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UMI Performance

UMI Performance 64-72 GM A-Body 78-88 G-Body 1in Lowering Spring Rear

UMI Performance 64-72 GM A-Body 78-88 G-Body 1in Lowering Spring Rear

Regular price $189.99
Regular price Sale price $189.99
Sale Sold out
  Lease to own   Pay as low as   $/week

SKU:UMI4050R

Fitments

Product Information
A spring is a spring right? Wrong! When UMI chose to manufacture our own line of springs we went all out. Designed in conjunction with a leading Sprint Cup chassis engineer, these springs are the best in the business. These springs are wound from 9254 CrSi premium wire and feature a linear 130 lb/in rate. The linear rate provides consistent handling characteristics which are important for Auto-x and Pro-Tour applications while the increase in stiffness reduces body roll and prevents the “floating” feeling so common with the A-body. These springs are suitable for Auto-x and Pro-Tour applications as well as corner carving/cruising. They have a tough black powder coat finish and UMI proudly manufactures these premium quality springs in the USA. As an industry leader in the muscle car suspension industry, UMI is proud to bring you the best spring in the business. Consistent rates and only the best materials (premium Chrome Silicon wire) ensure your car sits properly for years to come. Linear spring rates (530 lb/in front, 130 lb/in rear) provides a firm yet comfortable ride and incredible handling. No more floating feeling. Suitable for Pro-Tour, Auto-x and general cruising.

This Part Fits:

Year Make Model Submodel
1967 Buick Gran Sport Base
1978-1987 Buick Regal Base
1988 Buick Regal Custom
1982-1983 Buick Regal Estate Wagon
1987 Buick Regal GNX
1984-1987 Buick Regal Grand National
1978-1988 Buick Regal Limited
1982 Buick Regal Limited Turbo
1978-1982 Buick Regal Sport
1983-1986 Buick Regal T-Type
1970,1972 Buick Skylark 350
1967-1972 Buick Skylark Base
1968-1972 Buick Skylark Custom
1967-1968 Chevrolet Chevelle 300
1967-1969 Chevrolet Chevelle 300 Deluxe
1970-1972 Chevrolet Chevelle Base
1967-1972 Chevrolet Chevelle Concours
1969-1972 Chevrolet Chevelle Concours Estate
1969-1972 Chevrolet Chevelle Greenbrier
1967-1972 Chevrolet Chevelle Malibu
1968-1972 Chevrolet Chevelle Nomad
1968 Chevrolet Chevelle Nomad Custom
1971-1972 Chevrolet Chevelle SS
1967-1970 Chevrolet Chevelle SS 396
1967-1972,1978-1987 Chevrolet El Camino Base
1978,1981-1986 Chevrolet El Camino Conquista
1968-1972 Chevrolet El Camino Custom
1979-1981 Chevrolet El Camino Royal Knight
1968-1972,1978-1987 Chevrolet El Camino SS
1978-1981 Chevrolet Malibu Base
1978-1983 Chevrolet Malibu Classic
1978-1980 Chevrolet Malibu Classic Estate
1978-1981 Chevrolet Malibu Classic Landau
1979-1980 Chevrolet Malibu Classic Sport
1979-1980 Chevrolet Malibu Estate
1979 Chevrolet Malibu Landau
1979 Chevrolet Malibu Police
1979-1980 Chevrolet Malibu Sport
1970-1972,1979,1981-1988 Chevrolet Monte Carlo Base
1983 Chevrolet Monte Carlo CL
1978-1981 Chevrolet Monte Carlo Landau
1986-1988 Chevrolet Monte Carlo LS
1978,1980 Chevrolet Monte Carlo Sport
1983-1988 Chevrolet Monte Carlo SS
1967-1971 Oldsmobile 442 Base
1967-1972,1980 Oldsmobile Cutlass Base
1980-1981 Oldsmobile Cutlass Brougham
1972 Oldsmobile Cutlass Cruiser
1967 Oldsmobile Cutlass Holiday
1980-1981 Oldsmobile Cutlass LS
1968,1971-1972 Oldsmobile Cutlass S
1967 Oldsmobile Cutlass Turnpike Cruiser
1978-1979 Oldsmobile Cutlass Vista Cruiser
1979 Oldsmobile Cutlass Vista Cruiser Brougham
1967-1972 Oldsmobile F85 Base
1967-1972,1978-1988 Pontiac Grand Prix Base
1981-1987 Pontiac Grand Prix Brougham
1984-1988 Pontiac Grand Prix LE
1978-1983 Pontiac Grand Prix LJ
1988 Pontiac Grand Prix SE
1978-1980 Pontiac Grand Prix SJ
1967-1972 Pontiac GTO Base
1970-1971 Pontiac GTO The Judge
1978-1981 Pontiac LeMans Base
1978-1981 Pontiac LeMans Safari
1967-1970 Pontiac Tempest Base
1967-1969 Pontiac Tempest Custom
1970 Pontiac Tempest GT
1967-1969 Pontiac Tempest Safari

Shipping & Return Policy

 

Shipping:

Throwdown Performance ships via multiple carriers including UPS, USPS, FedEx, DHL among others.  We cannot guarantee the shipping carrier used in the transit of your order but do try to ship in the most cost effective and quick way to you!  

