke 81.4
Stroke 77.4
Stroke 87.2
Stroke 89
6566M82 $141.91 Notes Pro Tru Pistons
Sport Compact Series
Replacement/Individual Piston
Recommended RingSet: 8200XX
Rings & Pins Included
Bore 82mm
Comp Height 30.1
Comp Ratio 10.5:1
Comp Ratio 11.6:1
Comp Ratio 11.8:1
Comp Ratio 11.0:1
Dome Volume 5
Gram Weight 284
Rod 137
Rod 132.3
Rod 138
Rod 134.3
Stroke 77.4
Stroke 87.2
Stroke 81.4
Stroke 89
6593M815 $141.91 Notes Pro Tru Pistons
Sport Compact Series
Replacement/Individual Piston
Recommended RingSet: 8150XX
Rings & Pins Included
Bore 81.5mm
Comp Height 30
Comp Ratio 12.5:1
Comp Ratio 11.1:1
Comp Ratio 12.3:1
Comp Ratio 11.7:1
Dome Volume 8.3
Gram Weight 278
Rod 138
Rod 134.3
Rod 132.3
Rod 137
Stroke 77.4
Stroke 89
Stroke 81.4
Stroke 87.2
K542M8125 $0.00 Notes Pro Tru Pistons
Sport Compact Series
Set of 4 Pistons
Recommended RingSet: 8125XX
Rings & Pins Included
Bore 81.25mm
Comp Height 29.85
Comp Ratio 10.0:1
Comp Ratio 8.9:1
Comp Ratio 9.8:1
Comp Ratio 9.3:1
Comp Ratio 9.5:1
Dome Volume -2.4 FT
Gram Weight TBA
Rod 132.3
Rod 137
Rod 134.3
Rod 138
Stroke 81.4
Stroke 77.4
Stroke 87.2
Stroke 89
K566M82 $503.78 Notes Pro Tru Pistons
Sport Compact Series
Set of 4 Pistons
Recommended RingSet: 8200XX
Rings & Pins Included
Bore 82mm
Comp Height 30.1
Comp Ratio 11.8:1
Comp Ratio 11.6:1
Comp Ratio 11.0:1
Comp Ratio 10.5:1
Dome Volume 5
Gram Weight 284
Rod 134.3
Rod 138
Rod 137
Rod 132.3
Stroke 77.4
Stroke 89
Stroke 81.4
Stroke 87.2
K593M81 $517.37 Notes Pro Tru Pistons
Sport Compact Series
Set of 4 Pistons
Recommended RingSet: 8100XX
Rings & Pins Included
Bore 81mm
Comp Height 30
Comp Ratio 11.1:1
Comp Ratio 12.3:1
Comp Ratio 12.5:1
Comp Ratio 11.7:1
Dome Volume 8.3
Gram Weight 270
Rod 132.3
Rod 137
Rod 134.3
Rod 138
Stroke 87.2
Stroke 77.4
Stroke 89
Stroke 81.4
6566M815 $141.91 Notes Pro Tru Pistons
Sport Compact Series
Replacement/Individual Piston
Recommended RingSet: 8150XX
Rings & Pins Included
Bore 81.5mm
Comp Height 30.1
Comp Ratio 11.8:1
Comp Ratio 10.5:1
Comp Ratio 11.6:1
Comp Ratio 11.0:1
Dome Volume 5
Gram Weight 280
Rod 134.3
Rod 138
Rod 132.3
Rod 137
Stroke 77.4
Stroke 81.4
Stroke 87.2
Stroke 89
K566M815 $528.38 Notes Pro Tru Pistons
Sport Compact Series
Set of 4 Pistons
Recommended RingSet: 8150XX
Rings & Pins Included
Bore 81.5mm
Comp Height 30.1
Comp Ratio 10.5:1
Comp Ratio 11.0:1
Comp Ratio 11.8:1
Comp Ratio 11.6:1
Dome Volume 5
Gram Weight 280
Rod 134.3
Rod 138
Rod 132.3
Rod 137
Stroke 77.4
Stroke 81.4
Stroke 89
Stroke 87.2
6566M81 $141.91 Notes Pro Tru Pistons
Sport Compact Series
Replacement/Individual Piston
Recommended RingSet: 8100XX
Rings & Pins Included
Bore 81mm
Comp Height 30.1
Comp Ratio 11.0:1
Comp Ratio 11.8:1
Comp Ratio 10.5:1
Comp Ratio 11.6:1
Dome Volume 5
Gram Weight 275
Rod 134.3
Rod 137
Rod 132.3
Rod 138
Stroke 81.4
Stroke 89
Stroke 77.4
Stroke 87.2
6593M81 $141.91 Notes Pro Tru Pistons
Sport Compact Series
Replacement/Individual Piston
Recommended RingSet: 8100XX
Rings & Pins Included
Bore 81mm
Comp Height 30
Comp Ratio 11.1:1
Comp Ratio 11.7:1
Comp Ratio 12.3:1
Comp Ratio 12.5:1
Dome Volume 8.3
Gram Weight 270
Rod 134.3
Rod 138
Rod 132.3
Rod 137
Stroke 77.4
Stroke 87.2
Stroke 81.4
Stroke 89
K593M82 $542.65 Notes Pro Tru Pistons
Sport Compact Series
Set of 4 Pistons
Recommended RingSet: 8200XX
Rings & Pins Included
Bore 82mm
Comp Height 30
Comp Ratio 11.1:1
Comp Ratio 11.7:1
Comp Ratio 12.3:1
Comp Ratio 12.5:1
Dome Volume 8.3
Gram Weight 281
Rod 134.3
Rod 132.3
Rod 138
Rod 137
Stroke 81.4
Stroke 77.4
Stroke 87.2
Stroke 89
K566M81 $497.78 Notes Pro Tru Pistons
Sport Compact Series
Set of 4 Pistons
Recommended RingSet: 8100XX
Rings & Pins Included
Bore 81mm
Comp Height 30.1
Comp Ratio 11.6:1
Comp Ratio 11.8:1
Comp Ratio 11.0:1
Comp Ratio 10.5:1
Dome Volume 5
Gram Weight 275
Rod 132.3
Rod 138
Rod 134.3
Rod 137
Stroke 87.2
Stroke 81.4
Stroke 77.4
Stroke 89
6542M82 $122.96 Notes Pro Tru Pistons
Sport Compact Series
Replacement/Individual Piston
Recommended RingSet: 8200XX
Rings & Pins Included
Bore 82mm
Comp Height 29.85
Comp Ratio 10.0:1
Comp Ratio 9.3:1
Comp Ratio 8.9:1
Comp Ratio 9.8:1
Comp Ratio 9.5:1
Dome Volume -2.4 FT
Gram Weight 281
Rod 132.3
Rod 138
Rod 137
Rod 134.3
Stroke 89
Stroke 77.4
Stroke 81.4
Stroke 87.2
K593M815 $542.65 Notes Pro Tru Pistons
Sport Compact Series
Set of 4 Pistons
Recommended RingSet: 8150XX
Rings & Pins Included
Bore 81.5mm
Comp Height 30
Comp Ratio 11.7:1
Comp Ratio 11.1:1
Comp Ratio 12.3:1
Comp Ratio 12.5:1
Dome Volume 8.3
Gram Weight 278
Rod 132.3
Rod 137
Rod 134.3
Rod 138
Stroke 87.2
Stroke 77.4
Stroke 81.4
Stroke 89
K542M82 $452.58 Notes Pro Tru Pistons
Sport Compact Series
Set of 4 Pistons
Recommended RingSet: 8200XX
Rings & Pins Included
Bore 82mm
Comp Height 29.85
Comp Ratio 8.9:1
Comp Ratio 9.5:1
Comp Ratio 9.3:1
Comp Ratio 9.8:1
Comp Ratio 10.0:1
Dome Volume -2.4 FT
Gram Weight 281
Rod 137
Rod 138
Rod 132.3
Rod 134.3
Stroke 77.4
Stroke 89
Stroke 81.4
Stroke 87.2

