HPI optional 45-56mm threaded aluminum shocks
For the HPI Nitro RS4, Nitro RS4 2, Nitro RS4 RTR, Nitro RS4 Racer, Nitro RS4 Racer 2, Super Nitro RS4, Pro, Pro 2, Sport, Sport 2, and other touring cars.

FEATURES:
Aluminum shock bodies
Purple anodized aluminum threaded shock caps knurled shock spring adjusting nut
Five different pistons for various dampening rates

INCLUDES:
Two 3x31mm shock shafts
Two 10x4mm bladders
Two shock part sets trees
One 10mm teflon pistons set
Four silicone O-rings P-3 clear
Two pro linear springs 13x29mm blue 264
Two shock bodies
Two shock spring adjusting nuts
Two O-rings S-12 black
Four shock shaft guide collars
Two retainer clips
Two shock caps 12mm purple
Four E-clips E-2

HP 6824- 13x26x1.2mm 6.5 Coils (Copper/Soft) 147 gf/mm
HP 6825- 13x26x1.2mm 6 Coils (Silver/Medium) 154 gf/mm
HP 6826- 13x26x1.2mm 5.5 Coils (Gold/Hard)   200 gf/mm
HP 6841- Pro Linear Spring 13x27mm (Orange 216G/mm)
Pro Linear Spring 13x27mm (Yellow 227G/mm)
Pro Linear Spring 13x27mm (Red 238G/mm)
Pro Linear Spring 13x27mm (Green 247G/mm)
Pro Linear Spring 13x27mm (Pink 272G/mm)
Shock Spring 13x25x1.7mm 7 Coils (Red/Soft)& 535 gf/mm
Shock Spring 13x25x1.7mm 6 Coils (Blue/Firm)   672 gf/mm

Note: Spring rates are calculated under 15mm compressed condition, stated as gram-force per millimeter.
Specs listed as G/mm is equivalent to gf/mm.