YX140 Race Head Casting

This cylinder head casting has not had the combustion chamber lip machined out therefore creating a higher compression ratio which will raise the BHP level. 
 
A standard cylinder head casing has a piston clearance seat of around 1.5mm machined out where our new race head has a minor angled edge instead. 
 
We have tested this new casting in 2021 which showed great results.
 
Please Note:
Only to be used with a standard piston 56mm.
Can Be used with Z40 camshaft but no other camshaft with a higher lift of 7mm can be used.
Must only be used with standard cylinder head gasket of 1.5mm.
Valve Guides Fitted.
This is a bare casting with no internal parts or covers.
You will need to change the small camshaft bearing to a 32mm - OPTIONAL EXTRA
 
WARNING:
Don't not use with thin 0.5mm race head gasket - valve to piston contact will occur.
Do not use with High Compression piston or bigger than 56mm.
Customer to use at own risk and understands the risk of damage may occur when upgrading from standard OEM parts.
 

Item Includes (refer to item picture):
1x YX140 Race Head Casting