Big bore kit for CR500

23champ · Post by **23champ** » January 2nd, 2011, 9:13 am

I was checkin out Eric Gorrs website and saw that he offers a big bore kit for the CR500, making it 520cc. Anyone know anything about these 520 kits? I'm just curious to see what size the bore is on the 520 kit.

NightBiker07 · Post by **NightBiker07** » January 2nd, 2011, 9:41 am

If you are looking for Cr500 big bore, look no further than CPI....

check out this thread

http://bannedcr500riders.com/board/view ... hp?t=10068

http://www.youtube.com/user/500bigbore · Post by **Roostius_Maximus** » January 2nd, 2011, 10:21 am

I have a custom wiseco intended for a seadoo that will make it 525, i have a cylinder ported for it too, 4mm needed to be cut off the base to make it work, OR it could have had stroke added

bearorso · Post by **bearorso** » January 2nd, 2011, 2:38 pm

I've been meaning to ask if anyone had / knew of anyone using these kits from RPM. This post reminded me.

They use CPI cylinders for over 560cc.

Big bore And stroker kits. This direct link is for a 540cc - 91mm bore and 83mm stroker kit. The price for the parts listed is very reasonable (seems incredibly cheap, actually), as is the labour. The more I look at it, and consider how much others are charging, it looks like a bargain

Here's a link, see to the left for other sizes:

http://rpmmfg.com/BigBoreStrokerCR540.aspx

bigred1977 · Post by **bigred1977** » January 3rd, 2011, 2:07 am

there is some dude down in the south island here in new zealand that runs a cr600,dont know what setup it is but all i know is it kicks arse in all the beach racing and motard,rumour has it that it produces 88hp,but it might all be wank wank talk,i will find out one day and report..

dubious01 · Post by **dubious01** » January 3rd, 2011, 10:59 am

I'm still really intruiged by the CPI or RPM Liger kit.
that would be kick ass!
I noticed their cone pipe welding is pretty ugly though...

Gonna see what develops, the problem will likely be the tire...
what tire is gonna hold that much power, maybe? an MF44? haha

hillclimbjim · Post by **hillclimbjim** » January 3rd, 2011, 2:17 pm

RPM built a kx540 back in 98 for us,it was ok but nothing great,

23champ · Post by **23champ** » January 3rd, 2011, 3:00 pm

dubious01 wrote:
Gonna see what develops, the problem will likely be the tire...
what tire is gonna hold that much power, maybe? an MF44? haha

I dont think the tire will be an issue at all, if a bike is set up properly traction is not an issue no matter how much power you have. I've seen bikes with Well over 150hp on a knobby hook like crazy.

Check this one out!
http://www.youtube.com/watch?v=RaJNquX1 ... re=related

http://www.youtube.com/watch?v=RaJNquX1 ... re=related

DieHard2Smoke · Post by **DieHard2Smoke** » January 12th, 2011, 6:26 pm

are there any other people with big bore cr500 experience?

BannedCR500Riders.com

Big bore kit for CR500

Big bore kit for CR500