All Fitments

ACURA
Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes
1990 - 2001 INTEGRA GS
LS
RS
SPECIAL EDITION
ALL ALL ALL B18A1
B18B1
ALL
1990 - 2001 INTEGRA GS
LS
RS
SPECIAL EDITION
ALL ALL ALL B18A1
B18B1
ALL B18A1/B1 With B16A VTEC Head
1992 - 1993 INTEGRA GS-R ALL ALL ALL B17A1 ALL
1994 - 2001 INTEGRA GS-R
TYPE R
ALL ALL ALL B18C1
B18C5
ALL
HONDA
Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes
1999 - 2001 CIVIC SI ALL ALL ALL B16A2 ALL
1994 - 1997 CIVIC DEL SOL VTEC ALL ALL ALL B16A2
B16A3
ALL

Product Description

World renowned for our work building race winning pistons, Wiseco utilizes experience from a diverse background of the most sophisticated sport compact engines.

Wiseco’s Sport Compact Pro Tru line creates the best value in forged pistons today. These American made pistons are forged and machined by skilled Ohio craftsmen with state-of-the-art forging presses and CNC machines. By using dedicated forgings specific to the final piston shape, Pro Tru pistons are stronger and lighter than industry standards.

Pro Tru sets include plasma moly 1/16, 1/16, 3/16 pre-gapped ring packages which provide excellent seal, friction reduction, and long life. Pro Tru pistons also come in a variety of volumes that allow the engine builder to choose the exact compression ratio required for their engine.

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