034Motorsport Density Line Bump Stops Front 38mm - 034-403-Z005
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034Motorsport Density Line Bump Stops Front 38mm
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
ОЕМ NUMBER
OEM reference number(s) comparable with the original spare part number:
| 1K0412303F |
RETURN & EXCHANGE ( Last Updated March 8th 2021)
Return Policy:
To initiate the return process, please call or email Strictly European Motors Ltd. We will provide you with a Return Merchandise Authorization number. The RMA number, receipt/Proof of Purchase, and item + original packaging must be included for a return to be valid.
Return Address
Strictly European Motors Ltd
130 Lepage Crt Unit 16
Toronto, Ontario
M3J-3J1
Canada
All returns are subject to a 20% restocking fee. All items being returned must be in new, undamaged condition, and in the original packaging. Any item that has been installed on a vehicle will not be eligible for return. Customers have a 30 day (excludes Unitronic products [15 days] no exceptions ) window from the time of the original shipping date to return an item. Shipping costs are the sole responsibility of the customer. Strictly European Motors Ltd is not responsible for the shipping costs of returns, nor will the initial shipping cost of the item(s) be refunded or reimbursed upon return of said item. All items shipped with FREE shipping will still be subject to actual shipping charges being non-refundable.
We highly recommend insuring items for return, but that is left to the discretion of the customer. Strictly European Motors Ltd is not responsible for any lost, stolen or damaged items. Items can either be exchanged or refunded to the original payment method depending on preference. Exchanges are subject to product availability.
Certain items are non-returnable this includes but is not limited to: special order items, all Uni connect cables, electronic items (items with electrical components), tools, fluids of any kind, cleaning products and on sale/clearance item. These items cannot be returned for a refund or store credit. Under no circumstances will Strictly European Motors Ltd reimburse or pay for any parts/labor charges related to an incorrect, faulty, or defective product.
Please note, when ordering an item, it is incumbent upon the customer to choose the correct item or product for their vehicle. Please ensure you are providing the correct make, model, and year, as well as engine and drivetrain layout when ordering. Mix-ups happen, and Strictly European Motors Ltd prides itself on helping and providing information to customers when they occur. If you are unsure of whether an item will fit your vehicle, please contact Strictly European Motors Ltd and speak to a representative.
We are aware that glitches occur, and sometimes the wrong item is sent. If this occurs, contact us immediately to notify us of the discrepancy. We will work with you to sort out the issue.
Returned and Refused Shipments
All shipments refused by the receiver or returned undeliverable will be processed as a return according to Strictly European Motors Ltd return policy.
Miss-Shipped Orders
Strictly European Motors Ltd tries to ensure all customers receive the parts they have ordered, however mistakes do happen. In the event that Strictly European Motors Ltd ships the incorrect item, Strictly European Motors Ltd will provide a return label so the incorrect item can be returned. A return label will only be issued to the address the item was originally shipped to. Strictly European Motors Ltd will only send out the correct item once the incorrect item is received in the original packaging. Replacement items will only be shipped to the address on the original order. Strictly European Motors Ltd will not provide a refund or store credit for mis-shipped items. All mis-shipped items should be claimed within 3 days of receiving shipment. All mis-shipped items that were attempted to be installed or are not in the original package will be refused.
SHIPPING DETAILS
Shipping Policy:
Strictly European Motors Ltd typically ship all in-stock orders within 1-2 business days of your order being placed. All orders placed on a weekend or holiday closure will be processed the next business day. In the event of a back-order or out of stock item we will do our best to contact you by phone or email with an estimated ship date for the item(s) you ordered. Some items are noted as special-order or require lead-times, so please keep that in mind when ordering such products. To ensure the fastest delivery of your order, some items may be drop-shipped to you from a third party, or shipped in a separate package.
Strictly European Motors Ltd uses Canada Post, UPS and Fed Ex as our primary shipping companies. Strictly European Motors Ltd will make every attempt to ship your order using the method you selected at checkout but in some cases we will ship with an alternative shipping method without notice. Strictly European Motors Ltd is not responsible for any delays caused by any shipping company.
Strictly European Motors Ltd webstore estimates shipping costs to the best of its ability using standard shipping company data bases and dimension data that is entered. All shipping costs are not final and Strictly European Motors Ltd has the right to change shipping cost. Once recalculations of shipping costs are made, a notification will be sent by phone or email. Once recalculated and shipping costs are paid, and only then will Strictly European Motors Ltd ship out your order.
All quoted shipping charges include insurance, handling, and shipping. If your email is provided to us, you will receive your tracking information.
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Free Shipping Policy
Free Shipping Policy Canada
Free shipping is for Canada only and covers all items that are listed as Free shipping with a Canadian Flag Icon. If a Free shipping item is purchased with a non-free shipping item or an over-sized item, the shipping cost will be calculated at check out for non-free shipping items. All items shipped with FREE shipping will still be subject to actual shipping charges if returned. Also, all orders of $499.99 or higher value are eligible for free shipping in Canada. Certain items are excluded from free shipping all together, which may include over-sized or overweight items, including specifically Brake Rotors, Coilovers, among others.
Free Shipping Policy USA
Free shipping is for USA only and covers all items that are listed as Free shipping with an American Flag Icon. If a Free shipping item is purchased with a non-free shipping item or an over-sized item, the shipping cost will be calculated at check out for non-free shipping items. All items shipped with FREE shipping will still be subject to actual shipping charges if returned. Certain items are excluded from free shipping all together, which may include over-sized or overweight items, including specifically Brake Rotors, Coilovers, among others. Some items that originate in the United States will be drop shipped from the manufacturer to American destinations. Duties and excise taxes are not included in free shipping, please refer to our "All International Shipments" policy for more information.
All International Shipments:
Customers are responsible for any and all duty or applicable taxes imposed by their respective countries/provinces/states. Take note that Customs may delay shipments, and such delays are outside of the realm of our control. Please inspect your package upon arrival for damage, and if noticed, contact the carrier immediately. You have 3 days after receiving your item to report missing or damaged product. Strictly European Motors Ltd is not responsible for lost, stolen or damaged goods.