HKS Hipermax S Full Coilover Kit – Mazda RX-7 FD3S 1992–2002 | Street & Track Damper System

The HKS Hipermax S Full Coilover Kit for the Mazda RX-7 FD3S (1992–2002) is a complete 4-corner coilover suspension system engineered by HKS — one of Japan's most respected performance suspension and engine management brands — specifically for the FD3S platform. The Hipermax S is HKS's street and track-oriented coilover system — delivering the ride height adjustability, damper tuning capability, and spring rate selection that the FD3S's exceptional chassis potential demands, in a complete kit that replaces the factory suspension at all four corners. The FD3S RX-7 is widely regarded as one of the finest handling platforms ever produced — a near-perfect front-to-rear weight balance, double-wishbone suspension at all four corners, and a lightweight rotary powertrain that rewards precise suspension tuning. The HKS Hipermax S is engineered to unlock that potential — allowing FD3S owners to set the car's ride height and damper characteristics to match their specific driving application, whether street, track day, or time attack.

Key Features:

• Complete 4-corner coilover kit — full front and rear coilover assemblies replacing the factory suspension at all four corners — everything required for a complete suspension upgrade in a single purchase
• HKS Hipermax S damper technology — HKS's street and track-oriented damper specification — engineered for the FD3S's double-wishbone suspension geometry, spring rates, and performance requirements
• Ride height adjustability — adjustable ride height via threaded spring perch — set the FD3S's ride height to match your specific application and aesthetic requirements
• Damper adjustment — adjustable damper settings for tuning the suspension's response characteristics to match your driving style and application — softer for street comfort, firmer for track precision
• FD3S specific — engineered for the Mazda RX-7 FD3S chassis (1992–2002) — correct geometry and spring rates for the FD3S's double-wishbone suspension at all four corners
• HKS engineering quality — manufactured by HKS, one of Japan's most respected performance brands with extensive suspension development experience on the FD3S platform
• Complete kit — includes all four coilover assemblies and required hardware for installation

Performance Benefits:

• Unlocking the FD3S Chassis: The Mazda RX-7 FD3S is one of the most capable handling platforms ever produced — a near-50/50 front-to-rear weight balance, double-wishbone suspension at all four corners, and a lightweight rotary powertrain that places minimal mass ahead of the front axle. The factory suspension is competent but conservative — tuned for a broad range of drivers and road conditions rather than for the FD3S's maximum handling potential. The HKS Hipermax S allows the FD3S's chassis to be tuned to its potential — with ride height, spring rates, and damper settings matched to the driver's specific application and skill level.
• Ride Height Adjustment: The Hipermax S's threaded spring perch allows precise ride height adjustment at each corner — enabling the FD3S to be set at the correct ride height for track use (lower centre of gravity, reduced aerodynamic lift, improved aerodynamic balance) or street use (adequate clearance for road conditions). The ability to set ride height independently at each corner also allows corner weight adjustment for track applications where balanced corner weights are a priority on the FD3S's already well-balanced chassis.
• Damper Tuning: The Hipermax S's adjustable damper settings allow the suspension's response characteristics to be tuned to match the driver's preferences and the application's requirements — from a softer, more compliant setting for street driving comfort to a firmer, more responsive setting for track use where body motion control and transient response are priorities. The FD3S's double-wishbone geometry responds particularly well to damper tuning — the independent four-corner geometry allows each corner's damping to contribute to the car's overall balance in a way that simpler suspension designs cannot.
• Improved Handling Precision: The Hipermax S's coilover design — with matched spring rates and damper valving engineered for the FD3S's suspension geometry — delivers significantly improved handling precision over the factory suspension. Reduced body roll, improved transient response, and more consistent suspension geometry under load contribute to a more precise, more confidence-inspiring handling character that allows the FD3S's exceptional chassis balance to be more fully exploited.

Specifications:

• Brand: HKS
• Part Number: HKS80300-AZ002
• Barcode: 80300-AZ002
• Series: Hipermax S
• Kit Type: Full coilover kit (4-corner)
• Application: Mazda RX-7 FD3S — 1992–2002
• Weight: 48.9 lbs (shipping weight)

Fitment Information:

• Mazda RX-7 FD3S — 1992–2002 (all variants)
• The FD3S chassis was produced from 1992 to 2002 across multiple series (Series 4, 5, 6, 7, 8) — verify that HKS80300-AZ002 is the correct part number for your specific FD3S series and market specification (JDM / USDM / EUDM) by cross-referencing with HKS's fitment guide or contacting Straight Six Imports before ordering.
• A four-wheel alignment is required after coilover installation. Professional installation by an experienced FD3S suspension specialist strongly recommended.

What's Included:

• HKS Hipermax S front coilover assemblies (pair)
• HKS Hipermax S rear coilover assemblies (pair)
• All required mounting hardware
• Refer to HKS product documentation for complete kit contents and spring rate specifications

Installation Notes:

• Professional installation by an experienced FD3S suspension specialist strongly recommended — coilover installation on the FD3S's double-wishbone suspension requires correct torque specifications, correct spring perch height setting, and a four-wheel alignment after installation
• A four-wheel alignment is required after coilover installation — do not drive the vehicle at speed before a full alignment is performed
• Set ride height with the vehicle at kerb weight (fuel, fluids, and driver weight) for accurate ride height measurement — setting ride height on an unloaded vehicle will result in incorrect ride height under normal driving conditions
• Set damper adjustment to the manufacturer's recommended baseline setting before the first drive — adjust from the baseline after evaluating the suspension's behaviour on your specific roads and track
• Inspect all suspension components (control arms, bushings, ball joints, tie rod ends) before installation — the FD3S's suspension bushings are known to deteriorate with age and should be inspected and replaced if worn before installing new coilovers
• The FD3S's cooling system and engine bay layout require careful attention during front suspension work — ensure all cooling system components are correctly reinstalled and secured after front coilover installation

Why HKS?

HKS is one of Japan's most respected and longest-established performance brands — with a product lineup spanning coilovers, exhaust systems, air intakes, turbochargers, ECU tuning systems, and engine components for a wide range of Japanese performance platforms. HKS has a long history of development on the FD3S RX-7 platform — one of the most iconic Japanese performance cars ever produced — and the Hipermax S FD3S kit reflects that platform-specific development experience. For FD3S owners who want a coilover system from a brand that genuinely understands the platform's suspension geometry and performance potential, HKS Hipermax S is a well-regarded choice.

Perfect For:

• Mazda RX-7 FD3S owners seeking a significant suspension upgrade over the factory setup — improved ride height adjustability, damper tuning, and handling precision for street and track use
• FD3S track day and time attack builds where the factory suspension's ride height, spring rates, and damper characteristics are limiting factors in exploiting the chassis's exceptional handling potential
• Street performance FD3S builds where a quality coilover system delivers improved handling precision and a lower, more aggressive stance without sacrificing daily drivability
• Owners who want a complete 4-corner HKS coilover kit from a brand with proven FD3S suspension development experience

Note: Verify FD3S series and market specification compatibility before ordering. Four-wheel alignment required after installation. Professional installation strongly recommended. Inspect FD3S suspension bushings before installation — replace if worn. Set ride height at kerb weight for accurate measurement.