Bump Cups

Bump Springs – are used in conjunction with a primary spring to allow a race car to have a relatively soft initial spring rate to get down to the desired optimum ride height, and then pick up the rate of the bump spring to achieve a constant dynamic ride height.

• Free length 2.125″
• Free length 2.4″
• 1.96″ OD
• Ultra-Lightweight for reduced un-sprung weight with maximum travel
• Maintain free length and rate throughout a near infinite operational life
• Made in the USA

Bump Cups and the ST Springs are available individually.
14mm (and/or 1/2) Bump Cups  – Fit 14mm (and/or 1/2) Shock Shaft and Bump Spring Rates 300-2500
5/8 (and/or 16mm) Bump Cups – Fit 5/8 (and/or 16mm) Shock Shaft and Bump Spring Rates 300-2500
345 14mm (and/or 1/2) Bump Cups – Fit 14mm (and/or 1/2) Shock Shaft and Bump Spring Rates 3000 – 7000
345 5/8 (and/or 16mm) Bump Cups – Fit 5/8 (and/or 16mm) Shock Shaft and Bump Spring Rates 3000-7000