FTS Spring Rate Calculator
Four Two Solutions
Recommended Fork Spring Rate
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Recommended Shock Spring Rate
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Recommended Shock Race Sag
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OEM Fork Information
Suspension Brand—
OEM Fork Spring / Air Pressure—
OEM Fork Oil Weight—
OEM Fork Oil Amount—
Fork Stanchion Size—
Cartridge Damping Rod Size—
Basevalve Piston OD—
Midvalve Piston OD—
OEM Shock Information
OEM Target Rider Weight—
OEM Shock Spring Rate—
OEM Shock Pressure—
OEM Shock Oil Weight—
Shock Shaft OD—
Shock Piston OD—