Big Bore Kit

[JBSracing]

This thread is a little old now but I found it the other day so I joined the site to make this post.

I have been developing big bore kits for the KX 500 for about a year now. I am now testing a big-bore kit using a 97mm piston with a standard 86mm stroke which gives 635cc, I have already tryied a stock piston with an 88mm stroke which I get using a 27mm pin and big-end and offset boring a stock crank. The next step is the 97mm piston and the 88mm stroke which will give me 650cc after that I am looking at a billet crank with a 90mm stroke giving 665cc.

To use the piston you need to bore out your stock barrel and install a Moly-Iron liner, also a small amout of case machining is needed to take the larger skirt diamiter that this gives.

If any one is interested mail me ben.ballard@jbsracing.co.uk and I will give you full details.

Also available is a big-bore kit that I have developed to take the Husaberg 65o to 750cc.

Ben
JBSracing

[370banshee]

sounds cool... talk to flattrack he likes KX500's

[JBSracing]

MESSAGE TO BERTDEGROOT -

I got a mail saying that you PM'd me, as this is the only post I have ever made on this website I assume its about the above?? Unfortunatly I can't access my messages on this site, something is not working with my account. So please email me ben.ballard@jbsracing.co.uk. Cheers BERT

[JBSracing]

BERTDEGROOT

I have found out why I can't read your message I have to make 5 posts befor I can get to that feature this will be my 4th.

[JBSracing]

And this is my 5th. Now I'll see what you PM'd me if I can.

Ben
JBSracing