Combustion chamber insert Big Bore Domes Athena 392 Upgrade to 421cc for Wiseco forged piston 573M06800 piston dome Yamaha Banshee RD350 +4/115

Combustion chamber insert Big Bore Domes Athena 392 Upgrade to 421cc especially for Wiseco forged piston

These are CNC-machined combustion chambers that can be run plug and play with a bigbore crankshaft and the Wiseco forged piston 573M06800.
So if you are looking for a plug and play solution that is also durable and easy to fit, these combustion chambers are the right choice!

Nothing needs to be reworked here because the crushing edge or the compression does not fit, as is the case with the domes from America.

 
Scope of delivery:

1 piece = 2x custom domes

Fitting instructions:

    Replacement of the existing combustion chambers
    Can only be used in combination with another crankshaft.
        Crankshaft bigbore +4mm stroke and 115mm connecting rods
    Works with the Athena cylinder head
    Works with all common coolheads
    All original Athena O-rings can still be used

 
Further information:

    Material aluminium 7075 high strength
    The domes are specially adapted to the Wiseco forged piston 573M06800
    The domes are designed so that they can be used with all commercially available 0.3mm (or larger) foot seals
    A pinch edge of approx. 1.1 - 1.2 mm is set in the specified combination (May vary slightly due to manufacturing tolerances of cylinder, engine block, etc.)


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Instructions for use:

    Required for the conversion from an Athena 392 to 421ccm
    Not authorised for road use!