Manley 614305CE-4 Piston Set 86.50mm Bore Turbo Tuff Extreme Duty (4-Pack)

Part of Manley's Turbo Tuff Extreme Duty lineup, these pistons feature an 86.50 mm bore diameter (a +0.50 mm oversize), a 1.313 in. compression height, a dome head design, and a 2.00 cc piston volume — all engineered to deliver exceptional strength and reliability under the elevated cylinder pressures common in forced-induction builds. With a stock 86.00 mm engine stroke and a 10.00:1 compression ratio, this set targets builders seeking a robust foundation for turbocharged performance applications.

Key Features:

• Domestic 2618 Alloy Forgings — A high-silicon, fatigue-resistant alloy selected for superior strength under extreme heat and pressure
• Chrome Moly Wrist Pins — Premium chrome moly wrist pins included as standard; select SKUs offer upgrades to 9310 or Turbo Tuff/DLC alloys for added durability
• Precision Ring Lands and Grooves — Machined to strict tolerances for enhanced ring seal and maximum power retention
• Cam and Barrel Skirt Profiles — Optimized skirt geometry generates strong power output while minimizing cylinder wall wear
• Single-Operation Fixturing — Manley's proprietary fixturing machines skirt turning and ring groove cutting simultaneously, ensuring ultimate ring groove-to-skirt squareness
• Bore Diameter: 86.50 mm (+0.50 mm oversize)
• Compression Height: 1.313 in.
• Piston Volume: 2.00 cc | Compression Ratio: 10.00:1
• Head Type: Dome | Quantity: 4 pistons
• Piston Weight: 390 gr each

Manley's Turbo Tuff Extreme Duty pistons are a benchmark choice among professional engine builders and performance tuners who demand consistency and durability in high-boost applications. Fits the Mitsubishi 2.0L 4B11T engine with a stock stroke. Verify bore size and compression height against your specific build before ordering.