Supplied unbored and without the feed hole for you to bore to suit your requierments.
We can do this for you - order ET21AS-BORING. If you are not buying pistons at the same time send your pistons to us with details of clearance required.
When you order an ET22AS cylinder assembly we can bore it for you.
We dont drill oil hole anymore as it vary from bike to bike.
If you are not buying pistons at the same time send your pistons to us with details of clearance required.