Wiseco

Wiseco Nissan SR20 Turbo -12cc 1.260 X 865 Piston Kit - K556M865AP

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SKU:
WISK556M865AP
UPC:
00193564075314
MPN:
K556M865AP
Availability:
Regularly stocked product
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$784.99
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Description

Do these pistons require specific rings?
These Wiseco Piston Sets - Forged - 4cyl feature precision ring grooves, ensuring optimal compatibility with high-performance ring sets for superior sealing.

What is the best way to install these pistons?
Professional installation is strongly recommended for these high-performance Wiseco Piston Sets - Forged - 4cyl to ensure correct fitment and optimal power delivery.

Wiseco Piston Sets - Forged - 4cyl are engineered for race-only applications, achieving a perfect 10/10 score for racing competition. Featuring precision ring grooves and an anti-detonation groove, these pistons guarantee ultimate power and reliability for your 4-cylinder engine.

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 alternatives while maintaining the reliability Wiseco is known for. The pistons are recognized for solid performance gains, particularly when upgrading compression ratios, though most acknowledge the horsepower increases are modest without additional modifications. Some users note that while the pistons themselves perform well, certain Wiseco components like cranks have seen reported failures, and replacement ring sets can be challenging to source. Despite minor concerns, Wiseco piston sets have built a strong reputation in the performance community for balancing affordability with proven quality.

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 power and reliability.

Engine Performance — 9/10
Fully machined crown, forced pin oiling, precision ring grooves.

Track / Autocross — 9/10
Engineered for race-only applications, ultimate power and reliability.

Drag Racing — 9/10
Engineered for race-only applications, ultimate power and reliability.

Street Performance — 7/10
ArmorGlide skirt coating reduces friction for improved performance.

High Speed Desert Running — 8/10
Engineered for race-only applications, ultimate power and reliability.

Frequently Asked Questions

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

Confirming fitment with your specific vehicle is essential before purchase. Consulting a qualified technician will ensure these pistons are compatible with your 4-cylinder engine application. Accurate fitment guarantees optimal performance and installation.

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

Professional installation is strongly recommended for these high-performance pistons. This ensures the complex internal engine components are handled by skilled hands, guaranteeing precision. Experienced technicians will ensure proper assembly for peak performance.

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

These pistons deliver superior engine performance, scoring a 9 out of 10 for Engine Performance. Their fully machined crown and precision ring grooves enhance combustion and power output. Experience a significant leap in your engine's capabilities with these race-engineered components.

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

Upgrading to these forged pistons is highly recommended for race-only applications, offering ultimate power and reliability. Their advanced design provides enhanced combustion control and reduced friction, justifying the investment for competition. Achieve a level of performance unattainable with stock components.

What are the key features of the Wiseco WIS Piston Sets - 4 Cyl?

These pistons feature precision ring grooves and anti-detonation grooves for enhanced combustion control. Additional ring seal features and a fully machined crown contribute to maximum power and efficiency. The ArmorGlide skirt coating further reduces friction for extended engine life.

Additional Resources

Official Wiseco Product Page

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:
K556M865AP
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
Engine Performance:
9/10
Track / Autocross:
9/10
Drag Racing:
9/10
Street Performance:
7/10
High Speed Desert Running:
8/10
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