Wossner Honda S2000 F20C Turbo Low Compression Forged Piston Kit
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- SKU K9209D050
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Honda S2000 F20C Turbo Low Compression Forged Piston Kit
Engineered for extreme forced induction, the Wossner Turbo Low Compression Forged Piston Kit is the ultimate choice for high-boost Honda S2000 F20C builds. By reducing the compression ratio to a boost-friendly 9.0:1 (bore dependent), these pistons provide the essential safety margin required to prevent detonation under heavy load. This allows tuners to push significantly higher PSI through the 2.0L VTEC engine, transforming the F20C into a reliable turbocharged powerhouse capable of exceeding 500+ bhp when supported by the right hardware.
Each piston is precision-forged from 4032-T6 high-silicon aluminium alloy, chosen for its incredible strength and low thermal expansion. This specific alloy allows for tighter piston-to-bore clearances, which eliminates the common "forged piston slap" during cold starts and ensures superior oil control and ring seal. The kit features Moly-coated skirts to minimise internal friction and mirror-polished crowns to reflect heat and prevent carbon adhesion. Note that because the F20C uses FRM (Fibre Reinforced Metal) cylinder liners, professional engine builders recommend sleeving the block or using specific bore preparation to ensure maximum longevity with forged internals.
Key Performance Features
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Turbo-Optimised Compression: Lowered 9.0:1 CR (Standard bore) allows for safe, high-boost tuning on pump or race fuel.
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4032-T6 Forging: Premium high-silicon alloy offers maximum structural integrity and high-RPM durability.
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Reduced Internal Friction: Moly-coated skirts provide a dry-film lubricant layer, protecting cylinder walls and reducing drag.
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Detonation Resistance: Mirror-polished crowns eliminate hot spots and promote a stable flame front under boost.
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Lightweight Precision: CNC-machined to approximately 298g per piston, reducing reciprocating mass for improved throttle response.
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Professional Grade Kit: Complete with 4x forged pistons, high-performance ring sets, 23mm heavy-duty gudgeon pins, and clips.
Technical Specifications
| Feature | Specification |
| Engine Code | Honda F20C / F20C1 (S2000) |
| Bore Sizes Available | 87.50mm / 89.00mm / 90.00mm |
| Compression Ratio | 8.5:1 — 9.0:1 (Turbo Spec) |
| Stroke | 84.00mm |
| Compression Height | 30.00mm |
| Piston Weight | Approx. 298g |
| Gudgeon Pin Diameter | 23mm (WP024-SP) |
| Piston Material | 4032-T6 Forged Aluminium |
| Connecting Rod Length | 153mm |
Why Choose Wossner?
Wossner is globally recognised as the innovative specialist for high-performance forged pistons and connecting rods. With decades of experience at the highest levels of European motorsport, Wossner products are engineered to withstand the extreme duress of competition while maintaining the refinement required for everyday use. Every kit is manufactured in-house at their state-of-the-art German facility, utilising advanced CNC machining to guarantee micro-level precision. When you choose Wossner, you are investing in German engineering excellence that delivers uncompromised longevity, superior power, and the reliability needed to push your F20C engine to its absolute limit.