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Home / Suspension & Lift Kits / Shocks & Struts / Rough Country 770738_B
Rough CountryPart 770738_B · UPC 00840269907142

M1 Monotube Rear Shock Pair for Avalanche 1500 & GMC Suburban

$179.95MAP price
In stock — 286 available
Shipping weight: 13.01 lb.
  • Fits 2002-2006 Chevrolet Avalanche 1500 (4WD and RWD) and 1970-1978 GMC Suburban applications — confirm your row in the fitment table
  • Kit contains 1x M1 Monotube Shock Pair for the rear axle
  • 46mm monotube body, digressive piston, 18mm chromed and polished rod, 2-inch extruded tube
  • Zinc-plated housing with vulcanized natural rubber bushings
  • Listed install time: 1-2 hours
  • 3 Year Limited Warranty — shipping weight: 13.01 lb

The Trail Fortress check

Will it fit your truck?

✓ Fits

2002–2006 Chevrolet Avalanche 1500 · 4WD/RWD
BaseLSLTNorth FaceOn Road EditionWBHZ66Z71
1975–1978 GMC C15 Suburban · 4WD/RWD
BaseHigh SierraSierra ClassicSierra Grande
1975–1978 GMC K15 Suburban · 4WD/RWD
BaseHigh SierraSierra ClassicSierra Grande
1970–1974 GMC C15/C1500 Suburban · 4WD/RWD
Base

+ 1 more applications

About this kit

M1 Monotube Rear Shock Pair, fitment-checked

Rough Country 770738_B is a rear shock pair from the M1 monotube line, shipped as a kit containing one M1 Monotube Shock Pair. Covered applications include the 2002-2006 Chevrolet Avalanche 1500 in 4WD and RWD, plus RWD and 4WD GMC Suburban models from 1970-1978. Carries a 3 Year Limited Warranty.

This M1 monotube rear shock pair fits the 2002-2006 Chevrolet Avalanche 1500 in both 4WD and RWD, along with GMC C15/C1500, C15, K15/K1500, and K15 Suburban applications spanning 1970-1978 in the trims listed in the fitment section. The 46mm monotube body uses a digressive piston with self-adjusting deflective-disc rebound and compression control, riding on an 18mm case-hardened chrome rod inside a 2-inch extruded tube. Zinc plating and vulcanized natural rubber bushings handle road spray and grit. Rough Country lists install time at 1-2 hours for the pair. Check your model year and drivetrain against the fitment rows before ordering.

What’s in the box

Kit contents

  • 1× M1 MONOTUBE SHOCK PAIR 770738P

Rough Country shares subassemblies across kits, so individual package labels can carry broader application ranges. The complete 770738_B kit fits the vehicles shown in the fitment section above.

Specifications

Specs

BrandRough Country
Part number770738_B
UPC / GTIN00840269907142
Shock packageM1 series
Shipping weight13.01 lb
Warranty3 Year Limited Warranty
Country of originCN
CategorySuspension & Lift Kits › Shocks & Struts

Why buy here

The fitment-first store

Manufacturer-listed exclusions shown. We publish what a part does not fit — before you buy, not after the return.
Sourced from the application data. Fitment on this page comes from the manufacturer’s application catalog, not a copied listing.
Real install docs. The actual step-by-step guide, linked right on the page.