





Standard Bore Cylinder Kit Ø 54 mm, 125 cc
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WARNING: For installing this cylinder kit on the models YZ 125 LC 1997-1998, please replace the original exhaust muffler with 1999-2003 version and for the models 1997-1999 are absolutely necessary 2 original Yamaha torsion springs (valve) year 2000-2003. Race Use Only Product – Not intended for street use – Please check details on the “Race use only” footer’s section WARNING: the cylinder head and base gaskets contained in the kit are specifically developed for Athena cylinders kits. Whenever the cylinder kit is disassembled, replace the gaskets with the specific Athena spare gasket kit: DO NOT use OE replacement gaskets.
Standard Bore Cylinder Kit Ø 54 mm, 125 cc
- Same reliability and performance of the original components
- Maximum durability and smoothness guaranteed by a special nickel and silicon treatment
- Gaskets developed with the most advanced technologies to ensure maximum tightness even at high temperatures and pressures
Bore Diameter (mm)
54
Displacement (cc)
125
Compression Ratio
14.8:1
WARNING: For installing this cylinder kit on the models YZ 125 LC 1997-1998, please replace the original exhaust muffler with 1999-2003 version and for the models 1997-1999 are absolutely necessary 2 original Yamaha torsion springs (valve) year 2000-2003. Race Use Only Product – Not intended for street use – Please check details on the “Race use only” footer’s section WARNING: the cylinder head and base gaskets contained in the kit are specifically developed for Athena cylinders kits. Whenever the cylinder kit is disassembled, replace the gaskets with the specific Athena spare gasket kit: DO NOT use OE replacement gaskets.
- Same reliability and performance of the original components
- Maximum durability and smoothness guaranteed by a special nickel and silicon treatment
- Gaskets developed with the most advanced technologies to ensure maximum tightness even at high temperatures and pressures
Bore Diameter (mm)
54
Displacement (cc)
125
Compression Ratio
14.8:1
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