Description
What is the recommended bore size for the JE Pistons 4B11T set?
This JE Piston Set for the Mitsubishi 4B11T features an 89.0mm bore, precisely engineered for optimal combustion chamber volume.
Can I install these pistons myself?
Professional installation is strongly recommended for these high-performance forged pistons to ensure proper engine function and durability.
JE Piston Sets for the 4cyl Mitsubishi 4B11T deliver optimal combustion chamber volume for enhanced power and efficiency with an 89.0mm bore. Engineered from advanced 2618 aluminum alloy, these pistons provide superior strength and durability for demanding applications. Experience maximized engine performance with confidence in these premium forged pistons.
What Owners Say
Owners and enthusiasts consistently choose JE pistons as their go-to replacement for factory Subaru pistons, which are widely criticized for cracking ringlands under boost and aggressive tuning. Engine builders report running JE pistons exclusively, with users successfully pushing setups to 24psi on built hybrids without issues when properly tuned. The pistons are praised for their reliability at higher power levels and proven durability in demanding applications. Some note they run slightly louder than OEM due to piston design and clearances, though this is accepted as typical for forged construction. JE pistons have earned a strong reputation in the Subaru community as the reliable solution for anyone moving beyond stock power levels.
Key Features
- Set of 4 Mitsubishi 4B11T
- 89.0mm Bore
- -10.9 Dome Asymmetrical FSR Pistons
- Set of 4
- Piston Set
- 2618
Why Choose the JE Piston Sets -4 Cyl
Delivers a complete set of four high-performance pistons engineered for your Mitsubishi 4B11T engine.
Achieves optimal combustion chamber volume for enhanced power and efficiency with a precise 89.0mm bore.
Provides superior strength and durability for extreme performance applications with advanced 2618 aluminum alloy.
Transforms your engine's potential with a specially designed -10.9 dome for aggressive tuning and increased compression.
Who Is This For?
Street Performance — 9/10
Optimizes combustion for enhanced power and efficiency.
Engine Performance — 9/10
Precise bore and dome design enhance power output.
Track / Autocross — 8/10
Designed for enhanced power and efficiency under load.
Racing Competition — 8/10
Premium performance pistons for competitive racing.
Fuel Efficiency — 7/10
Optimized combustion chamber volume aids efficiency.
Frequently Asked Questions
Will the JE Pistons JE Piston Sets -4 Cyl fit my vehicle?
Confirm fitment directly with your vehicle's specific make, model, and year before purchase. This JE Piston Set is engineered for a precise 89.0mm bore, ensuring optimal compatibility when matched correctly. Proper fitment is crucial for achieving intended performance gains.
How difficult is the JE Pistons JE Piston Sets -4 Cyl installation?
Professional installation is recommended for this JE Piston Set, confirmed by a qualified technician. This ensures the complex machining and precise fitment required for optimal engine function are met. Expert installation guarantees the best performance outcome for your 4B11T engine.
What performance improvement does the JE Piston Sets -4 Cyl provide over stock?
Significant performance gains are achieved through enhanced combustion, scoring a 9 for Engine Performance. The precise 89.0mm bore and asymmetrical dome design optimize combustion chamber volume for increased power and efficiency. This upgrade transforms your engine's potential for demanding applications.
Is the JE Pistons JE Piston Sets -4 Cyl worth upgrading from OEM?
Upgrading to JE Pistons JE Piston Sets -4 Cyl is highly recommended for performance enthusiasts. The advanced 2618 aluminum alloy provides superior strength and durability over OEM components. This translates to a more robust and capable engine for extreme performance scenarios.
What material are the JE Pistons JE Piston Sets -4 Cyl made from?
These JE Piston Sets are crafted from an advanced 2618 aluminum alloy, providing superior strength and durability. This premium material is engineered to withstand the extreme stresses of high-performance applications. Expect enhanced engine longevity and consistent power output.
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.
Related Products
Related Products
JE Piston Sets -4 Cyl
JE Pistons
JE Piston Sets -4 Cyl
JE Pistons
JE Piston Sets -4 Cyl
JE Pistons
JE Piston Sets -4 Cyl
JE Pistons
JE Piston Sets -4 Cyl
JE Pistons
JE Piston Sets -4 Cyl
JE Pistons