SKU: 81260323642

Billet Aluminum Rear Differential Mount Insert Kit, B9/B9.5 Audi A4/A5/S4/S5/RS5 & Allroad

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Description

Billet Aluminum Rear Differential Mount Insert Kit, B9/B9.5 Audi A4/A5/S4/S5/RS5 & Allroad034Motorsport is pleased to present Billet Aluminum Rear Differential Mount Inserts for the B9 Audi A4 S4 & Allroad! The B9 Audi A4 S4 & Allroad uses rubber rear differential mounts which deflect under load, causing the rear end to feel vague and loose, as well as leading to less than optimal handling characteristics during on throttle and off throttle transitions. These precision machined billet aluminum inserts are designed to fill voids in the

034Motorsport is pleased to present Billet Aluminum Rear Differential Mount Inserts for the B9 Audi A4/S4 & Allroad!

The B9 Audi A4/S4 & Allroad uses rubber rear differential mounts which deflect under load, causing the rear end to feel vague and loose, as well as leading to less-than-optimal handling characteristics during on-throttle and off-throttle transitions. These precision-machined billet aluminum inserts are designed to fill voids in the factory rear differential mounts, and limit differential movement under load without sacrificing ride quality or introducing any perceivable additional noise, vibration, or harshness into the cabin. The result is a more refined, connected driving experience.

Designed to work in conjunction with the factory rubber mounts, this insert package was engineered using CAD software and thoroughly tested and refined to provide a significant improvement in handling performance and feel.

These inserts were tested extensively on 034Motorsport's in-house B9 Audi A4 Development Vehicle Installation is very simple and is completely reversible.

 

Features:
  • T6-6061 Billet Aluminum Construction
  • CNC-Machined In-House
  • Clear Anodized Finish for Durability
  • Engineered to Fill Voids In Factory Rear Differential Mounts
  • Reduces Rear Differential Movement During Launches & Acceleration
  • Improves Shifting Feel, Resulting in Crisper Shifts
  • Virtually No Additional NVH Transfer Inside Cabin
  • Easy, Straightforward Installation
What's Included:
  • 034Motorsport Billet Aluminum B9 Audi Rear Differential Mount Insert - Rear (2)
  • 034Motorsport Billet Aluminum B9 Audi Rear Differential Mount Insert - Front (1)
Installation Instructions:
Fitment:
  • 2017 - Present Audi A4 (B9/B9.5)
  • 2018 - Present Audi A5 (B9/B9.5)
  • 2018 - Present Audi S4 (B9/B9.5)
  • 2017 - Present Audi S5 (B9/B9.5)
  • 2018 - Present Audi RS5 (B9/B9.5)
  • 2017 - Present Audi Allroad (B9/B9.5)

    Founded in 2005, 034 Motorsport is driven by the passion to bring motorsport-quality performance products and tuning to your Audi and Volkswagen vehicles.

    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: 81260323642

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    4.5 ★★★★★
    Based on 11 reviews
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    M
    Verified Purchase
    Michael Arnhold
    Whiting, US
    ★★★★★ 5
    Very comfortable Slippers. Great buy!
    Size: 12-13 Women/10.5-11.5 Men, Color: Charcoal
    I bought these to replace a pair of slippers that I have had for years that are very similar to the slippers I bought, but I had worn a hole in the leather on mine, so I had to find something new and similar. These slippers are worth the money they are very comfortable, and I am sure they will last for years. They are a little tight around the ankle cuff but they are still new and I am sure they will wear in a little more when I start wearing them more.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on March 8, 2025
    J
    Verified Purchase
    Jenn
    Carnegie, US
    ★★★★★ 3
    Great slippers but disappointing quality.
    Size: 7.5-8.5 Women/6-7 Men, Color: Ash, Size: 7.5-8.5 Women/6-7 Men, Color: Ash
    Extremely comfortable, attractive slippers but the stitching came loose on both leather trim areas almost immediately. I tried to sew/glue down the stitching (as seen in photo) but it kept unraveling. Disappointing as these slippers are great in every other way (though they do run a bit big...I wear a 9 but ended up with a 7.5-8.5 which fits with a bit of room to spare even with thick socks). I just hope they hold up after my latest attempt to stop the thread from pulling out any more as I do really love wearing them. Perhaps I just got a bum pair?
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on April 3, 2024
    M
    Verified Purchase
    Masselyn
    Draper, US
    ★★★★★ 5
    Tight at first, but they stretch after a short time...feel perfect after the first week!
    Size: 9.5-10.5, Color: Charcoal Faux Fur
    I love them! My first impression was "oooh, this is too tight". I wear a size 10 shoe and honestly, the 9.5-10.5 felt tight when I first tried it. Without socks it felt okay, with socks my toes were right at the top. But I loved the style so much I decided to give it a chance - I am SO glad I did!!! They do stretch and give, so don't expect it to be tight forever. I have had them a week or so, wearing each day (I WFH) and they feel really nice. I also live in the mountains, we just had our first winter storm, and these slippers are nice and toasty. Exactly what I needed. The memory foam is plush, though I have had other slippers with it and I know it will squash down over time. Right now, it is a nice feeling as I walk around the house. They are super cute looking, wearing leggings allows me to feel like I am stylish even while still wearing my sleep thermals. YAY!
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on November 18, 2025
    A
    Verified Purchase
    Alyene
    Phoenix, US
    ★★★★★ 5
    favorite slipper ever
    Size: 8-9, Color: Charcoal Faux Fur
    I love these slippers. They look great with pants tucked in. Incredibly warm and comfortable. I wear them almost every day. Fit is true to size. They stay up but are not tight at all. On top of that I get compliments on them. Highly recommend.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on May 3, 2026
    C
    Verified Purchase
    Customer Review
    Dallas, US
    ★★★★★ 5
    Favorite Slippers Of All Time
    Size: 6.5-7.5, Color: Charcoal Faux Fur
    ETA 7/2024: So I ended up buying a size 5-6. They fit better around the top and sides of my foot but the sole is a bit small. The 6.5-7.5 sole fits better but the material around the top and sides is roomy so it bunches up. Sigh. I still love these slippers but the fit is frustrating. I'm obsessed with these slipper boots! They are so cute and comfy. They look especially good with leggings but I also like that I can tuck other types of pajama pants into them. I'm short and have to fold the waist of most pajama pants so they're not super long on me, but with these boot slippers on I don't have to worry about my pant bottoms dragging on the floor since I can just tuck them in. I like that they have rubber soles. I love the look of the faux fur but not sure how easy they will be to wash because of it. I wear a 7 or 7.5 and I got the 6.5-7.5 size. Even with thick socks on they are roomy. Because they are house shoes it doesn't matter much but I probably could've sized down. I like the way they look so much I might buy a size down and use that pair for wearing outside of my house. Some other reviews said they have a strong smell but mine did not.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on January 1, 2024

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