CP Pistons
CP Piston & Ring Set for Mitsubishi 4B11 Evo X - Bore (86.5mm) - Size (+0.5mm) - Compression Ratio ( - SC7221-4
- SKU:
- CPPSC7221-4
- MPN:
- SC7221-4
- Availability:
- Regularly stocked product
Description
Will these pistons fit my 2008 Mitsubishi Lancer Evolution X GSR?
Confirm fitment with your specific vehicle model and year to ensure proper integration of these 86.5mm bore pistons.
How much horsepower can I expect with these new pistons?
Achieving optimal compression ratios for a more responsive throttle directly enhances engine power output for your Evo X.
CP Pistons forged piston sets for the Mitsubishi 4B11 Evo X deliver enhanced engine reliability and power, with a top usage score of 9 for Engine Performance. Featuring an 86.5mm bore and a +0.5mm size, these pistons are engineered for precision fitment and peak engine performance. Trust these premium forged components to maximize output in your Lancer.
What Owners Say
Owners and enthusiasts consistently praise CP Pistons for their reliability across various high-performance builds, with many reporting years of trouble-free use in demanding applications. The pistons have proven capable of supporting serious power levels, with users documenting over 400hp on pump gas with proper tuning. Enthusiasts appreciate the precise piston-to-wall clearances and compatibility with factory bores, though they emphasize that success with any forged piston depends heavily on quality machining and proper engine assembly. Some note that poor builds or tuning—not the pistons themselves—are typically to blame when issues arise. CP Pistons have earned a solid reputation among the Subaru and Mitsubishi communities as a dependable choice for serious engine builds.
Key Features
- CP Piston & Ring Set for Mitsubishi 4B11 Evo X
- Bore (86.5mm)
- Size (+0.5mm)
Why Choose the CPP Piston Sets -4 Cyl
Delivers enhanced engine reliability and power for your Lancer Evo X.
Achieves optimal compression ratios for a more responsive throttle.
Provides a precise fit for seamless integration and peak engine performance.
Transforms your engine's potential with a perfectly matched bore size.
Who Is This For?
Street Performance — 8/10
Forged pistons for enhanced engine response.
Track / Autocross — 8/10
Premium performance pistons for demanding conditions.
Drag Racing — 8/10
Designed for high-performance engine applications.
Racing Competition — 8/10
Premium performance forged pistons for racing.
Engine Performance — 9/10
Achieve optimal compression ratios for responsiveness.
Frequently Asked Questions
What performance benefits do CP Pistons offer for a Mitsubishi Lancer Evo X 4B11 engine?
CP Piston Sets are engineered to deliver enhanced engine reliability and power, achieving optimal compression ratios for a more responsive throttle. These forged pistons contribute to a high "Engine Performance" score of 9, transforming your engine's potential with a perfectly matched bore size for peak output.
Are CP Pistons suitable for track day and autocross use in a 4-cylinder performance engine?
Forged CP Pistons are an excellent upgrade for track and autocross enthusiasts, scoring an 8 for "Track / Autocross" usage. Their premium performance design ensures they are well-suited for demanding conditions, providing the precision and durability required for competitive driving.
What is the recommended installation procedure for CP Piston Sets?
Professional installation is strongly recommended for CP Piston Sets to ensure seamless integration and optimal engine performance. Confirm fitment and installation requirements with a qualified technician for guaranteed precise fitment and maximum engine potential.
Is upgrading to CP Forged Pistons worthwhile for a 4-cylinder performance application?
Upgrading to CP Forged Pistons is highly recommended for performance enthusiasts seeking to maximize engine output. These pistons achieve optimal compression ratios for a more responsive throttle, a key technical reason for their value over stock components for "Engine Performance" applications.
How do the specific bore and size of these CP Pistons affect engine performance?
These CP Piston Sets feature a 86.5mm bore and a +0.5mm size, providing a precise fit for seamless integration and peak engine performance. This perfectly matched bore size is instrumental in achieving optimal compression ratios, directly contributing to the "Engine Performance" score of 9.
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.
Additional Information
CARB: |
This product is not CARB Legal and not for sale in California |
Clearance Item: |
N |
MPN: |
SC7221-4 |
Proposition 65: |
N |
Case Lot Quantity: |
1 |
Category: |
Engine Components>Piston Sets - Forged - 4cyl |
Product Level: |
Premium Performance |
Street Performance: |
8/10 |
Track / Autocross: |
8/10 |
Drag Racing: |
8/10 |
Racing Competition: |
8/10 |
Engine Performance: |
9/10 |
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