Description

Trailing Arm – Boxed – Lower – Polyurethane Bushings – Steel – Black Powder Coat – GM B-Body 1978-96 – Pair

Why Choose Us?



Frequently Asked Questions​

As an Authorized Automotive Retailer in the United States, we take pride in guaranteeing 100% authentic products from all brands available on our website. With partnerships spanning 1,000+ brands and a network of 20+ distributor warehouses nationwide, we maintain millions of auto parts in inventory across the USA, ensuring quick shipping and reliable service to our customers. When you shop with us, you're investing in quality and trust.
We believe we have the fastest backorder system in the U.S. auto parts industry, thanks to our strong partnerships with brands and vendors. Nearly all backordered auto parts are shipped directly by the vendors without any additional delays, or they are placed as special orders on the same day. In most cases, backordered parts are delivered within 5-10 days.
We offer unbeatable prices and the best shipping rates on auto parts, with exclusive protection and insurance included to safeguard your order from damage or loss. Enjoy convenient door-to-door delivery, real-time tracking, and our 100% satisfaction guarantee for a smooth, worry-free experience.
Our standard shipping typically takes 1-3 business days. We will provide estimated shipping time for each product. While we aim to deliver as quickly as possible, this timeframe ensures all orders are processed, prepared, and dispatched with care. If the products are not ready for shipping in 72 hours, we will refund you 100%
Absolutely. Once your order is dispatched, you’ll receive an email with tracking details, so you can follow your shipment every step of the way. Every step of shipping process will be sent through email notifications or using tracking page.
Every product page includes a stock level indicator to show what’s available. We always update the inventory 24/24. We’ll be happy to check availability and provide updates on new stock arrivals if you need a help.
We’re sorry to hear that your order wasn’t delivered in perfect condition. Please email us with your order number, a description of the issue, and photographs of the damaged item. Once we receive this information, we’ll arrange for a replacement or refund and handle the return process.
You can return items within 30 days of receipt. Ensure the product is new in its original packaging and securely wrapped for safe transit. Once we receive the item in sellable condition, we’ll issue a full refund for the product value. Contact us for the return address and further instructions.

About UMI PERFORMANCE

UMI Performance was founded in 2002 as a father/son business developing performance parts for GM and Ford products. They quickly began to focus on suspension upgrades for both older and late model muscle cars, and have become a leader in replacement and high-performance suspension components, from individual parts to entire kits.

International Shipping

Below are estimated rates and delivery times for popular destinations; full carrier options are available at checkout.

Our dedicated team has years of experience managing international logistics and customs documentation to ensure smooth delivery from our US warehouse to your door. Please review our shipping policy and local import regulations before ordering.

Loading international estimates...

Reviews

There are no reviews yet.

Be the first to review “UMI PERFORMANCE Rear Control Arm 3621-B”

Your email address will not be published. Required fields are marked *

Recently viewed products

  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    MSD IGNITION Wire Harness 6A & 6AL Ignition Boxes 8897

    SKU: MSD8897
    Product information
    • Weight0.73 lbs
    • Dimensions6.7 × 6.55 × 3.25 in
    • Quantity

      Each

    • Harness End 1

      MSD Digital 6A / 6A-L Ignition

    • Harness End 2

      Wire Ends

    • Harness Purpose

      Replacement Harness

    • Loom / Sleeve Included

      Yes

    Details...
    Original price was: $38.00.Current price is: $33.73.Add to cart
    Original price was: $38.00.Current price is: $33.73.Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    SEALED POWER Moly Piston Ring Set E296K

    SKU: SEAE296K
    Product information
    • Weight1.2 lbs
    • Dimensions5 × 5 × 3.25 in
    • Product Line

      Performance

    • Bore (Standard)

      4.360 in

    • Bore (Metric)

      110.744 mm

    • Tension

      Standard

    • Top Ring Included

      Yes

    Details...
    Original price was: $67.99.Current price is: $61.81.Add to cart
    Original price was: $67.99.Current price is: $61.81.
    Quantity Only 6 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    SKYJACKER Hydro Shock w/Red Boot H7074

    SKU: SKYH7074
    Product information
    • Weight5.42 lbs
    • Dimensions24.8 × 3.3 × 3.25 in
    • Product Line

