CR85 shock and forks on a CRF150

I'm about to install modified CR85 shock and forks on my '04 CRF150. The springs are stock CR85. Front is .28 rear is 5.2. Will I need to install heavier springs to compensate for the difference in weight? The CR85 weighs 145 lbs., the CRF150 weighs 216 lbs. Difference of 71 lbs. I weigh about 175 with all gear on. I ride all trails no MX, tight technical single track(roots, ruts, logs, stumps, rocks, etc...), fast double track and logging roads at altitudes of 3000-7500 ft ASL.

Cheers, :naughty:


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