SKU: 48251581335

034Motorsport Density Line Bump Stops, Rear, 81mm - Audi B9/C8 Chassis - 034-403-Z002

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Description

034Motorsport Density Line Bump Stops, Rear, 81mm - Audi B9/C8 Chassis - 034-403-Z002034 Motorsport Density Line Bump Stops, Rear, 81mm Audi B9 C8 Chassis 034 403 Z002. 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, Rear, 81mm - Audi B9/C8 Chassis - 034-403-Z002.

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: 102mm
    • 034 Height: 81mm
  • Increased Durometer Over OE for More Effective Compression Limiting Without Becoming Overly Harsh:
    • OE: 50A
    • 034: 55A

Part Number Interchange:

  • 8W0 512 131 G

What's Included:

  • 1 Pair - 034Motorsport Bump Stops

Fitment:

Make Model Years Chassis Engine
Audi A4 2017-Present B9/B9.5 2.0 TFSI
Audi A5 2018-Present B9/B9.5 2.0 TFSI
Audi A6 2019-Present C8 2.0 TFSI
Audi A6 2019-Present C8 3.0 TFSI
Audi A7 2019-Present C8 2.0 TFSI
Audi A7 2019-Present C8 3.0 TFSI
Audi Allroad 2017-Present B9/B9.5 2.0 TFSI
Audi Allroad 2019-Present C8 3.0 TFSI
Audi RS4 2018-Present B9/B9.5 2.9 TFSI
Audi RS5 2018-Present B9/B9.5 2.9 TFSI
Audi RS6 2020-Present C8 4.0 TFSI
Audi RS7 2019-Present C8 4.0 TFSI
Audi S4 2018-Present B9/B9.5 3.0 TFSI
Audi S5 2018-Present B9/B9.5 3.0 TFSI
Audi S6 2019-Present C8 2.9 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:
  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: 48251581335

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4.1 ★★★★★
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J
Jim
Battle Creek, US
★★★★★ 4
Made of alloy and mostly plastic
Style: MagSafe Car Phone Holder, Style: MagSafe Car Phone Holder
This is a fairly decent MagSafe mount that attaches cleanly to an LCD car display. It works and looks good on my Tesla Model 3. The only part that is metal is the bracket but the rest seems to be made from a metallic looking plastic. I do like that the inside of the clamps can be adjusted independently and there’s a layer of silicone padding to protect the screen. I was able to make it pretty tight with no movement at all. It only works well on a “naked” phone or a cover that has MagSafe ring built in. I have a super thin case and it seems to hold pretty well so far but I do wish the magnets were a bit stronger. The good thing is that it uses a standard ball joint so I have other types of mounts that could easily fit in place of the MagSafe version. The only other thing that I think detracts from the overall “clean look” is the screened text on the clamp that simply says “Screen Holder”. It would have been better not there.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 24, 2025
K
Verified Purchase
K.G.
Omaha, US
★★★★★ 5
EXCELLENT Product for using with the dash mount BUT not so good for all cars with the vent mount.
This is a great product for wireless phones worked perfectly for my SG S21 the mount is really good sturdy flexible and firm if done right. BUT the vent jack plug is short for my Camry 2018 doesn't hold the phone firmly. It keeps wobbling when driving. So if you're looking for using just the vent holder make sure your car has a short AC flap so it can mount the plug firmly hold the phone properly. The phone holder is amazing it works really good just the way it is shown in the description. So guys first check the flap size of your cars AC vent must be short if you're looking to use the Vent plug holder. But if you're going to use it only with the dash mount its fantastic and holds the phone really firm and good. I really love this product and highly recommend to buy.
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Reviewed in the United States on September 12, 2025
R
Verified Purchase
Richard shinnamon
Natrona Heights, US
★★★★★ 5
Cell phone charger
Ok I've had alot of cell phone holdes,,,but this one is the best I've had. I use the vent clip when I start me car it open up to set my phone in and automatically closes to lick the phone I. And starts charging,,just remember to take oho e out before shutting off the cat because it work off you USB PORT so it needs the power in the unlock your phone Two thumbs up
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Reviewed in the United States on March 31, 2026
T
Verified Purchase
Tiffany Hammond
Pawtucket, US
★★★★★ 5
Fastens to the windshield and stay secure
Preformed well Good value for money
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Reviewed in the United States on May 29, 2026
M
Verified Purchase
MamaSylvia
Boise, US
★★★★★ 4
This sticks to my Chrysler Pacifica!
I bought a new-to-me Chrysler Pacifica and of course wanted a phone holder or two for when my husband and I are travelling. I absolutely adore the car, but I've never had so much trouble finding a phone holder that would stick to the dash, no matter how thoroughly I cleaned it with alcohol! Finally found this one, but it only sticks if you do NOT activate the suction part. That pulls the sticky part off the dash. And it's not very attractive on top of the dash. I'm more concerned with function than appearance so I'm happy with it, and it works great. The phone stays put and stays charged, which is all I ask.
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Reviewed in the United States on May 21, 2026

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