Unsprung weight explained

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Sprung weight is the mass of those parts supported by the suspension.

Unsprung is the rest; wheels, tyres, brakes, chain etc. Changing the unsprung weight has no direct effect on springing (as it's not supported) but reducing it can make a big difference to the ease with which a bike can change direction.

For example, lighter wheels produce smaller gyroscopic forces.

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Marc Abbott

By Marc Abbott