Ohlins B9 A4 S4 / A5 S5 / RS4 RS5 Coilover Suspension - Road & Track

The Öhlins Road & Track Coilover Suspension for the Audi A4, S4, A5, S5, RS4, and RS5 (B9) is engineered to deliver a precise balance between track-focused performance and everyday drivability. Built around Öhlins' Dual Flow Valve (DFV) technology and constructed with aluminum monotube damper bodies, this system provides exceptional control over both compression and rebound damping — allowing the suspension to respond accurately to changing road and circuit conditions while maintaining consistent tire contact across all four corners.

Unlike conventional damper designs, the DFV system manages fluid flow across the full range of shaft speeds. At low shaft speeds, fluid passes through the bleed circuit for controlled, compliant damping. As shaft speed increases, flow transitions through the piston ports, and under high load or sudden impacts, the DFV opens to allow additional flow. This results in improved bump absorption, increased traction, and reduced harshness — unlocking the full dynamic potential of Audi's B9-generation sport sedan and coupe platforms.

Öhlins compensates for heat-induced changes in fluid viscosity using a temperature-reactive needle bleed valve, which adjusts flow as damper temperatures rise during extended track use. This ensures consistent, predictable handling from street driving through sustained circuit sessions, with the same repeatability that Öhlins' motorsport heritage demands.

Ride height adjustment is handled independently from spring preload through a threaded lower mount design. This allows precise lowering without altering spring characteristics or reducing suspension travel, preserving the engineered balance of the system and the natural poise of the B9 chassis.

Product Details

• SKU: AUS MU00S1
• Öhlins Dual Flow Valve (DFV) technology
• Single external adjuster with 25 clicks controlling compression and rebound (1-way)
• Lowering range: approximately 10–35mm front and rear
• Spring rates: 120 N/mm front, 140 N/mm rear
• Aluminum monotube damper construction
• Separate ride height adjustment independent of spring preload
• Rebuildable and serviceable dampers
• Designed for both street and track use

Front Suspension Features

• Aluminum monotube damper construction
• Spring preload adjustment
• Separate damper length adjustment for ride height
• Compatible with factory top mounts

Rear Suspension Features

• Aluminum monotube shock absorber
• Spring preload adjustment
• Independent ride height adjustment
• Compatible with factory top mounts

Vehicle Applications

• Audi A4 (B9)
• Audi S4 (B9)
• Audi A5 (B9)
• Audi S5 (B9)
• Audi RS4 (B9)
• Audi RS5 (B9)

Technical Resources

• Installation Guide
• Owner's Manual
• Cancellation Kit Installation Guide (35020-31)

Notes

• Suspension components are non-returnable once installed
• Vehicles equipped with factory electronic dampers (Audi Magnetic Ride) require the Öhlins cancellation kit (part no. 35020-31) to eliminate dashboard warning lights when installing this coilover system — verify your vehicle's configuration before ordering