Orders are processed within 1-2 business days of order receipt depending on availability of the product purchased.  In some cases an item may be in transit to us or needs to be ordered in from a manufacturer that will not direct a product to you directly.  Other orders will ship direct from manufacturer, primarily on larger items (e.g. hoods, trunks) or items that need to be custom built (custom build coilovers, custom brake lines).  Please do not hesitate to contact us regarding any questions on product availability of items both listed or not listed on our website.

Depending on location, shipping generally takes 1-5 business days within the continental US and 3-10 business days in North America.  Items shipped international can vary with updated estimated timelines by shipping carriers heavily dependent on inbound/outbound customs of respective country.  Transit times will vary dependent on the size and weight of product and method of shipment chosen at checkout.  You will be notified if the shipping time frame is longer than expected due to product availability.  Please inspect all shipments immediately upon receipt.  Due to carrier guidelines we cannot accept any damage claims more than 7 days after receipt.

Some items may not qualify for free shipping promotion.  We will contact you after your order with a shipping quote should you wish to proceed with your order.  This often includes oversized items such as body parts (hoods, trunks, body kits), roll cages, etc.  Throwdown Performance collects and remits sales tax in which states it triggers nexus.  Sales tax may still be due in your state and is part of the end consumer to ensure proper payment (typically as part of your tax return declaration on out of state purchases) depending on your state.  International shipments may similarly have additional tariffs, taxes or duties due on receipt.  As we cannot estimate your tax situation, please contact your local shipping carrier or government for guidance.  Taxes, duties, tariffs are all the responsibility of the customer unless otherwise noted.

Returns:

Returns only accepted with written approval and RMA number from Throwdown Performance within 14 days of receipt.  Items must be returned in new, resellable condition.  Most returns are subject to a 15-25% restocking fee that cannot be waived, and is subject to change depending on manufacturer.  Many items, not limited to the list below are not eligible to be returned including:  Special order items included wheels, chassis bracing, electronics, custom built items, clearance or open items, body parts, oil and aerosols, used or items missing pieces, and other custom ordered or imported items cannot be returned.  Actual shipping fees paid both to you and back to Throwdown Performance or manufacturer will not be returned.  In cases of free shipping promotion, actual shipping fees will still be assessed on shipment.


 

Cancellations:

Cancellation requests can be sent to us via email and cannot be guaranteed until an item is fully refunded and confirmed.  Due to multiple distributors, please do not consider any order cancelled until fully refunded to your account (this includes any customer or Throwdown asks or requests to cancel an order).  We attempt to get all items to our customers as quickly as possible and ETA's may change without notice and most items will not be able to be cancelled post being processed.  Many items including those custom ordered are not eligible for cancellation.  All cancellations are subject to a cancellation fee of 10% of the total order value.

For any questions regarding our shipping, return or cancellation policies, please do not hesitate to contact us directly.

Condition of Use

Price Match Policy
ThrowDown Performance makes every effort to offer our customers the lowest prices possible. We will match any current advertised price on an in stock item in a magazine that ThrowDown Performance advertises [when possible]. Part numbers must match and be from the same manufacturer, and the part must be a regularly stocked part. Special orders [items not in stock] are NOT eligible for Price Match. Websites other than E-Bay [or any auction website] are also eligible for Price Match [when possible]. Advertised price must be from a Manufacture Authorized Dealer in order to qualify for Price Match. 

Errors on Our Site
Prices and availability of products and services are subject to change without notice. Errors will be corrected where discovered, and ThrowDown Performance reserves the right to revoke any stated offer and to correct any errors, inaccuracies or omissions including after an order has been submitted and whether or not the order has been confirmed and your credit card charged. If your credit card has already been charged for the purchase and your order is cancelled, ThrowDown Performance will issue a credit to your credit card account in the amount of the charge. Individual bank policies will dictate when this amount is credited to your account. If you are not fully satisfied with your purchase, you may return it in accordance with the Herbert Performance Return Policy. 

Special Order Policy
Items back-ordered [an item not in stock but will be in stock at a future date] or drop-shipped [an item not in stock but shipped from the manufacture] are considered Special Orders, as are all custom orders. A custom order includes but is not limited to axles, pistons, or any item that is a non-stocking item. Special orders are NON-returnable. 

International Orders
All orders shipping to Canada do not include Free Shipping. All duty, insurance and shipping charges are the responsibility of the customer. 

Conditions of Use
By accessing this web site, you agree to be bound by the terms and conditions of use set by ThrowDown Performance Parts. Use of this site is conditioned on your acceptance. The materials on this web site are Copyright © 2010 ThrowDown Performance, LLC. All rights reserved. Prices may change without notice. We make every effort to present accurate information, however errors in the description, photography, or typographical errors are subject to correction at the sole discretion of ThrowDown Performance. Nothing on this web site either written or implied will be construed as conferring any license of ThrowDown Performance's rights or any third party rights. While this web site is available freely to anyone, we reserve the copyright on any of the text and graphic images on the site. Distribution, reuse, or modifying any of the text of graphics that appears on the site is expressly forbidden without the prior written consent of ThrowDown Performance, LLC. This site may contain content not generated by ThrowDown Performance. ThrowDown Performance is not responsible any third party content. This site is owned and operated by ThrowDown Performance, LLC. The material provided on this web site is protected by law, including, but not limited to, United States copyright law, trademark law, and international treaties.
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