Flatout Suspension Porsche 997 C4 [CS] CS-997C4

DISCLAIMER: This is a made to order item. The lead time for this product is 4-8 weeks.

Porsche 997 C4 CS Coilovers – Street & Track Precision

The Flatout CS Coilover system is designed for Porsche 997 C4 drivers who demand superior handling, adjustable ride height, and track-capable performance while retaining daily drivability. Lower your car 0.5”–1.5” front and rear, while maintaining complete tuning control with high-performance, rebuildable assemblies.

This coilover kit balances comfort, control, and adjustability for both spirited street driving and performance track use. Modular design and premium components ensure long-term durability and serviceability.

Note: Vehicles equipped with PASM require an electronic bypass for proper operation.

Key Features

• Height Adjustable → Front & rear lowered 0.5”–1.5” for improved stance and handling.

• Bilstein COB Digressive Piston → Smooth low-speed comfort with firm high-speed performance.

• 3-Way Damping Control → High & low speed compression plus rebound for precise tuning.

• Inverted Front Shocks → Maximum stability and strength under load.

• Eibach Linear Rate Springs → Predictable handling without sacrificing comfort.

• Electro-Plated Nickel Shock Cartridge → Long-lasting corrosion resistance.

• CNC Machined High-Flow Aluminum Piston & Stainless Steel Shims → Precision-engineered components.

• Radial Bearing on Front Assembly → Reduced friction and improved steering response.

• Dual Height Adjustable & 20-Point Rebound Adjustable → Full suspension tuning capability.

• Camber / Pillowball Upper Mounts Standard → Track-ready alignment adjustment.

• Sensor Line Brackets on Lower Mounts → Retain factory sensor compatibility.

• Individual Parts Available → Easy service or future upgrades.

• 3-Year Warranty Against Defects → Built to last with peace of mind.

• Assembled in the USA → High-quality manufacturing standards.

Why Choose CS Coilovers?

• Street & Track Ready → Perfect balance of comfort and high-performance handling.

• Precision Handling → Modular, rebuildable design for consistent performance.

• Durable & Serviceable → Premium components built to last under aggressive driving.

• Customizable → Fine-tune damping, height, and alignment to suit your driving style.

Flatout CS Coilovers transform your Porsche 997 C4 into a vehicle that performs on the track without compromising everyday drivability.