Heavy Chair Spring - red (pair)

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  • Regular price $150.00
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These heavy tension Stability Chair Springs are made exclusively for Merrithew Stability Chairs. Each is nickel-plated and heat-treated to protect the base material of the spring. This ensures the quality and integrity of its tension throughout its life through demanding studio use.

Sold as a pair.

Note: this item is for use with Merrithew/STOTT PILATES® equipment only.



Spring performance

  • Our springs are built to withstand vigorous use in professional or commercial environments
  • To maintain performance and warranty, springs require replacement every two years

Spring resistance details

  • Overall length of the spring is 18 in with an initial tension of 14.75 lbs (load required to open the coils without extension)
  • Spring rate of 3.888 lb/inch (load required to extend spring every inch after the initial tension is applied)



Trapeze Spring / Stability Chair · Heavy Spring 14.75 lbs +/- 1.5 lbs
(6.7 kg +/- .7 kg)
3.888 lbs/in +/- 5%
(.68 N/mm +/- 5%)
18 in
(45.7 cm)
1.2 in
(3 cm)


Warranty - 2 years All springs

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