Wiseco Piston Kit VW EA113 82.50mm -10.5cc 9.25:1 Pin 20mm
Wiseco K745M825 – forged piston kit for VW/Audi 2.0 TSI EA113 (ENG)
Key advantages
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Forged 4032 aluminum – lower thermal expansion than 2618, allowing tighter clearances and quieter operation in daily use.
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Inverted dish −11.25 cc → compression ratio ≈ 9.25 : 1 with the stock 92.8 mm stroke; plenty of safety margin for large turbo setups and E85 fuel.
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ArmorGlide® skirt coating reduces friction and helps prevent cold-start scuffing.
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FSR asymmetric skirts: a narrower thrust side cuts weight, while the wider major thrust side stabilizes the piston at high RPM.
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Lateral gas ports keep the top ring sealed under high boost.
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20 mm thick-wall wrist pins included – strength reserve for 600 + hp builds.
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Supplied with a dedicated Wiseco ring pack, ready for installation.
Typical applications
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Stage 3 + EA113 TFSI with large single or hybrid turbo.
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Drag, drift and time-attack engines exceeding 600 hp.
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E85 / methanol conversions that need lower compression and greater knock resistance.
Technical specifications
| Parameter | Value |
|---|---|
| Cylinder bore | 82.50 mm (STD) |
| Dish volume | −11.25 cc (inverted) |
| Compression ratio* | 9.25 : 1 |
| Compression height (CH) | 29.60 mm |
| Material | Forged 4032-T6 aluminum |
| Piston weight (no pin) | ~ 310 g |
| Wrist pin | Ø 20 mm × 58 mm, thick wall |
| Ring grooves | 1.0 / 1.2 / 2.8 mm |
| Quantity | 4 pistons |
* With stock 92.8 mm stroke and EA113 cylinder head.
Kit contents
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4 × Wiseco pistons K745M825
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4 × 20 mm wrist pins + locks
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1 × Wiseco ring pack (1.0 / 1.2 / 2.8 mm)
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Installation sheet with clearance and torque data
Installation guidelines
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Piston-to-bore clearance: 0.04–0.05 mm for street use; 0.06 mm for boost > 30 psi.
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Set ring gaps to target boost (≈ 0.14 mm per 25 psi for the top ring).
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Check valve-piston clearance when cam lift ≥ 11 mm; deepen pockets if necessary.
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Use high-ZDDP 5W-40 / 15W-50 oil and shorten change intervals on 500 + hp engines.