- Description
- Fitment
- Refund Policy
The 034Motorsport Density Line Control Arm Kit for Audi C8 models replaces worn factory suspension components with performance-engineered upper and lower control arms, sway bar end links, and new ball joints, restoring precision and confidence behind the wheel. Featuring high-durometer rubber bushings throughout, these kits deliver sharper steering response, improved handling feel, and long-term durability without sacrificing daily drivability.
Installation Effort: MEDIUM
NVH Levels: None-Low

Product Description:
Restore factory handling while elevating steering precision and driver confidence with the 034Motorsport Density Line Control Arm Kit for Audi C8 models. Designed as a comprehensive solution for worn or aging suspension components, this kit replaces the factory upper and lower control arms, front sway bar end links, and ball joints with performance-engineered Density Line components that deliver sharper response and improved chassis stability without sacrificing comfort.
Factory C8 suspension bushings are designed with comfort as the primary objective, utilizing soft rubber compounds and fluid-filled lower control arm bushings that deteriorate over time and can leak under repeated load and heat cycles. 034Motorsport Density Line Control Arms eliminate these compromises with higher-durometer rubber bushings that provide more precise suspension articulation and improved steering feel while maintaining excellent street manners for daily-driven luxury and performance applications alike.
Whether you drive an Audi A6, Allroad, A7, S6, S7, RS6, or RS7, this complete front suspension refresh kit is engineered to restore tight, predictable handling and reduce unwanted front-end movement during spirited driving, highway cruising, or aggressive cornering.
The included Density Line Lower Control Arms feature durable 65-durometer rubber bushings and new ball joints to improve front-end stability and steering accuracy while eliminating the failure-prone fluid-filled factory bushings. Density Line Upper Control Arms utilize stiffer 70-durometer rubber bushings to further sharpen steering response and suspension consistency under load. Complementing the system are Density Line Front Sway Bar End Links, which reduce flex and improve sway bar effectiveness for more direct turn-in and improved handling feel.
Each component is engineered as a direct, drop-in replacement and includes the necessary installation hardware for straightforward installation and long-term reliability.
Lower Control Arm Features:
- Complete, Drop-In Replacement for Factory Lower Control Arms
- Offers Improved Handling Feel & Steering Precision
- High-Durometer Rubber Bushings (65 Durometer)
- No Fluid, So Unlike OE Arms, the Bushings Cannot Leak
- Includes New Ball Joints
Upper Control Arm Features:
- Complete, Drop-In Replacement for Factory Upper Control Arms
- Offers Improved Handling Feel & Steering Precision
- High-Durometer Rubber Bushings (70 Durometer)
- Includes New Hardware
Density Line Sway Bar End Link Features:
- Complete, Drop-In Replacement for Factory Sway Bar End Links
- Offers Improved Handling Feel & Steering Precision
- High-Durometer Rubber Bushings
- Includes New Hardware
Part Number Interchange:
- 4K0 407 151 C, Control Arm, Lower Front Left
- 4K0 407 152 C, Control Arm, Lower Front Right
- 80A 407 693 E, Control Arm, Lower Rear Left
- 80A 407 694 E, Control Arm, Lower Rear Right
- 4M0 407 505 B, Upper Front Left
- 4M0 407 506 B, Upper Front Right
- 4M0 407 509 B, Upper Rear Left
- 4M0 407 510 B, Upper Rear Right
- 80A 407 689 C, Ball Joint
- 4M0 411 317 J, End Link
- 4M0 411 317, End Link
- 4M0 411 317 L, End Link (Supersession)
What's Included:
- Front Lower Control Arms - Front (Left & Right)
- Front Lower Control Arms - Rear (Left & Right)
- Ball Joints (Pair)
- Front Upper Control Arms - Front (Left & Right)
- Front Upper Control Arms - Rear (Left & Right)
- 2x Density End Links
- New Installation Hardware
Returns
Our policy lasts 14 days. If 14 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange. All items are subject to 15% restocking fee from the manufacturer.
To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.
Additional non-returnable items:
Gift cards
Downloadable software products
To complete your return, we require a receipt or proof of purchase.
Please do not send your purchase back to the manufacturer.
There are certain situations where only partial refunds are granted (if applicable)
You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of shipping to you will be deducted from your refund. If your original order qualified for free shipping, the actual cost of shipping the item to you will still be deducted from your refund.
If you would like to start a return please click here
Refunds (if applicable)
Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.
If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days.
You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of shipping to you will be deducted from your refund. If your original order qualified for free shipping, the actual cost of shipping the item to you will still be deducted from your refund.
Late or missing refunds (if applicable)
If you haven’t received a refund yet, first check your bank account again. Then contact your credit card company, it may take some time before your refund is officially posted. Next contact your bank. There is often some processing time before a refund is posted. If you’ve done all of this and you still have not received your refund yet, please contact us at info@amtuning.ca.
Sale items (if applicable)
Only regular priced items may be refunded, unfortunately sale items cannot be refunded.
Exchanges (if applicable)
To start an exchange, click here
Non-refundable items
The following items are non-refundable and non-returnable once purchased: oils, fuel or oil additives, filters, tuning cables, OBDeleven products, Braum seats, spark plugs, coil packs, and similar consumable, wheel spacers, wheels bolts, license plate brackets, electronic tuning components and any other product subject to discretion of AM Tuning Canada.
Other products from brands such as MHD, Bootmod3, Ecutek, Braum racing, Novitec are also non-refundable and non-returnable.
All sales of these items are final and are subject to the policies and discretion of AM Tuning. By completing a purchase, the customer acknowledges and agrees to these terms.
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