Flashark Coilovers for 2008-2014 Mercedes-Benz C-Class W204
Get a lower, more planted stance and more predictable body control for daily driving or a sportier street setup. Designed for selected rear-wheel-drive 2008-2014 Mercedes-Benz C-Class W204 models, this adjustable coilover suspension kit fits turbocharged four-cylinder C250 and V6 C300 applications while providing 2" to 4" of ride-height adjustment, twin-tube damping, and matched 8 kg/mm springs. These C300 coilovers provide a coordinated front-and-rear suspension upgrade for drivers looking to sharpen handling and customize ride height. Not compatible with C63 or 4MATIC models.
Specifications:
Shock Type: Twin tube
Spring Preload: 7-10 mm
Adjustable Height: Yes, lowering 2" to 4"
Surface Materials: Aluminum, Steel
Spring Rate Front: 8kg/mm(448lbs/in)
Spring Rate Rear:8kg/mm(448lbs/in)
Spring length Front: 182mm
Spring length Rear: 210mm
Coilover overall length Front: 559mm-656mm
Coilover overall length Rear: 588mm-666mm
Features:
1. Twin-tube structure allows sufficient stroke within the shock absorber.
2. High-tensile performance spring—Sterss tested over 600,000 times, with spring distortion less than 0.04%. Plus, the special surface treatment improves durability and performance.
3. Height Adjustment tools included.
4. Rubber top mounts help to deliver a smooth and forgiving ride for city use at any speed and rubber joints assist in absorbing hard impacts.
5. Most pieces in our coilover systems, including mounts, collars, and spring perches, are designed from 6061-T6 Billet Aluminum, resulting in lightweight, durable, and rust-resistant components.
6. Separate height adjustment does not affect damper stroke.
7. Full rebuildable.
8. Lowered height adjustment from 2" - 4" which allows a lower center of gravity and also adds a more aggressive stance
2008-2014 Mercedes Benz W204 C-Class (EXCLUDES: C63, 4-Matic models)
Mercedes W204 C300 & C250 Coilovers FAQ
Q1: Will these coilovers fit my 2008-2014 Mercedes-Benz C-Class W204?
A1: Yes. These Flashark coilovers are designed for the 2008-2014 Mercedes-Benz W204 C-Class, including compatible C300 and C250 models. They are a full suspension kit for drivers who want a lower stance, firmer handling, and a more controlled ride than worn factory suspension.
Q2: Will these coilovers fit a Mercedes C300 4Matic?
A2: No. This product specifically excludes 4-Matic models. If your Mercedes-Benz C300 is AWD/4Matic, do not order this kit unless fitment has been confirmed with the seller first.
Q3: Will this kit fit a W204 C63 AMG?
A3: No. The product fitment excludes C63 models. C63 AMG suspension fitment is different, so a C63 owner should choose a coilover kit designed specifically for the AMG chassis.
Q4: What comes in this Mercedes C300 suspension kit?
A4: This is a complete coilover suspension kit for the W204 C-Class. It includes height-adjustable coilover assemblies and adjustment tools, allowing you to replace the factory shock and spring setup with a lower, more performance-oriented suspension system.
Q5: How much can these W204 coilovers lower the car?
A5: These coilovers are height adjustable and can lower the car by approximately 2 inches to 4 inches. This range is ideal for W204 owners who want to reduce wheel gap, improve stance, and lower the center of gravity.
Q6: Can I keep the factory ride height with these coilovers?
A6: No. This coilover kit is designed for lowering, not for maintaining the original factory ride height. If your goal is only to restore stock suspension height and comfort, factory-style Mercedes C-Class shock absorbers may be a better choice.
Q7: Are these C300 coilovers good for daily driving?
A7: Yes, they can work well for daily driving if you want a firmer and more controlled suspension feel. The twin-tube shock design and rubber top mounts help keep the ride more forgiving for city use compared with overly aggressive track-focused setups.
Q8: Will these coilovers make my Mercedes C-Class ride harsh?
A8: The ride will feel firmer than stock because the car is being lowered and the spring rate is performance-oriented. However, the twin-tube construction and rubber top mounts are designed to balance improved handling with street comfort.
Q9: What are the spring rates on these Mercedes W204 coilovers?
A9: The front spring rate is 8kg/mm, or about 448lbs/in, and the rear spring rate is also 8kg/mm, or about 448lbs/in. This setup helps reduce body roll and improves the planted feel of the C300 or C250 during cornering and braking.
Q10: Do these coilovers have adjustable damping?
A10: The product page does not list adjustable damping settings. The key adjustment is ride height, with separate height adjustment designed so lowering the car does not reduce damper stroke.
Q11: What is spring preload, and how should it be set?
A11: Spring preload is the amount of initial compression applied to the spring before the vehicle weight is fully on the suspension. This kit lists a recommended spring preload of 7-10mm, which helps keep the spring seated correctly and supports proper suspension response.
Q12: Do I need a wheel alignment after installing these W204 coilovers?
A12: Yes. A professional four-wheel alignment is strongly recommended after installing coilovers. Lowering a Mercedes C-Class changes suspension geometry, so camber, toe, and ride height should be checked to help prevent uneven tire wear and poor handling.
Q13: Are coilovers better than lowering springs for a Mercedes C300?
A13: Coilovers are usually the better choice if you want adjustable ride height and a more complete suspension upgrade. Lowering springs are simpler, but they use the existing shocks and offer a fixed drop, while coilovers replace the shock and spring together for more setup flexibility.
Q14: Can I install these Mercedes C300 coilovers myself?
A14: Experienced DIY owners with the correct tools may be able to install them, but suspension work on a W204 should not be treated casually. For best results, professional installation is recommended, followed by proper ride-height setup and a four-wheel alignment.
Q15: What materials are used in this coilover kit?
A15: The product page lists aluminum and steel surface materials, with mounts, collars, and spring perches made from 6061-T6 billet aluminum. This helps reduce weight while supporting durability, corrosion resistance, and long-term suspension performance.