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Designed for cross displacements, this piston fits into 125 cm3 engines such as the KTM 125 SX / EXC / EXC SIX DAYS (model year 2000) — please check the exact compatibility with your model before installation. During installation, follow the manufacturer's recommendations for checking piston/cylinder clearance and initial break-in to ensure optimal performance. A precise replacement part, suitable for engine tuning and terrain requirements.