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benno387 benno387
11/15/2017 4:10 AM

As the post states guys just wondering if there is a kit to turn a 2007 cr250 into a 300
Cheers

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Acidreamer Acidreamer
11/15/2017 6:07 AM
This should work for you

2009 Kawasaki KX450F
2009 Kawasaki KX250F
2002 Suzuki GSXR 600

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H4L H4L
11/15/2017 7:18 AM

Give them a call to see if they ever developed the kit.

https://www.eddie-sanders-racing.com/product_p/cr250-02-07-big-bore--325.htm

Speak softly and carry a big stick.

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Donovan759 Donovan759
11/15/2017 7:28 AM
Acidreamer wrote: This should work for you

Not sure how you did that... or if it was supposed to be funny... but I just laughed out loud.. hahaha

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mwssquad827 mwssquad827
11/15/2017 10:48 PM

Why???

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Kawasaki-rider Kawasaki-rider
11/16/2017 9:58 AM
Acidreamer wrote: This should work for you
Donovan759 wrote:

Not sure how you did ...more

Lmgtfy.com does the trick mate cool

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H4L H4L
11/16/2017 10:15 AM
mwssquad827 wrote:

Why???

It's appealing to some looking for more torque due to displacement over a 250 2t, yet more manageable than a CR500. It falls in between the 2.

Probably the same reason KTM makes a 300 2t.

Speak softly and carry a big stick.

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mwssquad827 mwssquad827
11/16/2017 12:43 PM
mwssquad827 wrote:

Why???

H4L wrote:

It's appealing to some ...more

Go buy a ktm then. You know it works and will work for ever.. a kit that some “dude” makes doesn’t sound like it would work.. why not make it a 350 then?

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c0ncEpT c0ncEpT
11/16/2017 1:29 PM

I have a 1990 CR250 that had a sleeve put in to make it 310cc, Some company called Kustom Kraft did it.

IMO it was a real piece of shit. The workmanship was poor. The power valves were cut down to "fit". Which they didn't. It moved the power all down low and lost all of its top end power. It felt like a super slow 500.

Needless to say it now has a stock jug to take it back to 250cc.

Race Bike: 2018 KTM 350SXF

Other Bikes: 1985 CR80R, 1990 CR250R, 1998 PW80, Specialized Fuse Comp 29.

Sold: 2016 YZ250F, 2012 CRF250R

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benno387 benno387
11/16/2017 1:30 PM
mwssquad827 wrote:

Why???

H4L wrote:

It's appealing to some ...more

mwssquad827 wrote:

Go buy a ktm then. You ...more

I already have enough bikes and don't want to buy another
But as H4L said its the inbetween bike
Was out of curiosity if anyone had made a decent kit that was bolt on instead of having to machine up any part of my engine
Wanted to keep the 250 parts so I can put it back together later on
A 300 is more suited to my riding style being bush and desert
Plus how cool would it be to be riding a cr300 haha

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H4L H4L
11/16/2017 2:05 PM
mwssquad827 wrote:

Go buy a ktm then. You ...more

LOL ! He is not just some "dude" he has a good reputation with locals here in CA.

ESR RACING

Eddie Sanders Racing has been developing products for nearly 25 years! That experience has given us the ability to bring you some of the most innovative and successful designs the industry has to offer: We pride ourselves in the vast array of services and products we supply to quad racers all over the world. Each product is thoroughly tested and fitted to ensure longevity and performance. Our new facility at Pismo/Grover Beach is located at the heart of the duning scene, allowing us to test it in real world conditions At ESR, we “race what we sell”, so our reputation is based upon the success of our products at the race track, they don’t only have to look good they have to work too! We utilize state of the art CNC machines to produce our parts within the walls of our facility, so we can maintain our product quality and assure availability. At Eddie Sanders Racing, our goal is to provide a “one stop shop” for all your racing engine needs. You’ll not only benefit from our race winning heritage, you’ll also receive expert technical advice and customer service from our staff!

Speak softly and carry a big stick.

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H4L H4L
11/16/2017 2:06 PM
c0ncEpT wrote:

I have a 1990 CR250 that ...more

This is not a sleeve. It's an actual cyl. / head + piston he produces.

Speak softly and carry a big stick.

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mwssquad827 mwssquad827
11/16/2017 2:14 PM

They must be awesome!! Because everyone is lining up to put a 300 kit on cr’s.. I’m with concept.... but if you wanna do it.. do it.. who cares what i think

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Loch Loch
11/17/2017 12:28 AM

Have a 273 07 from two stroke performance,it’s a 265 with a Ktm rod with a spacer,nice power and a 54 dyno that I got done on his dyno,wasn’t cheap but is nice to ride with a broad spread of power,my 2cents,not 300 but close.

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40 40
11/17/2017 5:34 AM
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Millennium Technologies Millennium Technologies
11/20/2017 10:58 AM

CR295 is possible, but quite frankly, the 265cc combination works better, makes almost the same power and is infinately more reliable.

http://www.millennium-tech.net/master_bbk.php

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mwssquad827 mwssquad827
11/20/2017 2:02 PM

No way dude,, there’s is a dude that makes a 300 kit that is reliable and FUUUCKIN rips bro!! But no one has heard of him but some locals in Cali.. hahaha

Go ahead H4L


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H4L H4L
11/20/2017 6:23 PM
mwssquad827 wrote:

Go buy a ktm then. You ...more

I've ridden the new orange / white KTM's & wasn't impressed. Not everybody is going think they "will work for ever"...

For some it's good to know there are options for the CR to get a bigger bore. I'm contemplating picking up a 325cc kit when they become available. I'll let you know how it runs if I go that route...

Speak softly and carry a big stick.

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mwssquad827 mwssquad827
11/21/2017 3:02 PM
H4L wrote:

It's appealing to some ...more

mwssquad827 wrote:

Go buy a ktm then. You ...more

H4L wrote:

I've ridden the new orange ...more

Friendly banter is all H4L!! Good luck on the 325

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moto314 moto314
11/21/2017 9:06 PM

X2!

recmx.com

REC MX, JE Pistons, Wiseco, Rusk Racing, Yoshimura, Enzo Racing, Dubya Wheels, Asterisk, Rocket Performance, CCR Sport, & MMR

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40 40
11/22/2017 5:14 AM
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H4L H4L
11/22/2017 6:44 AM
mwssquad827 wrote:

Friendly banter is all ...more

NP.. Happy Thanksgiving !

Speak softly and carry a big stick.

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Mx286 Mx286
11/23/2017 8:49 AM

You may want to speak to some reputable engine builders on doing a big bore on that motor. Many I’ve talked with said the big bore on the CR’s makes them worse, and it did for mine. Eric Gorr did a 265 on my 06 and it was a turd. Went back to the stock bore with head work from PR2 and it was much better.

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H4L H4L
11/23/2017 9:28 AM

EG doesn't have the best reputation as an engine tuner. I've never understood why someone would go through the hassle of only going 15cc's bigger on an engine with really not much to gain. The other hassle would be having to buy a special piston that is not readily available like the standard bore.
The CR250 can be tuned to run really good in the hands of a good engine tuner.
I can see someone looking for a little extra torque by going to a 300cc kit though.

Speak softly and carry a big stick.

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