      Hydro H7000 Series

    • Internal Design

      Twintube

    • Gas/Hydraulic

      Hydraulic

    • Compressed Length

      13.47 in

    • Extended Length

      22.25 in

    Details...
    Original price was: $58.00.Current price is: $51.87.Add to cart
    Original price was: $58.00.Current price is: $51.87.
    Quantity Only 6 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    HALTECH Nexus R3 VCU HT-193000

    SKU: HTHHT-193000
    Product information
    • Weight3.753 lbs
    • Dimensions9 × 9 × 2.5 in
    • Product Line

      Nexus R3

    • Quantity

      Each

    • Map Sensor Included

      Yes

    • Self Tuning

      Yes

    • User Tunable

      Yes

    Details...
    Original price was: $2,758.85.Current price is: $2,399.00.Add to cart
    Original price was: $2,758.85.Current price is: $2,399.00.
    Quantity Only 2 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    HALTECH Haltech Stand Alone IC-7 Classic Dash Kit HT-067014

    SKU: HTHHT-067014
    Product information
    • Weight8.075 lbs
    • Dimensions14.65 × 14.3 × 12.9 in
    • Product Line

      iC-7 Classic

    • Quantity

      Kit

    • Fittings Included

      Yes

    • Universal Dash Kit Included

      Yes

    • Data Logger

      Yes

    Details...
    Original price was: $2,156.25.Current price is: $1,875.00.Add to cart
    Original price was: $2,156.25.Current price is: $1,875.00.Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    HUSKY LINERS Ventvisor Low Pro 2854106

    SKU: HSK2854106
    Product information
    • Weight3.3 lbs
    • Dimensions46.88 × 11.88 × 1.88 in
    • Product Line

      Low Profile Ventvisor

    • Application Specific

      Yes

    • Front Mounting Style

      Stick-On

    • Rear Mounting Style

      Stick-On

    • In Channel / Out Of Channel

      Out of Channel

    Details...
    Original price was: $99.00.Current price is: $89.99.Add to cart
    Original price was: $99.00.Current price is: $89.99.
    Quantity Only 1 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    HOLLEY Choke Cable 45-228

    SKU: HLY45-228
    Product information
    • Weight0.525 lbs
    • Dimensions11.05 × 7.4 × 1.95 in
    • Quantity

      Each

    • Component Type

      Choke Cable

    • Electric / Manual

      Manual

    • Material

      Steel

    • Color

      Zinc

    Details...
    Original price was: $41.00.Current price is: $36.54.Add to cart
    Original price was: $41.00.Current price is: $36.54.
    Quantity Only 5 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    WINTERS Quick Change Gears 4409

    SKU: WIN4409
    Product information
    • Weight3.6 lbs
    • Dimensions7.1 × 4.6 × 1.5 in
    • Spline

      6

    • Set Number

      9.0

    • Gear 1 Tooth Count

      16.0

    • Gear 2 Tooth Count

      23.0

    • 3:78 Ring And Pinion Low Ratio

      0.127083333

    Details...
    Original price was: $90.12.Current price is: $81.93.Add to cart
    Original price was: $90.12.Current price is: $81.93.
    Quantity Only 3 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    Wheel Front Aftermarket Shop
    Add to wishlist

    FACTOR 55 Flatlink Winch Shackle Mount Red 00050-01

    SKU: FTR00050-01
    Product information
    • Weight1.73 lbs
    • Dimensions6.85 × 4.35 × 2.3 in
    • Material

      Aluminum

    • Color

      Red

    • Quantity

      Each

    • Variant

      Yes

    • Product Line

      FlatLink

    Details...
    Original price was: $167.90.Current price is: $146.00.Add to cart
    Original price was: $167.90.Current price is: $146.00.
    Quantity Only 4 left in stock!
    -+
    Add to cart
    Add to wishlist
  • Add to wishlist
    Sale
    DEDENBEAR CO2 Regulator Kit AB10K
    Add to wishlist

    DEDENBEAR CO2 Regulator Kit AB10K

    SKU: DEDAB10K
    Product information
    • Weight6.45 lbs
    • Dimensions16 × 14.4 × 5.4 in
    • Material

      Aluminum

    • Color

      Natural

    • Finish

      Natural

    • Quantity

      Kit

    • Logo

      Yes

    Details...
    Original price was: $310.29.Current price is: $282.08.Add to cart
    Original price was: $310.29.Current price is: $282.08.
    Quantity Only 2 left in stock!
    -+
    Add to cart
    Add to wishlist

    49