Suspension and Components› Suspension Kits

ProComp

Pro Comp Bx 4 6In 00-13 Gm1500 4Wd

$258.64

SKU: P020 51021B-4

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Special Order
Ships in 4–6 weeks
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Pro Comp Suspension 51021B-4 is a suspension component box designed for 6-inch lift applications. It is Box 4 of a larger kit and is intended for use with part numbers K1083B, K1142B, and K5072B. This hardware kit is compatible with 2000-2013 GM 1500 4WD vehicles.

Fitment

Fitment Guaranteed

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandProComp
Part NumberP020 51021B-4

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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