2007 crf450 conversion started ! advise welsome

[trgracing]

hi, finally started the conversion, stripped my crf frame, and fitted the core cr500 motor, havent cut the y out yet, { just had a look } anyway, i noticed the rear shock spring, { when bike on stand } has the smallest clearance,, when off stand and compress suspension, clearance gets good... any body have a solution? have noticed some people on crf250x have given their cases a shave... and ideas or comment please, will be posting pictures all the way..... by the way mine is 450x is that a diff with suspension tie rods

[eyesky2002]

My 03 does not hit with a stock spring and looks like plenty of clearance to go to a little larger spring. Check Bob's build, he had to notch his cases for his big boy spring.

[trgracing]

mine is stock......

[nmdesertrider]

the 06 450f we did needed to get shaved to fit a spring for a heavier rider

[teemtrubble]

It's pretty common having to relieve the cases for shock spring clearance in conversions.