SKU: 87434078980

034Motorsport Density Line Bump Stops, Front, 56mm - Audi B8/B9/C7/C8 - 034-403-Z001

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Description

034Motorsport Density Line Bump Stops, Front, 56mm - Audi B8/B9/C7/C8 - 034-403-Z001034 Motorsport Density Line Bump Stops, Front, 56mm Audi B8 B9 C7 C8 034 403 Z001. 034Motorsport Density Line Bump Stops are engineered to solve one of the biggest drawbacks of lowering a vehicle: reduced suspension travel. When travel disappears, so do handling precision, ride comfort, and the ability for the suspension to keep the tires planted. Density Line Bump Stops are specifically designed to restore this lost performance while adding tuned,

034 Motorsport - Density Line Bump Stops, Front, 56mm - Audi B8/B9/C7/C8 - 034-403-Z001.

034Motorsport Density Line Bump Stops are engineered to solve one of the biggest drawbacks of lowering a vehicle: reduced suspension travel. When travel disappears, so do handling precision, ride comfort, and the ability for the suspension to keep the tires planted. Density Line Bump Stops are specifically designed to restore this lost performance while adding tuned, progressive control that factory or cut bump stops simply cannot provide.

034Motorsport Density Line Bump Stops

Engineered Travel. Tuned Control. Superior Comfort:

034Motorsport Density Line Bump Stops are built to address one of the most common issues that comes with lowering a vehicle: the loss of usable suspension travel. When the suspension runs out of room to move, the car's ability to handle precisely, ride comfortably, and maintain consistent tire contact all start to suffer. These bump stops are specifically designed to restore that performance by providing additional, carefully tuned suspension support. Their progressive characteristics manage impact forces smoothly, offering control and protection that factory or trimmed bump stops simply cannot deliver. The result is a more composed, predictable, and confident driving experience, especially on lowered setups that demand proper suspension geometry and travel management.

Why Suspension Travel Matters:

Lowered vehicles lose valuable suspension travel, which causes the suspension to reach the factory bump stop much sooner than intended. A bump stop is designed by the OEM as a final-stage buffer, essentially a rubber cushion that protects the shock and suspension components from bottoming out during extreme compression. In a stock-height vehicle, it is meant to engage only during hard impacts and serves as a safety and comfort device rather than a primary spring.

When the vehicle is lowered, that engineered clearance is reduced or eliminated. As a result, the shock engages the OEM bump stop far more often and under lighter loads than originally intended. This turns the bump stop into an unintended secondary spring, which restricts suspension movement, reduces the suspension's ability to absorb bumps, and prevents the tire from maintaining a consistent load. The outcome is a noticeable loss of ride quality, grip, and handling precision.

Lowered on OEM Bump Stops

  • The suspension stops absorbing bumps
  • The tire loses consistent load and grip
  • Handling becomes unpredictable
  • Ride quality becomes harsh and abrupt

Factory bump stops were never engineered for lowered ride heights, and cutting them only amplifies harshness.

Lowered on Density Line Bump Stops

  • Restores usable shock travel on lowered vehicles
  • Keeps the suspension operating in its intended range
  • Improves chassis balance and stability
  • Enhances comfort by allowing the shock, not the bump stop, to manage impacts

Result: A poised, controlled suspension that maintains grip and comfort instead of bottoming out.

Precision€‘Tuned Compression Rate:

Factory bump stops are designed for stock ride heights and spring rates, which means they often fall short when a vehicle is lowered. 034Motorsport Density Line Bump Stops are specifically engineered for lowered setups, particularly those running Dynamic+ Lowering Springs. Each bump stop is carefully shaped, sized, and density€‘matched to provide a progressive compression profile that acts like a miniature spring and damper. This allows for smooth, comfortable early travel while increasing firmness as the suspension approaches full compression. The result is controlled body motion, predictable handling, and improved ride quality without harshness.

Platform€‘Specific Engineering

Every Density Line Bump Stop is designed to match its specific chassis, ensuring optimal suspension performance. By utilizing vehicle-specific shapes and lengths, these bump stops restore suspension geometry and travel to near-factory levels, even after lowering. Their compression rate and progression are tuned to complement Dynamic+ Lowering Springs, maintaining handling balance while providing consistent, predictable performance. The optimized length and compression characteristics ensure the bump stop works seamlessly with the rest of the suspension, completing a fully engineered performance package rather than serving as a generic replacement.

Why Not Just Cut the Factory Bump Stop?

