4-Link Suspension Geometry Calculator

4-Link Suspension Calculator

ParameterDescription
Upper Link Length (UL)Length of the upper control arm/link
Lower Link Length (LL)Length of the lower control arm/link
Upper Link Angle (ULA)Angle of the upper link relative to the horizontal
Lower Link Angle (LLA)Angle of the lower link relative to the horizontal
Roll Center Height (RCH)Height of the roll center from the ground
Anti-Squat PercentagePercentage of weight transfer under acceleration countered by suspension geometry
Anti-Dive PercentagePercentage of weight transfer under braking countered by suspension geometry
Instant Center (IC)Point where the upper and lower links intersect when extended
Vertical Separation (VS)Distance between upper and lower links at the axle end
Horizontal Separation (HS)Distance between upper and lower links at the chassis end
Pinion AngleAngle of the differential pinion relative to the driveshaft
Track Width (TW)Distance between the left and right wheels
Wheelbase (WB)Distance between the front and rear axles
Suspension TravelMaximum vertical movement of the axle
Ride Height (RH)Height of the chassis from the ground
Spring RateStiffness of the suspension springs (measured in lbs/in or N/mm)
Shock Absorber CharacteristicsDamping properties of the shock absorbers

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