This is a set of Blue Shock Springs for the HPI Hellfire,

FEATURES:

Constructed of steel, blue in color

INCLUDES:

Two Blue Shock Springs for the HPI Hellfire

REQUIRES:

Installing over shock body

SPECS:

length: 3.1" (80mm)
diameter: 0.71" (18mm)
Number of Coils: 12.5
Spring Rate: 4.0 (71) softest 5.1lb/in

COMMENTS:

Other shocks in this series include;
HF8545 Shock Spring 14.5 Coil Purple (softest)
HF8805Shock Spring 10.5 Coil Silver (soft)
HF8825 Shock Spring 12.5 Coil White (medium)
HF8805 Shock Spring 10.5 Coil Red (firmest) 
HF8808 Shock Spring 8.00 Coil gunmetal (Hard) (For on roand use)