SKU: 70264991666

034Motorsport Density Line Upper Control Arm Kit - Audi B9/B9.5 A4/S4/A5/S5/RS5 - 034-401-1072

Sale price$310.50 Regular price$345.00
Save 10%

Pay in installments of $86.25 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 3 - Aug 8

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

034Motorsport Density Line Upper Control Arm Kit - Audi B9/B9.5 A4/S4/A5/S5/RS5 - 034-401-1072034 Motorsport Density Line Upper Control Arm Kit Audi B9 B9. 5 A4 S4 A5 S5 RS5 034 401 1072. Replace your vehicle's aging, worn control arms with these performance engineered Density Line Upper Arms restore feel and improve handling precision beyond factory levels. Density Line (Non Adjustable): Direct replacement of the factory control arms, performance engineered with Density Line bushings to restore handling precision beyond factory levels.

034 Motorsport - Density Line Upper Control Arm Kit - Audi B9/B9.5 A4/S4/A5/S5/RS5 - 034-401-1072.

Replace your vehicle's aging, worn control arms with these performance-engineered Density Line Upper Arms restore feel and improve handling precision beyond factory levels. 

  • Density Line (Non-Adjustable): Direct replacement of the factory control arms, performance-engineered with Density Line bushings to restore handling precision beyond factory levels.

034Motorsport's Density Line Upper Control Arm Kits are available as Adjustable or Non-Adjustable Control Arms, and are designed to be performance replacements for all four of the factory front upper control arms. The result is tighter handling and more precise steering response than even brand new factory control arms can offer. In addition, adjustable upper control arms allow optimal alignment for your lowered or track driven vehicle.

The factory front control arms are an integral part of the suspension, but can start wearing out as early as 40,000 miles - especially on enthusiast-owned vehicles which are driven hard on the street or track. As the rubber bushings degrade and ball joints develop play, alignment is compromised and steering becomes less precise. This kit is a drop-in replacement with feature improvements over stock, that will tighten up front-end feel and allow camber adjustment to significantly improve handling.

DENSITY LINE NON-ADJUSTABLE CONTROL ARMS:

034Motorsport's complete Density Line Upper Control Arms are designed to be a performance replacement for all four factory front upper control arms. Featuring high-durometer rubber bushings and high-quality ball joints, Density Line Control Arms are engineered to limit unwanted deflection in the suspension, resulting in tighter handling and more precise steering response than even brand-new factory control arms can offer.

BENEFITS:

  • Complete, Drop-In Replacement for Factory Control Arms
  • Reduce Deflection to Maintain Suspension Geometry Under Load
  • Improve Handling Feel & Steering Precision

FEATURES:

  • CNC-Machined Billet Aluminum Arms for Strength
  • High-Durometer Rubber Bushings (65 Durometer)
  • Genuine Aurora Spherical Rod Ends Featuring Self-Lubricating Teflon Race Lining
  • Anodized Finish for Durability
  • Rebuildable Design

WHAT'S INCLUDED:

  • Adjustable Front Upper Control Arms - Front (Left & Right)
  • Adjustable Front Upper Control Arms - Rear (Left & Right)
  • Rubber Dust Boots (Set of 4)

DENSITY LINE NON-ADJUSTABLE:

  • Complete, Drop-In Replacement for Factory Upper Control Arms
  • Offers Improved Handling Feel & Steering Precision
  • High-Durometer Rubber Bushings (70 Durometer)
  • Includes New Hardware
  • Includes:
    • Front Upper Control Arms - Front (Left & Right)
    • Front Upper Control Arms - Rear (Left & Right)
    • Installation Hardware

OE PART INTERCHANGE:

Upper Arms:

  • 8W0407505C
  • 8W0407506C
  • 8W0407509B
  • 8W0407510B

INSTALLATION & WARRANTY:

Installation:

  • It is imperative that the suspension be compressed to static ride height before any suspension pivot bushings are tightened, as per the factory installation procedure. If this is not done, the bushings will tear prematurely as the twisting forces on them will be much higher than is intended. 034Motorsport's Limited Warranty on Density Line products does not cover premature failure due to improper installation or use.
  • We highly recommend professional installation for this product.

