Thumper Club Forum

Technical => Bike Problems/Questions => Topic started by: Ledrider on March 14, 2012, 10:02:10 AM

Title: Big Bore kits for Honda XBR500
Post by: Ledrider on March 14, 2012, 10:02:10 AM

 Would like to see if ther are still big bore kits for the Honda XBR500?  I am restoring one and making it into a cafe racer and would like a bit more power. Ant help would be appreciated
Thanks
Lance

Title: Re: Big Bore kits for Honda XBR500
Post by: SteveC#222 on March 14, 2012, 06:11:16 PM

Easiest way is to fit an XL600 barrel /piston.

http://www.thumperclub.com/smf/index.php?topic=3772.0

There are a couple of similar thread too.

Title: Re: Big Bore kits for Honda XBR500
Post by: JOOLZ on March 14, 2012, 06:45:40 PM

Yes XL600R barrel and piston, very easy swap, I have just done it. Make sure the barrel has 589 stamped on the side as other xl600 barrels have a different bore and I think the height is different

Title: Re: Big Bore kits for Honda XBR500
Post by: tommy on March 15, 2012, 12:26:18 AM

hi ledrider welcome to thumper club....tommy

Title: Re: Big Bore kits for Honda XBR500
Post by: tommy on March 15, 2012, 12:28:32 AM

hi joolz do you have to open up the crankcase to accept the xl barrel   ...tommy

Title: Re: Big Bore kits for Honda XBR500
Post by: JOOLZ on March 15, 2012, 11:06:48 AM

I didnt have to on mine, 1987 model, but I have heard that very early XBR's you have to open the cases

Title: Re: Big Bore kits for Honda XBR500
Post by: guest564 on March 17, 2012, 11:10:31 PM

I had to open up the crankcase mouths on my 85.