Wiseco
Wiseco Subaru EJ257 WRX/STI 4v Dish -19cc 99.75 Piston Shelf Stock Kit - K598M9975
- SKU:
- WISK598M9975
- UPC:
- 193564447944
- MPN:
- K598M9975
- Availability:
- Regularly stocked product
Description
What is the proper installation procedure for these pistons?
Professional installation is strongly recommended for these forged pistons to ensure optimal performance and engine longevity.
Are these pistons suitable for street use?
Forged 2618 aluminum and enhanced sealing features provide excellent street performance and durability under demanding conditions.
WIS Piston Sets - Forged - 4cyl are engineered for race-only applications, achieving a perfect 10 score for Racing Competition. Constructed from 2618 aluminum with precision ring grooves and anti-detonation features, these pistons deliver extreme strength and reliability. Expect ultimate performance and unwavering confidence in your engine's extreme capabilities.
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 premium alternatives while maintaining the durability Wiseco is known for. The pistons themselves earn strong marks for performance and reliability across various applications, from LS builds to dirt bikes. Some users caution that while the pistons are excellent, Wiseco cranks have seen reported failures and should be avoided. A few builders mention that replacement ring sets can be challenging to source directly from Wiseco. Despite minor concerns, Wiseco piston sets have built a solid reputation as a trusted, budget-conscious choice for serious engine builds.
Key Features
- 2618 aluminum
- Precision ring grooves
- anti-detonation groove
- additional ring seal improving features
- ArmorGlide Skirt Coating
- Fully machined crown features Forced pin oiling
Why Choose the WIS Piston Sets - 4 Cyl
Delivers extreme strength and durability for relentless track abuse.
Achieves optimal ring seal for maximum power and efficiency.
Provides superior piston skirt protection, reducing friction and wear.
Transforms engine reliability with advanced detonation resistance features.
Who Is This For?
Racing Competition — 10/10
Engineered for race-only applications, extreme conditions.
Track / Autocross — 9/10
Designed for extreme conditions, ultimate performance.
Drag Racing — 9/10
Engineered for race-only applications, extreme conditions.
Street Performance — 7/10
Forged 2618 aluminum, performance features.
Engine Performance — 10/10
Ultimate performance and reliability under extreme conditions.
High Speed Desert Running — 8/10
Engineered for extreme conditions, reliability.
Frequently Asked Questions
Will the Wiseco WIS Piston Sets - 4 Cyl fit my vehicle?
Confirming fitment with your specific vehicle is essential for proper integration and performance. Always consult with a qualified technician to ensure compatibility before installation. This ensures the precise engineering meets your vehicle's requirements.
How difficult is the Wiseco WIS Piston Sets - 4 Cyl installation?
Professional installation is strongly recommended for these performance piston sets. This ensures the advanced components are fitted correctly, maximizing their extreme performance capabilities. Trusting expert hands guarantees optimal results for your engine.
What performance improvement does the WIS Piston Sets - 4 Cyl provide over stock?
These pistons deliver ultimate performance for demanding motorsport environments, scoring a 10/10 for Engine Performance. Their race-engineered design unlocks significant power and reliability gains. Experience a dramatic enhancement in your engine's capabilities.
Is the Wiseco WIS Piston Sets - 4 Cyl worth upgrading from OEM?
Upgrading to forged 2618 aluminum pistons offers extreme strength and durability for relentless track abuse, making it a worthwhile investment for performance. The advanced anti-detonation groove features transform engine reliability under extreme conditions. Gain a substantial advantage in motorsport.
What materials are used in the Wiseco WIS Piston Sets - 4 Cyl for durability?
Constructed from 2618 aluminum, these pistons provide extreme strength and durability, essential for relentless track abuse and high-speed desert running (scoring 8/10). The ArmorGlide Skirt Coating further enhances their longevity by reducing friction and wear. Expect unparalleled resilience.
Vehicle Compatibility
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2004–2012 | Subaru | Impreza | WRX STI |
| 2007–2012 | Subaru | Impreza | WRX STI Limited |
| 2010 | Subaru | Impreza | WRX STI Special Edition |
Additional Resources
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.
Warranty Information
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2004-2012 | Subaru | Impreza | WRX STI |
| 2007,2011-2012 | Subaru | Impreza | WRX STI Limited |
| 2010 | Subaru | Impreza | WRX STI Special Edition |
Additional Information
CARB: |
This product is not CARB Legal and not for sale in California |
Clearance Item: |
N |
MPN: |
K598M9975 |
Proposition 65: |
Y |
Case Lot Quantity: |
1 |
Category: |
Engine Components>Piston Sets - Forged - 4cyl |
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