Suspension and Components› Springs and Components

Integrated Engineering

Progressive Lowering Springs

$324.99

SKU: IESSCK2

In Stock
In Stock
Ships by Sep 13
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Integrated Engineering lowering springs are designed to improve the stance and handling of your Audi B9/B9.5 A4 or S4. These springs are made from High-Tensile Chrome Silicon Spring Steel and feature a progressive rate design.

They offer a calibrated sport drop with specific measurements for the A4 S-Line, A4, and S4 models. The spring rates are 558 lbf/in in the front and 515 lbf/in in the rear.
Show original supplier description
The Integrated Engineering lowering springs are meticulously engineered to correct the factory 'lifted' look of your Audi B9/B9.5 A4 or S4, providing a flush and aggressive fender-to-tire fitment. The design eliminates factory reverse rake while maintaining functional clearance for everyday driving. Constructed from High-Tensile Chrome Silicon Spring Steel, these springs utilize a progressive rate design that remains compliant over road imperfections before stiffening under load, ensuring confident body control without harshness. These performance springs feature carefully tuned rates to keep the chassis flat through high-G corners, enhancing grip and reducing body roll. By rebalancing the front-to-rear spring rates, turn-in is sharpened, understeer is reduced, and squat and dive are minimized. The specific drop varies by model: A4 S-Line receives approximately a ½ Inch front and 1 ¼ Inch rear drop, A4 models get a 1 ⅛ Inch front and 1 ¼ Inch rear drop, and S4 models feature a 1 ⅛ Inch front and ⅞ Rear drop. The spring rates are 558 lbf/in for the front and 515 lbf/in for the rear. These lowering springs are compatible with the following Audi models: 2017-2020 A4 2.0T FWD, 2017-2025 A4 2.0T AWD, and 2018-2025 S4 3.0T AWD.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandIntegrated Engineering
Part NumberIESSCK2
CategorySuspension and Components

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Returns & Fitment

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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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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