Wiseco

Wiseco Subaru EJ257 WRX/STI 4v Dish -19cc 99.5 Piston Shelf Stock Kit - K598M995AP

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SKU:
WISK598M995AP
UPC:
00193564076571
MPN:
K598M995AP
Availability:
Regularly stocked product
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$815.99
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Description

Will the Wiseco WIS Piston Sets - 4 Cyl fit my vehicle?
Wiseco WIS Piston Sets - 4 Cyl require confirming fitment with your specific vehicle's engine specifications before purchase.

How difficult is the Wiseco WIS Piston Sets - 4 Cyl installation?
Install Wiseco WIS Piston Sets - 4 Cyl requires advanced mechanical knowledge, with professional installation strongly recommended for optimal performance.

Wiseco Piston Sets - Forged - 4cyl deliver race-winning power and unwavering reliability, excelling in Racing Competition with a perfect 10 score. Engineered with Professional Series forged racing pistons and precision ring grooves, these sets provide custom-level performance and durability. Trust Wiseco for your high-performance 4-cylinder engine build.

What Owners Say

Owners and enthusiasts consistently praise Wiseco pistons for their long-standing reputation and high quality, with many noting they deliver solid performance at a competitive price point. The forged construction and engineering receive particular recognition, with users reporting reliable power gains and durability across various applications from dirt bikes to LS engines. Some enthusiasts point out that while Wiseco pistons remain highly regarded, their cranks have experienced failures and should be avoided—though piston quality appears unaffected. The value proposition stands out, with owners finding them less expensive than premium alternatives while maintaining the performance standards Wiseco has built over decades. For those seeking proven, budget-conscious performance, Wiseco piston sets continue earning trust in the enthusiast community.

Key Features

  • Professional Series forged racing pistons
  • custom-level performance and durability features
  • premium rings
  • Precision ring grooves
  • anti-detonation groove
  • additional ring seal improving features

Why Choose the WIS Piston Sets - 4 Cyl

Delivers race-winning power and unwavering reliability lap after lap.

Achieves custom-tuned engine response for ultimate track control.

Provides superior ring seal for maximum compression and power output.

Transforms engine durability for extreme racing conditions.

Who Is This For?

Racing Competition — 10/10
Forged racing pistons engineered for custom-level performance.

Track / Autocross — 9/10
High performance and durability features for demanding use.

Drag Racing — 9/10
Designed for custom-level performance and durability.

Engine Performance — 10/10
Forged construction and performance features enhance engine output.

Street Performance — 7/10
Custom-level performance and durability features can improve street driving.

Frequently Asked Questions

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

Confirm fitment with your vehicle's specifications to ensure compatibility. Professional Series forged racing pistons require precise application matching for optimal performance. This ensures your engine is perfectly configured for these advanced components.

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

Professional installation is recommended for the Wiseco WIS Piston Sets - 4 Cyl. This advanced component requires meticulous handling and expertise from a qualified technician. Proper installation is crucial for achieving the intended custom-level performance.

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

Expect a significant performance enhancement, especially in 'Racing Competition' use cases with a score of 10. These forged racing pistons deliver custom-level power and durability. This upgrade transforms engine response for ultimate track control.

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

Upgrading from OEM is highly recommended for those seeking maximum engine performance and durability. The forged construction provides superior strength and a premium ring seal, crucial for extreme racing conditions. This transforms engine durability for demanding use.

What is the best use case for the Wiseco WIS Piston Sets - 4 Cyl?

The Wiseco WIS Piston Sets - 4 Cyl are best for 'Racing Competition,' boasting a usage score of 10. These Professional Series forged racing pistons are engineered for custom-level performance and unwavering reliability lap after lap. They deliver race-winning power for dedicated competitors.

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:
K598M995AP
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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