Warranty:

  • 1 Year Limited Replacement Warranty (If you encounter any issues with our products outside of the warranty period, we will work with you to provide a resolution.)

FITMENT:

Make Model Years Chassis Engine
Audi A4 2017-Present B9/B9.5 2.0 TFSI
Audi A5 2017-Present B9/B9.5 2.0 TFSI
Audi allroad 2017-Present B9/B9.5 2.0 TFSI
Audi RS5 2018-Present B9/B9.5 2.9 TFSI
Audi S4 2018-Present B9 3.0 TFSI
Audi S5 2018-Present B9/B9.5 3.0 TFSI

 
INSTALLATION:

The assembly of your Density Line Adjustable Upper Control Arm Kit, B9 Audi A4/S4, A5/S5/RS5, Allroad is a relatively simple process. You can access our detailed assembly guide by clicking the link below.

Download Density Line Adjustable Upper Control Arm Kit, B9 Audi A4/S4, A5/S5/RS5, Allroad Assembly Guide

 

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 70264991666

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.4 ★★★★★
Based on 10 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
M
Madelaine
Pawtucket, US
★★★★★ 5
Smart-Looking Pants That Fit Well
Color: Navy Blue, Size: 8
I had my son wear these for a church, and they looked sharp without being too stiff. The adjustable waist makes them comfortable, and the fabric feels durable enough to handle a few hours of running around. They held their shape well and didn’t wrinkle too easily. After a couple of wears, they still look crisp and clean. The overall fit and finish make them feel like a well-made pair of dress pants.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 2, 2026
M
Verified Purchase
Mema0818
Grantham, US
★★★★★ 5
Great Fit
Color: Royal Blue, Size: 10
Cute vest perfect for my 10 yr old
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
D
Delta End
Los Angeles, US
★★★★★ 5
Kids Formal Vest Review
Color: Royal Blue, Size: 12, Color: Royal Blue, Size: 12
At the time of review, the price was $17.09. It seems to be correctly priced for the value it provides. I found this vest to be versatile, suitable for a range of formal and semi-formal occasions, from weddings to school events, and capable of being dressed up or down. The fit generally seemed accurate or slightly generous, though it does come with the adjustable back strap offering some customization. The overall quality of the vest, including its construction and stitching, appeared to be good, with a durable and well-made feel. It presented a polished and sharp appearance that could elevate an outfit, and the color is very close to the product image. The material felt substantial and structured, yet breathable, often featuring a silky lining and a notable texture and seems to be machine washable. Based on the quality I've seen, I considered this vest to offer good value for its price point. The vest provides a functional option for children's formal wear. Its design and construction suggest practical utility for various events... or your kid can just wear it all the time like mine does.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 30, 2026
K
Kelli Lynn
West Palm Beach, US
★★★★★ 5
Great Boys Suit Vest
Color: Black, Size: 12, Color: Black, Size: 12
I recently had a chance to pick up this boy's suit vest for my upcoming wedding, and it is absolutely perfect. It fits my son so well, running very true to size. The material is so silky smooth and soft, he absolutely loves it. He's autistic and has a thing about different fabrics and this does not irritate or bother him at all. It is going to be perfect over his long sleeve button down shirt. The best looks amazing on him, and the black color is definitely a very dark true black. It is such a great value for the money, you will not be disappointed! I highly recommend picking this up if you need one for your boy or if you have a family member who needs one for an upcoming event.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 4, 2026
A
Arty
Waukegan, US
★★★★★ 4
Boys vest
Color: Black, Size: 8
The vest looks nice. It seems well made and looks high quality. The fabric is nice. The buttons seem very sturdy. The vest is lightweight and shouldn’t be too sweaty. It’s a nice versatile piece. Can be dressed up or down. The fit is a smidge awkward on my boys, but they still like it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 19, 2026

recommand products