Wiseco Pro Tru Forged Pistons; Flat Top; w/ Non-Stock .990 Pin Diameter; Designed to Work w/ Aftermarket 6.700" Rod; Replacement/Individual Piston; Rings Included; Replacement Ring: 4260H CHEVROLET AVALANCHE 2500


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Part #: 5121H1
Notes: Pro Tru Forged Pistons
Flat Top
w/ Non-Stock .990 Pin Diameter
Designed to Work w/ Aftermarket 6.700" Rod
Replacement/Individual Piston
Rings Included
Replacement Ring: 4260H
MSRP: $95.69
Your Price: $91.99

Specs

Bore 4.260"
Comp Height 1.34
Comp Ratio @ 118cc 8.75:1
Dome Volume -2
Gram Weight 498
Rod 6.700"
Stroke 4.370"

This Item Also Available In

Part Number Price Notes & Specs
PT075H6 $694.06 Notes Pro Tru Forged Pistons
Flat Top
w/ Stock 1.040 Pin Diameter
Set of 8 Pistons
Rings Included
Replacement Ring: 4310H
Replacement Piston: 5075H6
Also Fits Marine Apps
Bore 4.310"
Comp Height 2.363
Comp Ratio @ 118cc 8.9:1
Dome Volume -2.5
Gram Weight 505
Rod 7.693
Stroke 4.370"
5075H3 $91.99 Notes Pro Tru Forged Pistons
Flat Top
w/ Stock 1.040 Pin Diameter
Replacement/Individual Piston
Rings Included
Replacement Ring: 4280H
Bore 4.280"
Comp Height 1.363
Comp Ratio @ 118cc 8.8:1
Dome Volume -2.4
Gram Weight 503
Rod 6.693
Stroke 4.370"
5121H3 $91.99 Notes Pro Tru Forged Pistons
Flat Top
w/ Non-Stock .990 Pin Diameter
Designed to Work w/ Aftermarket 6.700" Rod
Replacement/Individual Piston
Rings Included
Replacement Ring: 4280H
Bore 4.280"
Comp Height 2.34
Comp Ratio @ 118cc 8.8:1
Dome Volume -3
Gram Weight 503
Rod 6.700"
Stroke 4.370"
5121H4 $91.99 Notes Pro Tru Forged Pistons
Flat Top
w/ Non-Stock .990 Pin Diameter
Designed to Work w/ Aftermarket 6.700" Rod
Replacement/Individual Piston
Rings Included
Replacement Ring: 4290H
Bore 4.290"
Comp Height 3.34
Comp Ratio @ 118cc 8.85:1
Dome Volume -4
Gram Weight 505
Rod 6.700"
Stroke 4.370"
PT075H3 $694.06 Notes Pro Tru Forged Pistons
Flat Top
w/ Stock 1.040 Pin Diameter
Set of 8 Pistons
Rings Included
Replacement Ring: 4280H
Replacement Piston: 5075H3
Also Fits Marine Apps
Bore 4.280"
Comp Height 1.363
Comp Ratio @ 118cc 8.8:1
Dome Volume -2.4
Gram Weight 503
Rod 6.693
Stroke 4.370"
PT121H1 $638.48 Notes Pro Tru Forged Pistons
Flat Top
w/ Non-Stock .990 Pin Diameter
Designed to Work w/ Aftermarket 6.700" Rod
Set of 8 Pistons
Rings Included
Replacement Ring: 4260H
Replacement Piston: 5121H1
Also Fits Marine Apps
Bore 4.260"
Comp Height 1.34
Comp Ratio @ 118cc 8.75:1
Dome Volume -2
Gram Weight 498
Rod 6.700"
Stroke 4.370"
PT121H3 $638.48 Notes Pro Tru Forged Pistons
Flat Top
w/ Non-Stock .990 Pin Diameter
Designed to Work w/ Aftermarket 6.700" Rod
Set of 8 Pistons
Rings Included
Replacement Ring: 4280H
Replacement Piston: 5121H3
Also Fits Marine Apps
Bore 4.280"
Comp Height 2.34
Comp Ratio @ 118cc 8.8:1
Dome Volume -3
Gram Weight 503
Rod 6.700"
Stroke 4.370"
5075H6 $91.99 Notes Pro Tru Forged Pistons
Flat Top
w/ Stock 1.040 Pin Diameter
Replacement/Individual Piston
Rings Included
Replacement Ring: 4310H
Bore 4.310"
Comp Height 2.363
Comp Ratio @ 118cc 8.9:1
Dome Volume -2.5
Gram Weight 505
Rod 7.693
Stroke 4.370"
PT121H4 $638.48 Notes Pro Tru Forged Pistons
Flat Top
w/ Non-Stock .990 Pin Diameter
Designed to Work w/ Aftermarket 6.700" Rod
Set of 8 Pistons
Rings Included
Replacement Ring: 4290H
Replacement Piston: 5121H4
Also Fits Marine Apps
Bore 4.290"
Comp Height 3.34
Comp Ratio @ 118cc 8.85:1
Dome Volume -4
Gram Weight 505
Rod 6.700"
Stroke 4.370"

All Fitments

CHEVROLET
Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes
2002 - 2006 AVALANCHE 2500 ALL ALL ALL ALL ALL ALL
2001 - 2002 EXPRESS 3500 ALL ALL 8.1 ALL ALL ALL
2001 - 2007 SILVERADO 2500 HD ALL ALL 8.1 ALL ALL ALL
2001 - 2007 SILVERADO 3500 ALL ALL 8.1 ALL ALL ALL
2001 - 2002 SILVERADO 3500 ALL ALL 8.1 ALL ALL ALL
2001 - 2006 SUBURBAN 2500 ALL ALL 8.1 ALL ALL ALL
GMC
Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes
2001 - 2002 SAVANA 3500 ALL ALL 8.1 ALL ALL ALL
2001 - 2007 SIERRA 2500 HD ALL ALL 8.1 ALL ALL ALL
2001 - 2007 SIERRA 3500 ALL ALL 8.1 ALL ALL ALL
2001 - 2002 SIERRA 3500 ALL V8 8.1 ALL ALL ALL
2001 - 2006 YUKON XL 2500 ALL ALL 8.1 ALL ALL ALL

Product Description

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

Wiseco’s 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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