1984-2015 All Models w/Robin Twin 9hp-11hp Secondary/Driven Springs




All springs are within 5% tolerance of spec promoting consistency when changing to a different application. Most OEM use up to a 15% tolerance because it is cheaper to build.

  • All springs are ISO 9001 certified.
  • All springs are high chromium silicone / high tensile strength wire ensuring consistency of rate, poundage and repeatability.
  • All springs color coded for reference only. Color is not representative of any OEM / aftermarket spring

Additional information:

Weight .5 lbs
Dimensions 5.5 × 2 × 2 in