Cutting factory bump stops might seem like an easy fix, and people have been doing it for years. But every shortcut has a cost. Trimming might buy you a little travel, but it ruins the last phase of the carefully tuned suspension travel that keeps your suspension controlled and your ride composed. The result? Harsh bottom-outs, unpredictable handling, and a setup that never feels quite right.

034Motorsport Density Line Bump Stops are the right way to do it. Designed from the ground up for lowered vehicles, they deliver the full range of motion your suspension deserves, with smooth, progressive control that cut OEM stops simply can't match. More travel, more precision, no compromises.

Cut Factory Bump Stops

  • Not engineered for lowered ride heights
  • Harsh, abrupt engagement
  • Minimal tuning for compression or damping
  • Reduced comfort and poor control

Density Line Bump Stops

  • Engineered compression profile
  • Progressive and smooth engagement
  • Increased usable travel and improved control
  • Maintains stability under load
  • Dramatically improved ride comfort
  • Ideal complement to Dynamic+ Lowering Springs

Features:

  • Designed for Lowered Vehicles
  • Improve Handling and Comfort
  • A Perfect Match for 034Motorsport Dynamic+ Lowering Springs
  • Made from OEM Quality PUR (Polyurethane) Material
  • Reduced Height Helps to Maintain Full Suspension Movement on Lowered Vehicles:
    • OE Height: 72mm
    • 034 Height: 56mm
  • Increased Durometer Over OE for More Effective Compression Limiting Without Becoming Overly Harsh:
    • OE: 50A
    • 034: 55A

Part Number Interchange:

  • 8K0 412 131 F

What's Included:

  • 1 Pair - 034Motorsport Bump Stops

Fitment:

Make Model Years Chassis Engine
Audi A4 2009-2016 B8/B8.5 2.0 TFSI
Audi A4 2009-2016 B8/B8.5 3.2 FSI
Audi A4 2017-Present B9/B9.5 2.0 TFSI
Audi A5 2008-2017 B8/B8.5 2.0 TFSI
Audi A5 2008-2017 B8/B8.5 3.2 FSI
Audi A5 2018-Present B9/B9.5 2.0 TFSI
Audi A6 2012-2018 C7/C7.5 2.0 TFSI
Audi A6 2012-2018 C7/C7.5 3.0 TDI
Audi A6 2012-2018 C7/C7.5 3.0 TFSI
Audi A6 2019-Present C8 2.0 TFSI
Audi A6 2019-Present C8 3.0 TFSI
Audi A7 2012-2018 C7/C7.5 2.0 TFSI
Audi A7 2012-2018 C7/C7.5 3.0 TDI
Audi A7 2012-2018 C7/C7.5 3.0 TFSI
Audi A7 2019-Present C8 2.0 TFSI
Audi A7 2019-Present C8 3.0 TFSI
Audi Allroad 2010-2016 B8/B8.5 2.0 TFSI
Audi Allroad 2017-Present B9/B9.5 2.0 TFSI
Audi Allroad 2019-Present C8 3.0 TFSI
Audi RS4 2010-2017 B8/B8.5 4.2 FSI
Audi RS4 2018-Present B9/B9.5 2.9 TFSI
Audi RS5 2010-2017 B8/B8.5 4.2 FSI
Audi RS5 2018-Present B9/B9.5 2.9 TFSI
Audi RS6 2012-2018 C7/C7.5 4.0 TFSI
Audi RS6 2020-Present C8 4.0 TFSI
Audi RS7 2012-2018 C7/C7.5 4.0 TFSI
Audi RS7 2019-Present C8 4.0 TFSI
Audi S4 2010-2017 B8/B8.5 3.0 TFSI
Audi S4 2018-Present B9/B9.5 3.0 TFSI
Audi S5 2008-2012 B8 4.2 FSI
Audi S5 2013-2017 B8.5 3.0 TFSI
Audi S5 2018-Present B9/B9.5 3.0 TFSI
Audi S6 2012-2018 C7/C7.5 4.0 TFSI
Audi S6 2019-Present C8 2.9 TFSI
Audi S7 2012-2018 C7/C7.5 4.0 TFSI
Audi S7 2019-Present C8 2.9 TFSI
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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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]
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SKU: 87434078980

