This is a set of gray 84mm big bore shock springs for the Kyosho Inferno ST-R truggy and MP9 buggies. These are the medium length springs that are used for the front of the ST-R trucks, and the rear of the MP9 when equipped with medium length shocks.

Medium Length 84mm Shock Spring Specifications:

• Softer
• IS106-9514: Yellow – 9.5 turns/1.4 wire (2.95lb-in / 527.50 n/m)
• IS106-914: Green –  9 turns/1.4 wire (3.16lb-in / 565.18 n/m)
• IS106-8514: Orange  – 8.5 turns/1.4 wire (3.40lb-in / 608.65 n/m)
• IS106-814: Light Blue – 8 turns/1.4 wire (3.68lb-in / 659.38 n/m)
• IS106-7514: Gray – 7.5 turns/1.4 wire (4.02lb-in / 719.32 n/m)
• IS106-1116: White – 11 turns/1.6 wire (4.11lb-in / 729.08 n/m)
• IS106-1016: Purple – 10 turns/1.6 wire (4.62lb-in / 820.22 n/m)
• IS106-916: Light Green – 9 turns/1.6 wire (5.28lb-in / 937.39 n/m)
• IS106-816: Blue – 8 turns/1.6 wire (6.16lb-in / 1093.62 n/m)
• Harder

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

Fits:

• Kyosho Inferno MP777
• Kyosho Inferno MP9
• Kyosho Inferno MP9 TKI2
• Kyosho Inferno MP9 TKI3
• Kyosho Inferno MP9e

Spec

• Brand: Kyosho
• Part No: K.IS106-7514
• Barcode: 4548565258055
• Fitment: Option Part