SKU: 68897822875

034Motorsport Density Line Bump Stops, Front, 38mm - Audi/Volkswagen PQ35/MQB - 034-403-Z005

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Description

034Motorsport Density Line Bump Stops, Front, 38mm - Audi/Volkswagen PQ35/MQB - 034-403-Z005034Motorsport Density Line Bump Stops, Front, 38mm Audi Volkswagen PQ35 MQB 034 403 Z005. 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

034Motorsport - Density Line Bump Stops, Front, 38mm - Audi/Volkswagen PQ35/MQB - 034-403-Z005.

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: 55mm
    • 034 Height: 38mm
  • Increased Durometer Over OE for More Effective Compression Limiting Without Becoming Overly Harsh:
    • OE: 50A
    • 034: 55A

Part Number Interchange:

  • 1K0 412 303 F

What's Included:

  • 1 Pair - 034Motorsport Bump Stops

Fitment:

Make Model Years Chassis Engine
Audi RS3 8V 2.5 TFSI 2015-2017
Audi RS3 8V.5 2.5 TFSI EVO 2017-2022
Audi RS3 8Y 2.5 TFSI 2023-Present
Audi TT 8S 2.0T Gen 3 2016-2020
Audi TTS 8S 2.0T Gen 3 2016-2020
Audi TTRS 8S 2.5 TFSI EVO 2018-2022
VW Arteon I 2.0T Gen3 2019-2021
VW Arteon I.5 2.0T Gen4 2022-2024
VW CC B7 2.0 TSI 2009-2015
VW CC B7 3.6L VR6 FSI 2009-2015
VW e-Golf Mk7 €” 2015-2020
VW Golf Mk5 2.0 TSI 2006-2009
VW Golf Mk5 2.0T FSI 2006-2009
VW Golf Mk5 2.5L 2006-2009
VW Golf Mk6 2.0 TDI 2010-2014
VW Golf Mk6 2.5L 2010-2014
VW Golf Mk7/Mk7.5 Alltrack / 1.8T Gen3 2015-2020
VW Golf R Mk6 2.0 T FSI 2012-2013
VW Golf R Mk7/Mk7.5 2.0 TSI Gen 3 2015-2019
VW Golf R Mk8 2.0T Gen4 2021-Present
VW GTI Mk5 2.0 TSI 2008.5-2009
VW GTI Mk5 2.0T FSI 2006-2008
VW GTI Mk6 2.0 TSI 2010-2014
VW GTI Mk7/Mk7.5 2.0T Gen3 2015-2021
VW GTI Mk8 2.0T Gen4 2022-Present
VW Jetta Mk5 2.0 TDI 2005-2010
VW Jetta Mk5 2.5L 2005-2010
VW Jetta Mk6 1.4 TSI 2011-2017
VW Jetta Mk6 1.8T Gen3 2013-2017
VW Jetta Mk6 2.0 TSI 2011-2017
VW Jetta Mk6 2.0 TDI 2011-2015
VW Jetta Mk6 2.0L 8V 2011-2015
VW Jetta Mk6 2.0T Gen3 2011-2017
VW Jetta Mk6 2.5L 2011-2017
VW Passat B6 2.0 TSI 2006-2010
VW Passat B6 2.0T FSI 2006-2010
VW Passat B6 3.6L VR6 FSI 2006-2010


Note: For Audi vehicles equipped with internal front bump stops (Magride or DCC), only rear bumpstops will be used.

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
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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: 68897822875

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Reviewed in the United States on April 10, 2026
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Reviewed in the United States on April 25, 2026
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Valentina
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Lightweight oil that fits into a simple routine
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