Honda CR or CRF Aluminum Frame (AF) Generations?

[ssrobzoom]

What are the different revision/generation on the Honda Aluminum frame?

 

I would like to do a engine swap in a late model frame and put in a 2001 two stroke engine.

 

What years are the changes?

 

 

[Crazyced]

What are the different revision/generation on the Honda Aluminum frame?

 

I would like to do a engine swap in a late model frame and put in a 2001 two stroke engine.

 

What years are the changes?

 

For the 250-450F

 

1st Gen: 1997-1999

2nd Gen: 2000-2001

3rd Gen: 2002-2004 (2007 for the 2 strokes)

4th Gen: 2005-2008

5th Gen: 2009-2012

6th Gen: 2013-

Edited May 22, 2014 by Crazyced

[ssrobzoom]

Which generation would be the best for doing a 4 stroke to 2 stroke conversion?  I would like to use a 2001 honda ( of course) motor. 

 

Also, which generation handled the best?

[Spyder328]

The easiest would be the 3rd gen CR250 frame. They handled pretty good, but not as good as a more modern frame.

[majikman808]

Which generation would be the best for doing a 4 stroke to 2 stroke conversion? I would like to use a 2001 honda ( of course) motor.

Also, which generation handled the best?

If you're going to do a swap i would do a gen 5. To me it was a lot easier than a gen4. The gen three is a weekend swap with very little gain. Are you going to do it yourself?

[ssrobzoom]

@ majikman808

 

 

 

I will be seeking some assistance on the swap.  It looks straight forward by the videos I have watched but I cannot weld alumium.  Who do you suggest to do this or the welding?

 

So Gen 5 is that way to go then,  What about the Gen 6?

Edited May 27, 2014 by ssrobzoom

[majikman808]

Gen 6 would be the ultimate but parts are less common and more expensive. I'm in my gen 5 about $4500-5000 tops. And i'm in Hawaii so parts are rare or I have to pay insane shipping prices to get parts shipped here. You can pm me and i can give you more details on the build. I'm about to do another one in a month or so.

[ssrobzoom]

Can you post some pic of the conversion?  The build process.

[ssrobzoom]

Are you sure this is the correct information on the different generations?

 

I have looked on ebay and this info does not line up on year models.

 

 

For the 250-450F

 

1st Gen: 1997-1999

2nd Gen: 2000-2001

3rd Gen: 2002-2004 (2007 for the 2 strokes)

4th Gen: 2005-2008

5th Gen: 2009-2012

6th Gen: 2013-

[majikman808]

Are you sure this is the correct information on the different generations?

I have looked on ebay and this info does not line up on year models.

For the 250-450F

The mix up is in the 250f's lagging a year. The crf250 04-09 frame is totally differant from the 05-08 450. But they consider it the same gen

1st Gen: 1997-1999

2nd Gen: 2000-2001

3rd Gen: 2002-2004 (2007 for the 2 strokes)

4th Gen: 2005-2008

5th Gen: 2009-2012

6th Gen: 2013-

[ssrobzoom]

I looking to purchase a frame and the seller states this:

 

 

Quote 

 

"Item Description:

This frame is from a 2006 CRF250r. 

 

Fitment:

2004 - 2009 crf250r

2004 - 2014 crf250x- but there is no kickstand mounting so you will not have a kickstand for this frame"

 

So should this be a Gen 5 frame he is selling?

[Spyder328]

I don't know about the 4t frames but I can confirm that the 2t frames are:

 

1st gen. 1997-1999 (cr125 was 1998-1999)

2nd gen. 2000-2001

3rd gen. 2002-2007

 

Then after that I'm not sure because I'm not a 4t guy ?

[ssrobzoom]

I'm trying to purchase a Gen 5 frame for the 4 to 2 stroke conversion engine swap

[RippinCR250]

I looking to purchase a frame and the seller states this:

 

 

Quote 

 

"Item Description:

This frame is from a 2006 CRF250r. 

 

Fitment:

2004 - 2009 crf250r

2004 - 2014 crf250x- but there is no kickstand mounting so you will not have a kickstand for this frame"

 

So should this be a Gen 5 frame he is selling?

The CRF 250 remained the same frame until 2010 when it had a major upgrade to the gen 5 frame (2009-2012 CRF450)

I believe 04-09 is a gen 4 in the CRF250's.

Disregard the CRF250X model years as this bike remained unchanged over the years........hope this helps

[ssrobzoom]

Yes thanks for the information