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4.5 ★★★★★
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Verified Purchase
Shawn
Massapequa, US
★★★★★ 5
Best travel MagSafe Charger
Color: Black
I recently purchased the Anker Nano MagSafe Portable Charger, Ultra-Slim 5,000mAh, and it has quickly become one of my favorite everyday tech accessories. The compact design and reliable charging performance make it incredibly convenient for keeping my iPhone powered throughout the day, whether I’m commuting, traveling, or simply away from an outlet for extended periods. One of the first things I noticed was how slim and lightweight the charger feels. It attaches securely to the back of the phone with MagSafe, making it easy to use while still comfortably fitting in a pocket or small bag. Unlike bulkier power banks, this one maintains a sleek profile that doesn’t add unnecessary weight or thickness. Charging performance has been very reliable overall. The 5,000mAh capacity provides a helpful boost when my battery starts running low, and the magnetic connection stays firmly in place during use. I also appreciate that the charger delivers consistent power without overheating, even during longer charging sessions. The build quality is excellent, which is something I’ve come to expect from Anker products. The materials feel durable and premium, and the minimalist design looks clean and modern. It arrived well-packaged and immediately gave the impression of being a high-quality accessory. Another feature I appreciate is how simple and convenient it is to use. There’s no complicated setup involved—just snap it onto the back of the phone and charging begins automatically. It’s especially useful when traveling or during busy days when carrying cables around can be inconvenient. After using it regularly, I’ve been very satisfied with its reliability and portability. It keeps my phone charged when I need extra power most, and the ultra-slim design makes it easy to carry everywhere without noticing the extra bulk. Overall, the Anker Nano MagSafe Portable Charger, Ultra-Slim 5,000mAh is a dependable and thoughtfully designed portable charger. It offers reliable charging performance, excellent portability, and premium build quality. I would definitely recommend it to anyone looking for a compact and convenient MagSafe-compatible power bank for everyday use.
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Reviewed in the United States on May 25, 2026
M
Verified Purchase
M. Gondek
Chelsea, US
★★★★★ 5
A really great portable charger
Color: Golden
Works great with my Samsung Galaxy S25 in a magnetic case. I love the small form factor, which means I can keep it on my phone to charge while I'm using the phone when I need to. It also means it's incredibly easy to take any time I leave the house, not just when I travel. It does get pretty warm, but I find that keeping the phone face down helps that a lot. And of course using the phone while it's charging makes it hotter. One note if You're like me and you've never used one of these: there's a small button on the side that activates or deactivates the magnet. I thought the magnet had died because it was no longer attaching to my phone. Then I randomly held the button down and it snapped right back on. It's a useful feature now that I know that it's there, so I don't leave the magnet on when it might be near swipeable cards in my bag. Funny they don't mention anything about that in all the product images, but now I know.
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Reviewed in the United States on April 24, 2026
Z
Verified Purchase
Zach B.
Lowell, US
★★★★★ 5
Heat and Charging Complaints Are Unjustified
Color: White
Good product overall. I was going to give it 4 stars because it hangs slightly off the bottom of my iPhone 15 Pro but I realized it says 16/17. Those models might have the MagSafe ring slightly higher on the phone in which case it would fit cleaner. I was worried about Heat after reading the reviews. All inductive charging systems generate waste heat and all charging generates waste heat. It’s nothing extreme here. If it’s in your pocket without air flow around it, it gets quite warm on the phone for sure. In my hand, using the phone for a while plane flight, there’s enough flow that it’s just a bit warm. Battery life is as advertised. It’s somewhere around a charge or so, I didn’t check this scientifically. Plenty to keep you topped up through a cross country air trip. It’s very small and much nicer to have on the phone than some other models I’ve borrowed. Reviews have some complaints that it “doesn’t charge the phone”. That’s a goofy complaint. If the phone is dormant it will add charge percentage. If you’re streaming and emailing, on Bluetooth, and WiFi all at once you’re going to use power about as fast as it can supply without it spiking temperature. I was very happy to just sit at 75% my whole flight while constantly using my phone. It doesn’t matter if it added percentage, you don’t get this to charge your phone, you get this to extend the battery and it does just that. If you can leave your phone out of your pocket where it can breath/cool a bit you’ll be happy with this. Good product and some seem to be expecting it to cheat physics.
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Reviewed in the United States on June 11, 2026
J
Verified Purchase
Just Chris
Charlottesville, US
★★★★★ 5
Quality 100W capable all-in-one USB-C hub from Anker
