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Athena standard bore cylinder kit (part reference P400270100028) for 250 cc four-stroke applications, supplied with a 78 mm bore cylinder, forged piston, pin, rings, and complete gasket set. Designed to match original engine specifications for direct fit with no modifications required.
Features
Standard bore cylinder kit Ø 78 mm, 250 cc
High-grade aluminium cylinder for heat transfer and wear resistance
Forged piston, CNC-machined
Molybdenum disulphide piston coating to reduce friction and noise
Piston pin and rings included, manufactured from aerospace-grade materials
Complete gasket set included
MLS head gasket, laser-cut stainless steel for high-pressure sealing
Designed to match OEM specifications
No modifications required for installation
Athena part reference: P400270100028
Specifications
Bore diameter: 78.00 mm
Displacement: 249.00 cc
Vehicle Fitments
GAS GAS EC F 250 cc (2021–2023)
HUSQVARNA FC 250 cc (2021)
HUSQVARNA FE 250 cc (2020–2023)
KTM EXC-F 250 cc (2020–2023)