To what air pressure can someone realistically pump to with a hand operated bike pump?

You should never use a regular bike pump on an air shock. Shock pumps are small and only pump a small amount of air per stroke to reach the very high pressures used in forks and shocks. Some tire pumps can reach these high pressures but they pump far too much air, you cannot accurately pump your shock to the correct pressure.

Shock pumps are not very expensive and are necessary if you have an air fork or shock.

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