Style: 7-in-2 4K@30Hz, Style: 7-in-2 4K@30Hz
I recently added a 16" MacBook Pro to the family and with the extra size/weight wanted to slim down on carrying adapters. I also have a 13" MacBook Pro (2018) and wanted something that would work for both of these without any shortfalls. The Anker delivers and works flawlessly on both of my MacBooks. Charging - It offers full rate charging on either unit and so far - hasn't gotten all that warm in the process. I expected a bake fest and me returning it, so was surprised there. Plugs/Ports - I skipped the Hyper-hub craze as I just never liked the fit into my MacBooks. So this is the first dual-port type device I have used on my Mac's, but it fits very well and doesn't feel like anything needs to be forced to work. Likewise on the receiving side, the card slots are friendly and you won't lose your cards, but it still holds them well. The USB-C ports respond well and have worked with all charger cables and dongles that I have. The USB-A's are classic Anker quality. Thinking about this more...I think I actually like plugging and unplugging things in this. There are some brands (cough: UNI) that I wonder if "this is the time" when it breaks on me or keeps my cable end. So far so good on the Anker. Peripherals and what works - I have only used portables on it a few times so I do not have much testing with NVME there yet, but SSD is just fine and works as normal. Only (1) port of this has Displayport active on it (the charge port). So if you are plugging in two screens to one side of the MacBook - that will need to change. At the same time, if you can convert one of those to HDMI you can connect the HDMI and then Displayport (via USB-C) over the charge port. In addition to fitting the ports well I should also mention - on the 13" MacBook Pro and Air this should lie mostly flush with the work surface you are on and the laptop edge. On the 16" MacBook Pro it does have a little gap under it due to the height of that unit. But it still does not protrude past the top edge and won't bug you if you brush your hand over it. TL;DR: At the time of this review I am about a week in. and have removed all the "docks" from my office and home so I can give this a decent test. At 60$ it is more expensive than other options, but performs very well for my needs. Cons: price I guess. I wouldn't mind a GigE Ethernet port on it at the same price point of 60$, or wait for it on sale if you don't care about the port. Big ANKER on the top of It sort of annoying, if I am picking nits. Pros: Quality interface, known brand, works well on multiple years of MacBook with no weirdness or driver problems. Compatible with latest models and software. Color matches the Apple Space Gray acceptably. I hope you found this review helpful, if not - leave a comment and let me know how we can change that! Thanks for reading my review, Chris
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Reviewed in the United States on February 1, 2020
D
Verified Purchase
Dove
Houston, US
★★★★★ 5
The best USB-C Hub on Amazon!
Style: 7-in-2 4K@30Hz, Style: 7-in-2 4K@30Hz
This is the best and most feature complete USB-C hub I have used. I have tested every feature of the hub and have the results below. These tests were performed on my 2019 Macbook Pro 15" Power - As seen in one of my attached pictures this hub provides a consistent 85W to my Macbook pro. This is based on the 85W power brick I have the hub plugged into. This supports up to 100W so it should be future proof for future higher powered adapters up to 100W. Thunderbolt 3 Port - My coworker let me try his 5k@60hz monitor and it looked absolutely gorgeous and worked like a charm (I am going to have to buy one now!!). I also tested my 2x 4k@60hz monitors and they both were working when plugged into a hub. I used the StarTech Thunderbolt 3 to HDMI adapter (Model #TB32HD24K60) and it worked without any additional configuration. HDMI Port - I was able to get my 4k monitor working in 30hz mode. I was not able to get it working in 60hz mode but that is as expected. This matches the description perfectly. USB 3.0 Ports - I tested both ports with an external SSD and multiple different thumb drives. Every device worked as expected. I was able to max out the transfer rates of my external SSD using this port (~500MB/s). I was able to charge my phone and transfer data over both ports. SD/Micro SD - Both ports work as expected. I tested using an ADATA Premier One Micro Class10 SD card which has an advertised transfer rate of 275MB/s. It is one of the fastest Micro SD cards available so is the perfect test device. The maximum I was able to get in either port was ~230MB/s but that is within my acceptable values. I used a cheaper SanDisk Class 10 micro SD while plugging my ADATA into the SD card port with an adapter and was able to use both ports at the same time with the advertised data rates, amazing! Build Quality - This hub is a tank. It feels very solid and I would be shocked if you could break it in normal use. I tested dropping this 5ft off my desk onto hardwood floor and it did not have a scratch on it. Overall thoughts - This hub is a great value and has every feature I would expect in a modern USB-C hub. I am very happy with the purchase and will update my review with any further thoughts. I hope this review helped you make a purchasing decision!
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Reviewed in the United States on January 31, 2020

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