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Home Chassis & Suspension Suspension Components UMI Performance Competition Coilover Kits 20-850275T
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Superlift Suspension Lift Kits K860B
Superlift Suspension Lift Kits K860B $1,433.00

UMI Performance Competition Coilover Kits 20-850275T

$1,473.00

Coilover Kit, Competition, 1993-2002 GM F-Body, Front and Rear, Single Adjustable, Kit

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Description

Overview

Brand: UMI Performance
Manufacturer’s Part Number: 20-850275T
Part Type: Coilover Kits
Product Line: UMI Performance Competition Coilover Kits
Summit Racing Part Number: UPI-20-850275T
Coilover Kit Position: Front and rear
Adjustable Valving: No
Shocks Included: Yes
Internal Design: Monotube
Coilover Springs Included: Yes
Suspension Height Adjustment: 0.0-2.5 in. lowered
Gas Charged: Yes
Threaded Adjustment Range: 2.500 in.
Shock Body Material: Aluminum
Shock Body Finish: Black powdercoated
Spring Finish: Black
Crossmember Included: No
Adjustable Mounting Bracket Included: No
Hardware Included: Yes
Welding Required: No
Quantity: Sold as a kit.
Notes: For use with UMI or Strano 35mm/22mm sway bars. Includes 4 coilover shocks, 4 springs (850 lbs./in. front and 275 lbs./in. rear), fabricated bolt in mounting brackets and hardware, thrust bearings for each shock and a spanner wrench for height adjustments.

UMI Performance Competition Coilover Kits

UMI Performance Competition coilover kits are built and proven to perform. Developed in cooperation with Sam Strano, the 14-time national SCCA autocross champion, these packages feature an AFCO-built aluminum body, plus monotube dampers with Strano-tuned valving that offers race-winning performance, while still providing an awesome street ride. They are rebound-adjustable, with a 40-position digressive rebound curve designed for competition body and weight transfer control. UMI Competiton coilover kits are available in front, rear, or complete (front and rear) packages. The kits include coilover shocks, springs with proper rates, fabricated bolt-in mounting brackets, hardware, and thrust bearings for each shock.

UMI Performance Competition coilover kits feature:

* UMI/Strano specific competition valving
* Front upper fabricated shock mount removes rust-prone GM rubber shock mount
* Front shocks assembled with progressive rate bump stops
* Double bearing shocks for crisp response, zero deflection, and high reliability
* 125 psi monotube provides quick reaction and fade-free performance
* Medium-firm fixed compression
* Balanced for use with UMI or Strano 35mm/22mm sway bars
* Ride height adjustment range from stock to 2 1/2 in. lowering

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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