GDOOL 4-Pack 108mm Adjustable Alloy RC Shock Absorbers for 1/10 HSP Redcat Volcano EXP/Pro S30 (Black)
These GDOOL 4-pack 108mm adjustable alloy shock absorbers are built for 1/10 scale RC trucks like the HSP Redcat Volcano EXP/Pro S30. Each shock measures 108mm total length with a 100mm hole-to-hole spacing, features an aluminum body and nylon ball ends, and arrives without oil so you add the right weight yourself.
What Vehicles Fit These Shocks?
This set is a direct fit for HSP 94111 and 94188 models, as well as the Redcat Volcano EXP, Pro, and S30 monster trucks. They also work with many 1/10 scale cars from Traxxas, HPI, Axial, Tamiya, and Himoto when paired with appropriate hardware. You will need long screws and washers for mounting—not included.
Specs at a Glance
| Total Length | 108 mm / 4.25 in |
| Hole Center to Center | 100 mm / 3.94 in |
| Spring Diameter | 17 mm / 0.67 in |
| Ball Head Aperture (with ball) | 3 mm / 0.12 in |
| Ball Head Aperture (without ball) | 5 mm / 0.20 in |
| Body Material | Aluminum Alloy |
| Ball End Material | Nylon |
| Position | Front and Rear |
| Color | Black |
What's in the Pack and How to Prepare
The package contains four complete shock absorbers—enough for a full front and rear setup on most trucks. They come dry: no oil inside. Before you install them, fill each shock with silicone shock oil of your preferred weight. This lets you dial in damping for your driving style, from plush crawling to firm jump landings. The adjustable spring collars let you tweak ride height and preload.
Build and Adjustability
Each shock uses a CNC-machined aluminum alloy body for strength without adding weight. The nylon ball ends pivot freely and resist wear. The threaded body allows fine adjustment of spring tension, which helps the shocks handle repeated hard landings. Many hobbyists use these as a direct hop-up replacement for stock plastic shocks on 1/10 trucks.
Frequently Asked Questions
Do these shocks come pre-filled with oil?
No, they arrive empty. You must add shock oil before first use to get proper damping performance.
Will they fit a Traxxas Stampede?
They fit many 1/10 Traxxas models, but you may need to swap the ball ends or use longer screws. Check your mounting points and hole spacing before buying.
What is the spring rate?
The exact spring rate is not specified, but the springs are adjustable via the threaded collar to increase or decrease preload.
Are replacement parts available?
The package includes only the four shocks. Replacement springs or ball ends are not included but may be available separately from GDOOL.