M1 Monotube Rear Shocks for Chevy and GMC 3500 (1977-1986)
- Fits 1977-1986 Chevy C30/K30 and GMC C3500/K3500, plus 1977-1978 C35/K35 — RWD and 4WD applications listed in the fitment table
- Ships as one M1 monotube shock pair (rear)
- 46mm monotube design with digressive piston and 18mm case-hardened, chromed rod
- Zinc-plated body and vulcanized natural rubber bushings
- Listed install time: 1-2 hours
- 3 Year Limited Warranty. Shipping weight: 12.82 lb
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About this kit
M1 Monotube Rear Shocks, fitment-checked
Sold as a pair, this M1 monotube rear shock set covers 1977-1986 Chevrolet C30 and K30 and GMC C35, C3500, K35, and K3500 trucks in both RWD and 4WD form. The M1 uses a 46mm monotube body with a digressive piston and an 18mm chromed rod, and carries a 3 Year Limited Warranty.
This M1 monotube rear shock pair fits 1977-1986 Chevrolet C30 and K30 and GMC C3500 and K3500 trucks, including the 1977-1978 C35 and K35, across Cheyenne, Scottsdale, Silverado, High Sierra, Sierra Classic, and Sierra Grande trims in RWD and 4WD. The shock body is a 2-inch seamless extruded tube built around a 46mm monotube layout, with digressive valving that reacts as the surface changes and self-adjusting deflective discs handling rebound and compression separately. The rod is 18mm, centerless ground and case hardened. Zinc plating and vulcanized rubber bushings handle exposure. Rough Country lists installation at 1-2 hours.
What’s in the box
Kit contents
- 1× M1 MONOTUBE SHOCK PAIR 770782P$179.95
Priced components are sold separately here, so a worn shock or arm can be replaced on its own later.
Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 770782_C kit fits the vehicles shown in the fitment section above.
Specifications
Specs
| Brand | Rough Country |
| Part number | 770782_C |
| UPC / GTIN | 00840269908118 |
| Shock package | M1 series |
| Shipping weight | 12.82 lb |
| Warranty | 3 Year Limited Warranty |
| Country of origin | CN |
| Category | Suspension & Lift Kits › Shocks & Struts |
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