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Home Chassis & Suspension Chassis Components UMI Performance Tubular K-Members 240331-B
Engine Power Triple-Threat 1973 Camaro Engine Chassis and Brakes Combos SUM-CSUMEPTTC004
Engine Power Triple-Threat 1973 Camaro Engine Chassis and Brakes Combos SUM-CSUMEPTTC004 $4,095.00
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UMI Performance Tubular K-Members 240331-R
UMI Performance Tubular K-Members 240331-R $1,145.00

UMI Performance Tubular K-Members 240331-B

$1,100.00

K-Member and A-Arms, Tubular, Steel, Black Powdercoated, Chevrolet, Pontiac, SBC, Gen 1, LS, Kit

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Category: Chassis Components
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Description

Overview

Brand: UMI Performance
Manufacturer’s Part Number: 240331-B
Part Type: K-Members
Product Line: UMI Performance Tubular K-Members
Summit Racing Part Number: UPI-240331-B
K-Member Material: Steel
K-Member Color: Black
Control Arms Included: Yes
Coilover Springs Included: No
Motor Mounts Included: Yes
Steering Rack Included: No
Quantity: Sold as a kit.
Notes: Gen 1 SBC will fit k-member by not using the included LSX motor mount stands.

UMI Performance Tubular K-Members

UMI Performance tubular K-members instantly remove 25 lbs. from the front of your vehicle, while maintaining strength for streetability and daily use. UMI Performance tubular K-members have been designed to handle everything from drag racing to daily driving and even autocross. Their dual tube center section adds increased strength over the competitors’ designs, making them far superior and able to handle everyday stress and abuse. Additional front-end adjustment can also be achieved with these K-members. The lower A-arm slots feature a 1/2 in. adjustment built in and will work with the stock and any aftermarket A-arm setup. The front and rear A-arm slots also feature additional bracing to withstand hard side loads and extreme pressure. These tubular K-members also feature integrated motor mounts, eliminating the stock cast iron mounts for maximum weight savings.

Additional features include:

* Main center tube constructed from 1.500 in. x 0.120 in. seamless steel tubing
* Additional cross braces use 1.250 in. x 0.120 in. seamless steel tubing
* TIG and MIG-welded construction for superior strength
* Front and rear A-arm mounts CNC-machined and fabricated from 0.188 in. thick steel
* Rear A-arm mounts gusseted to withstand extreme side loads and pressure
* Dual tube center section adds increased strength over any competitor’s design
* All mounting plates are CNC-machined to ensure hole-to-hole accuracy
* Factory locator pins included for easy installation and exact fit
* Completely fixture-welded to ensure factory fitment with no grinding or cutting

Shipping & Delivery
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Effective Date: August 9, 2025

At X Factors Motorsports, we are committed to delivering your order quickly, securely, and affordably.


1. Processing Time

  • Orders are typically processed within 1–2 business days after payment is confirmed.

  • Orders placed on weekends or holidays will be processed on the next business day.


2. Delivery Times

  • Domestic Shipping (United States): Delivery takes 5–7 business days from the date of shipment.

  • International Shipping: Delivery times vary by destination and may take 7–21 business days depending on customs processing and local delivery services.


3. Shipping Rates

  • United States: Free standard shipping on all orders.

  • International: Shipping costs are calculated at checkout based on the delivery address, package weight, and destination country.


4. Carriers Used

We ship orders using trusted carriers such as UPS, FedEx, USPS, and DHL to ensure reliable delivery. Tracking numbers are provided for all shipments.

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    At X Factors Motorsports, we specialize in high-performance engines, outboards, and premium automotive equipment. With expert support, fast shipping, and trusted brands, we help builders, racers, and enthusiasts power their passion — one project at a time.

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