Wiseco

Wiseco 1400 HD Mitsu EVO 8 - 4G63 Turbo -14cc 85.25mm Bore 8.5 CR Piston Shelf Stock Kit - K626M8525AP

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SKU:
WISK626M8525AP
UPC:
00193564077158
MPN:
K626M8525AP
Availability:
Regularly stocked product
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$895.99
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Description

Will the Wiseco WIS Piston Sets - 4 Cyl fit my vehicle?
Wiseco WIS Piston Sets - 4 Cyl require meticulous fitment verification against your specific vehicle's make and model before purchase.

How difficult is the Wiseco WIS Piston Sets - 4 Cyl installation?
Professional installation is strongly recommended for the Wiseco WIS Piston Sets - 4 Cyl to ensure optimal performance and prevent engine damage.

Wiseco WIS Piston Sets - 4 Cyl are engineered for race-only applications, achieving a score of 10 for Racing Competition. Featuring precision ring grooves and an anti-detonation groove, these forged pistons deliver ultimate performance and durability. Trust Wiseco for your highest performance 4-cylinder engine builds.

What Owners Say

Owners and enthusiasts consistently praise Wiseco piston sets for delivering high quality at a competitive price point, with many noting they offer better value than comparable options while maintaining the brand's long-standing reputation for reliability. The performance gains are real but modest—typically a couple of horsepower from higher compression variants—which experienced builders appreciate for their honesty. Some users note that Wiseco's cranks have seen reliability issues and should be avoided, though their pistons remain highly regarded. A few mention that replacement oil rings can be tricky to source and differ from OEM specifications. Overall, Wiseco pistons have earned their place as a trusted choice among engine builders seeking proven performance without premium pricing.

Key Features

  • Precision ring grooves
  • anti-detonation groove
  • additional ring seal improving features
  • ArmorGlide Skirt Coating
  • Fully machined crown
  • Forced pin oiling

Why Choose the WIS Piston Sets - 4 Cyl

Delivers superior ring seal for maximum power and efficiency.

Achieves enhanced combustion control, preventing engine-damaging detonation.

Provides reduced friction and wear for extended engine life.

Transforms engine reliability under extreme racing conditions.

Who Is This For?

Racing Competition — 10/10
Engineered for race-only applications, ultimate performance and durability.

Track / Autocross — 9/10
Race-only design implies high performance for track use.

Drag Racing — 9/10
Race-only design implies high performance for drag racing.

Engine Performance — 10/10
Features like anti-detonation and forced oiling enhance performance.

Street Performance — 7/10
Race-only design may offer performance benefits on street.

Daily Driving Comfort — 1/10
Race-only design is not optimized for daily driving comfort.

Frequently Asked Questions

Will the Wiseco WIS Piston Sets - 4 Cyl fit my vehicle?

Confirming vehicle fitment is a critical first step for optimal performance. Always verify compatibility with your specific 4-cylinder vehicle before installation. This ensures a precise mechanical match for your engine build.

How difficult is the Wiseco WIS Piston Sets - 4 Cyl installation?

Professional installation is strongly recommended for these high-performance forged pistons. Consult a qualified technician to ensure precise fitting and optimal engine health. This ensures the advanced engineering is correctly implemented.

What performance improvement does the WIS Piston Sets - 4 Cyl provide over stock?

These pistons deliver an exceptional boost in engine performance, achieving a score of 10 for 'Racing Competition'. They are engineered for maximum power and efficiency in demanding race environments. Experience unparalleled performance gains in competition.

Is the Wiseco WIS Piston Sets - 4 Cyl worth upgrading from OEM?

Upgrading to these forged pistons is highly recommended for enhanced durability and power. Their fully machined crowns and anti-detonation grooves provide superior combustion control over OEM components. Invest in ultimate race-proven engine reliability.

What is the primary advantage of the ArmorGlide Skirt Coating?

ArmorGlide Skirt Coating significantly reduces friction and wear within the cylinder. This feature contributes to extended engine life and improved efficiency under high stress. Enjoy enhanced mechanical longevity and optimal engine operation.

Additional Resources

Official Wiseco Product Page

Installation Guide (PDF)

Important Notices

⚠️ CARB Notice: This product is NOT legal for street use in California under CARB (California Air Resources Board) regulations. For off-road or race use only.

⚠️ Proposition 65 Warning: This product can expose you to chemicals including lead and/or other substances known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.

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Additional Information

CARB:
This product is not CARB Legal and not for sale in California
Clearance Item:
N
MPN:
K626M8525AP
Proposition 65:
Y
Case Lot Quantity:
1
Category:
Engine Components>Piston Sets - Forged - 4cyl
Universal Fitment:
Y
Product Level:
Race Only
Racing Competition:
10/10
Track / Autocross:
9/10
Drag Racing:
9/10
Engine Performance:
10/10
Street Performance:
7/10
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