Actual Product May Vary

Rough Country Suspension

M1 Monotube Rear Shocks 2.5-4" Chevy/GMC Avalanche 1500 (02-06)/Half-Ton Suburban (69-91)



M1 Monotube Rear Shocks 2.5-4" Chevy/GMC Avalanche 1500 (02-06)/Half-Ton Suburban (69-91) Actual Product May Vary

Product Info

Whether you're tackling tough terrain or smooth city streets, Rough Country's Nitrogen-charged M1 Monotube Shock Absorber leads the way, delivering impeccable ride quality and performance mile after mile. Rough Country's Monotube M1 Shocks feature an internal floating piston design that keeps the shock oil and high-pressure nitrogen separate. The result is a lightning-fast reaction with no cavitation - just unbridled vibration damping at each and every obstacle. The M1 Monotube Shock Absorber is more than an upgrade - it's a true performance shock. Each shock features a steel body that is brushed and glavanized boasting a passivation sealing technology that is sure to withstand the elements. The internal 46mm digressive piston offers countless years of durability. The M1 is designed to be mounted body-up for a more interesting look on the vehicle.


  • 2-inch seamless extruded tube
  • 46mm digressive piston
  • Self-adjusting, deflective-disc independent rebound and compression
  • 18mm centerless-ground, case-hardened, chromed, and super-polished rod.46mm monotube design ensures consistent, fade-free performance in all conditions
  • Digressive valving instantly reacts to changing surface conditions
  • Zinc plated for resistance against harsh elements
  • Available in various lift heights for multiple applications
  • Durable vulcanized natural rubber bushings
  • 3-year Manufacturer's Warranty

    Notes: Sold in pairs.

    Install Time: 1-2 hours

  • Specs

    • SKU: HEC 770738_B
    • UPC: 840269907142
    • Product Sub Category: Rear Shocks
    • Data Fitment Make: Chevy, GMC
    • Data Fitment Model: Avalanche, Suburban
    • Data Fitment Year: 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 2002, 2003, 2004, 2005, 2006
    • Data Default Qt: 1
    • Data Product Type: Mom Class Bolt-on
    • Data Shipping Group: HEC shipping


    Make Model Sub-model Years
    ChevroletAvalanche 1500Base2002,2003,2003,2004,2004,2005,2005
    ChevroletAvalanche 1500LS2005,2006,2006
    ChevroletAvalanche 1500LT2005,2006,2006
    ChevroletAvalanche 1500North Face2002,2003
    ChevroletAvalanche 1500On Road Edition2002,2003
    ChevroletAvalanche 1500WBH2003
    ChevroletAvalanche 1500Z662004,2005,2006
    ChevroletAvalanche 1500Z712002,2003,2004,2005,2006
    GMCC15 SuburbanBase1975,1976,1977,1978
    GMCC15 SuburbanHigh Sierra1975,1976,1977,1978
    GMCC15 SuburbanSierra Classic1975,1976
    GMCC15 SuburbanSierra Grande1975,1976,1977,1978
    GMCC15/C1500 SuburbanBase1970,1971,1972,1973,1974
    GMCK15 SuburbanBase1975,1976,1977,1978
    GMCK15 SuburbanHigh Sierra1975,1976,1977,1978
    GMCK15 SuburbanSierra Classic1975,1976,1977,1978
    GMCK15 SuburbanSierra Grande1975,1976,1977,1978
    GMCK15/K1500 SuburbanBase1970,1971,1972,1973,1974

    Customer Reviews, Questions and Answers

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