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Dirt Bike Discussions By Brand
Yamaha MX & Off-Road Dirt Bikes
WHOA YZ450F 39 inch seat height!
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[QUOTE="nikki, post: 692893, member: 18126"] All three bikes are virtually at showroom stock settings in the suspension area and the sag is around 100mm for the owner and the amount of free sag at the current race sag settings is between 15mm and 30mm so right in line with where it should be. None of the forks have been moved in the clamps. 04 CRF 250 - came home with 100-105mm of sag for a 145 lb with gear rider. The free sag is at 30mm so the shock spring rate is a little on the stiff side but won't be swapped out. 04 CRF 450 - came home with 95-100mm of sag for a 250 lb with gear rider. The free sag is at 15mm so the shock spring rate is a little on the soft side but won't be swapped out. 03 YZ 250F - came home with 100mm of sag for a 140 lb with gear rider. The free sag is at 30mm so the shock spring rate is a little on the stiff side but won't be swapped out. So it seems that the seat height comparison should be fairly accurate since the bikes all have stock spring rates and free sag within spec (between .6 and 1.2 inches). Now I did ride an 04 YZ 450F yesterday that had to sit at least 1 inch higher than my 250F (stock suspension and sag set for a 135 lb with gear rider). So once again, maybe my lower 250F seat height is an exception? [/QUOTE]
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Yamaha MX & Off-Road Dirt Bikes
WHOA YZ450F 39 inch seat height!
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