ATHENA Cylinder Head Gasket for RIEJU SM 125 and YAMAHA WR 125 2009-2018

The ATHENA S410485001248 head gasket is designed for YAMAHA WR 125 and RIEJU SM 125 from 2009 to 2018. The head gasket seals between the cylinder head and the cylinder: it holds in the combustion pressure and, depending on the engine, the coolant. Crushed when tightened, it can never be reused.

Specifications

• Brand: ATHENA
• Manufacturer part number: S410485001248
• EAN code: 8051757218226
• Weight: 40 g
• Engine: 4-stroke

When to replace it?

• Loss of compression, less lively engine.
• Black marks or hissing at the head/cylinder joint.
• Coolant level dropping, bubbles in the radiator.

Every time the cylinder head is removed, and therefore at every piston change.

Fitting tips

1. Clean the cylinder head and cylinder faces without scratching them.
2. Fit the gasket dry, the right way round, centred on the studs and the coolant holes.
3. No sealant on the gasket.
4. Tighten the cylinder head in a criss-cross pattern, in several stages, to the manufacturer's torque.
5. Refill the coolant and take the opportunity to replace the spark plug.

Why ATHENA?

Athena, an Italian company founded in 1973 near Vicenza, designs gaskets, pistons and cylinder kits for motorcycles. An OEM supplier to KTM, Ducati, Fantic, Piaggio and Triumph and a partner of the MXGP world championship, it develops its parts on the test bench and on the track with racing teams.

Spare parts and items to plan

• Piston : ATHENA
• Coolant : LIQUI MOLY 1 L · TWIN AIR

Frequently asked questions

Is the gasket enough to refit the cylinder head?
It replaces the head gasket only. If you also remove the cylinder, go for a complete top end gasket kit instead.

Compatibility

Check the exact model and year of your bike in the list below before ordering.

Fits:
RIEJU SM 125 2018
RIEJU SM 125 2017
RIEJU SM 125 2016
RIEJU SM 125 2015
RIEJU SM 125 2014
RIEJU SM 125 2013
RIEJU SM 125 2012
RIEJU SM 125 2011
RIEJU SM 125 2010
RIEJU SM 125 2009
YAMAHA WR 125 2011
YAMAHA WR 125 2010
YAMAHA WR 125 2009