Pro Comp 58101 U-Bolt Kit

Pro Comp 58101 U-Bolt Kit
36.99In stock
  • Brand: Pro Comp
  • |
  • SKU: DFCW-58101
  • |
  • Part Number: 58101

1973-1987 Chevrolet Blazer 4WD Gas/1973-1976 Chevrolet K10/K1500 Pickup 4WD Gas/1973-1976 Chevrolet K20/K2500 Pickup 4WD Gas/1987-1991 Chevrolet Silverado 1500 2WD/4WD Gas/1987-1991 Chevrolet Silverado 2500 2WD/4WD Gas/Diesel/1973-1976 Chevrolet Suburban 1500 4WD Gas/1973-1976 Chevrolet Suburban 2500 4WD Gas/1973-1987 GMC Jimmy 4WD Gas/1973-1976 GMC K15/K1500 Pickup 4WD Gas/Diesel/1973-1976 GMC K25/K2500 Pickup 4WD Gas/Diesel/1987-1991 GMC Sierra 1500 2WD/4WD Gas/1987-1991 GMC Sierra 2500 2WD/4WD Gas/Diesel/1973-1976 GMC Suburban 1500 4WD Gas/1973-1976 GMC Suburban 2500 4WD Gas/1973-1976 Chevrolet/GMC Suburban 3500 4WD

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Product Details

Pro Comp U-bolt kits are pakaged complete with new hi-nuts and extra thick washers. U-bolt lengths are usually adequate for stock and aftermarket leaf spring packs. Pro Comp U-Bolt kits are manufactured from low-alloy high strength steel. Round style U-bolts are zinc plated. Square U-bolts are unplated in order to preserve the integrity of the steel at it's bent points. U-bolts are equivalent in strength to a Grade 5 bolt.

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1973-1976ChevroletK10/K1500 Pickup4WDGas
1973-1976GMCK15/K1500 Pickup4WDGas
1973-1976GMCK15/K1500 Pickup4WDDiesel
1973-1976ChevroletK20/K2500 Pickup4WDGas
1973-1976GMCK25/K2500 Pickup4WDGas
1973-1976GMCK25/K2500 Pickup4WDDiesel
1973-1976ChevroletSuburban 15004WDGas
1973-1976ChevroletSuburban 25004WDGas
1973-1976GMCSuburban 15004WDGas
1973-1976GMCSuburban 25004WDGas
1987-1991ChevroletSilverado 15002WDGas
1987-1991ChevroletSilverado 15004WDGas
1987-1991ChevroletSilverado 25002WDGas
1987-1991ChevroletSilverado 25002WDDiesel
1987-1991ChevroletSilverado 25004WDGas
1987-1991ChevroletSilverado 25004WDDiesel
1987-1991GMCSierra 15002WDGas
1987-1991GMCSierra 15004WDGas
1987-1991GMCSierra 25002WDGas
1987-1991GMCSierra 25002WDDiesel
1987-1991GMCSierra 25004WDGas
1987-1991GMCSierra 25004WDDiesel
1973-1976ChevroletSuburban 35004WD
1973-1976GMCSuburban 35004WD


  • U-Bolt Kit
  • 2.5"Front Lift
  • Incl. Hi-Nuts
  • Extra Thick Washers


211511Front Leaf Spring
113122Rear Add a Leaf Springs
158101Front Box Kit
158401Rear Blocks / U-Bolts
17215Stainless Brake Lines
1GM400Steering Arm
2324509Front ES3000 Shocks
2329500Rear ES3000 Shocks

Important Notes

  • Driveline modifications may be required due to increased driveline angles.
  • Exhaust modifications may be required for height increases of 4" and are normally required for 6" height increases.
  • All ride height increases are approximate and will vary due to vehicle specification (Engine size, factory options, trail equipment, etc).
  • Two additional front shocks must be ordered separately for vehicles equipped with factory dual shocks. (6) Replacement 4" and 6" rear leaf springs are available and sold separately.
  • Vehicle will require alignment after kit is installed.

Tire Info
Max Tire Size35" x 12.50"
Wheel Diameter15" +
Wheel Width8" - 10"
Backspace3.25" - 4.5"
Bolt Pattern6 x 5.5"
Bolt Code83
Lug Nut Size7/16"
Lug Nut KitN/A