Cafe Racer Forum banner

Help w/ XS400 engine modifications

13748 Views 7 Replies 5 Participants Last post by  Sidney Franklin
Anyone modify an XS400 for improved performance? Are cams available? Any OEM parts that are common? Does an XS500 engine fit?

Thinking valve job, and mill the head for a little more compression. Aftermarket Trumpet slip-ons, new jetting. Nothing crazy, just a little more power.


Sidney Franklin
Bloomington, IL
1 - 1 of 8 Posts
Never looked, but I would try the usual sites, megacycle, webcam, powroll etc.
There's bound to be something out there. Is that an 8 valve head like the 500?

1 - 1 of 8 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.