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This is a Kyosho Big Bore Rear Shock Spring Set, and is intended for use with the Kyosho Ultima RT5, SC and DB vehicles that are equipped with the KYOW5305V big bore shock set. These springs are considered medium hard rate.

Effects of Shock Spring Changes
Shock Spring Characteristic
Softer
  • Increased Chassis Roll
  • Increased Traction
  • Better in Bumpy Conditions
  • More Likely to Bottom Out
Stiffer
  • Decreased Chassis Roll
  • Decreased Traction
  • Increased Responsiveness
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