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UMI PERFORMANCE

UMI Performance 78-88 GM G-Body Spring/Shock Lowering Kit 2in Rear 250lb

$1,349.99

SKU: U01C GBF250-2

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The UMI Performance GBF250-2 is a rear frame brace designed for 1978-1988 GM G-Body RWD vehicles. It is included in the UMI Stage 2 Handling Kit (MPN: GBF002) to enhance chassis rigidity and improve handling.
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Part #: GBF250-2

UMI's lowering package consists of four Viking double adjustable shocks, a hybrid front coil over spring system and either 1 or 2 inch lowering Hotchkis rear springs. With moderately increased spring rates for improved handling, this kit allows you to adjust your cars altitude and attitude for maximum performance and a cool appearance. The hybrid front coil system features 0-3" front drop and is easy to adjust and lock in place. The 1 or 2 inch rear lowering allows you to knock the factory height down a bit or go the extra inch for the Pro-Tour look. Double adjustable Viking shocks feature 19 compression and 19 rebound settings. These independently adjustable settings allow you to change from street to strip to corner carving handling simply by turning the knobs. No tools required.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandUMI PERFORMANCE
Part NumberU01C GBF250-2

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Returns & Fitment

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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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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