Drivetrain Bellhousings and Components

UMI PERFORMANCE

UMI Performance 78-88 GM G-Body Modular Adjustable Transmission Crossmember - Red

$349.99

SKU: U01C 3108-R

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

Easy — 1–2 hours

Description

Part #: 3108-R

Transform your GM G-body with UMI's state-of-the-art modular crossmember system, designed to deliver precision, performance, and versatility. Engineered with a laser-cut tab and slot design, this innovative solution offers multiple mounting locations, enabling you to fine-tune your driveline angle effortlessly. Our brace designs provides plenty of space for large diameter dual exhausts, ensuring seamless installation and optimal functionality.

MIA's Description

The UMI Performance 3108-R is a modular and adjustable transmission crossmember designed for 1978-1988 GM G-Body vehicles. It is compatible with TKO, TKX, 200R4, 700R4, TH350, TH400, T56, 4L60, 4L65, 4L80, and 6L80 transmissions, featuring a laser-cut design, a 5-position CNC machined billet aluminum transmission mount, and a CNC machined billet aluminum spacer for 1978-1981 frames. Total brace weight is 22 lbs.

Fitment

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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.

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Specifications

BrandUMI PERFORMANCE
Part NumberU01C 3108-R

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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