Ohlins HOS MI21S1 Road & Track DFV Coilover System for 1999-2009 Honda S2000 AP1

Vehicle Fitment

• 1999-2009 Honda S2000 Base (AP1, 2.0L F20C I4, RWD)
• 2004-2009 Honda S2000 Base (AP2, 2.2L F22C I4, RWD)

Fitment Notes

• Fits both AP1 (1999-2003) and AP2 (2004-2009) Honda S2000 variants
• Target ride height reduction: approximately 25mm (front and rear) from stock at recommended setup
• Height adjustment range: approximately ±15mm from recommended ride height
• Professional installation is strongly recommended; refer to Ohlins mounting instructions for setup and adjustment procedure
• Dampers are fully rebuildable and serviceable by Ohlins authorized service centers

Features

• Ohlins patented Dual Flow Valve (DFV) technology provides consistent damping characteristics on both compression and rebound strokes, keeping tires planted through bumps, curbs, and undulating surfaces
• 20+ click single-knob damping adjustment ties compression and rebound together - easily switch between road comfort and track modes
• Monotube damper architecture delivers immediate, sensitive response compared to twin-tube designs
• Aluminum damper bodies reduce unsprung weight and improve heat dissipation during extended track use
• Adjustable ride height via spring preload and length adjusters on all four corners
• Corrosion tested to ISO 9227 salt spray standards for long-term durability
• Fully rebuildable for a lifetime of service with genuine Ohlins spare parts

Specifications

• Part Number: HOS MI21S1
• System Type: Road & Track DFV Coilover Kit - Front & Rear
• Damper Technology: Dual Flow Valve (DFV) Monotube
• Damping Adjustment: 20+ Clicks (Single Knob, Compression & Rebound Linked)
• Internal Design: Monotube
• Front Spring Rate: 100 N/mm (572 lbs/in)
• Rear Spring Rate: 80 N/mm (457 lbs/in)
• Target Ride Height Reduction: ~25mm Front & Rear
• Height Adjustment Range: ±15mm from recommended ride height
• Corrosion Standard: ISO 9227
• Warranty: 2-Year Limited
• UPC: 00840153600395

Included Components

• 2x Front Coilover Strut Assemblies (with top mounts, height adjusters, preload adjusters, springs, and dust covers)
• 2x Rear Shock Assemblies (with top mounts, preload adjusters, springs, and dust covers)
• 1x Mounting Instruction Manual

Product Description

The Ohlins HOS MI21S1 is a complete Road & Track DFV coilover system engineered specifically for the 1999-2009 Honda S2000 (AP1 and AP2). It features Ohlins' patented Dual Flow Valve technology, which allows the damper fluid to flow at equal rates through both compression and rebound strokes - keeping tire contact with the road surface more consistent through bumps and direction changes. The result is a system that genuinely improves on the S2000's already capable chassis dynamics without sacrificing the ride compliance needed for street use.

The 20+ click single-knob adjustment system ties compression and rebound damping together as a matched setting, making setup intuitive for both novice and experienced drivers. Turning the golden knob clockwise firms the damper into track mode; counterclockwise softens it for road driving. Front spring rate is set at 100 N/mm and rear at 80 N/mm following a 2018 revision that also corrected coil bind and short compression stroke issues found in earlier builds. All components are corrosion-tested to ISO 9227 standards, covered by a 2-year limited warranty, and fully rebuildable through Ohlins' authorized service network.