Are the Hipermax R Coilovers for FD3S comfortable enough for daily driving?

Yes, for most owners. HKS built the Hipermax R line for drivers who want circuit performance without giving up everyday comfort, and the 30-step WR Needle adjuster lets an RX-7 run softer on the road and firmer on track. The pillow ball upper mounts do pass more road noise into the cabin than rubber mounts.

Does the kit fit every FD3S model year?

Yes. HKS USA lists the Hipermax R Coilovers for FD3S for the Mazda RX-7 with the 13B-REW engine from 1993 to 2002, covering the US-market cars sold from 1993 to 1995 and later imported Japanese-market cars. Cars with modified arms, subframe changes or unusual wheel offsets should be checked for clearance first.

How low does the kit sit compared with a stock RX-7?

As delivered, HKS sets the kit 29mm below stock height at the front and 35mm below at the rear. The shock body adjusts from stock height down to 68mm lower at the front and 71mm lower at the rear. HKS recommends the delivered setting.

Can HKS change the spring rates on this kit?

Yes. HKS can fit different springs at its factory before the kit ships, within 20 N/mm of the standard 157 N/mm front and 177 N/mm rear rates. The upper mounts cannot be changed before shipping, so the kit always arrives with pillow ball mounts front and rear.

What warranty does HKS give on the Hipermax R?

HKS covers the Hipermax R for 2 years or 40,000 km, roughly 24,850 miles, and offers overhauls so worn dampers can be rebuilt rather than replaced. Damper oil leakage or other faults caused by running the car lower than the HKS delivered height can void the warranty.

Description

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Description

HKS Hipermax R Coilovers for FD3S Mazda RX-7

The HKS Hipermax R Coilovers for FD3S give the 13B-REW powered, rear-drive Mazda RX-7 a single-tube, shock-body length adjustable suspension aimed at owners who drive hard on track and still want a car they can live with on the road. Hipermax R builds on the HIPERMAX S damper and adds three parts found only on the R line: SRF damper oil, LVS high-strength springs and an upper spring retainer. It suits a street FD3S that sees canyon runs and track days.

Features

Single-tube dampers with a large-diameter piston, chosen by HKS for stable damping force characteristics
Dual PVS (Dual Preload Valve System) valving carried over from the HIPERMAX S
WR Needle damping adjuster with a wide adjustment range, so one setup can be softened for the street and firmed up for a session
Shock-body length adjustable construction for setting ride height on the RX-7
Pillow ball upper mounts front and rear, supplied as standard with no rubber mount option before shipping
Upper Spring Retainer, exclusive to Hipermax R, keeps the damper axis and spring load line aligned to cut friction and smooth out damping
SRF Super Response Fluid, a high-viscosity damper oil that resists heat sag and starts damping from very low piston speeds
LVS Low Vibration Springs wound from 210k-grade high-strength wire, with a shorter wire length that saves weight and sharpens steering response
PNE coating that stops parts sticking from rust and reduces the effort needed to adjust ride height
Bump rubber that takes up load gradually to prevent abrupt changes in movement

Specifications

Spring rate, front: 157 N/mm (16 kgf/mm)
Spring rate, rear: 177 N/mm (18 kgf/mm)
Spring length: 150mm straight, front and rear
Ride height as delivered, front: 29mm below stock (adjustable from stock height to 68mm below)
Ride height as delivered, rear: 35mm below stock (adjustable from stock height to 71mm below)
Damping adjustment: 30 steps front and rear
Factory spring rate change: Available front and rear, within 20 N/mm (2 kgf/mm) of standard

Applications

Mazda RX-7: FD3S | 1993-2002 | 13B-REW

Notes

HKS treats its delivered ride height as the recommended setting, and the lowest adjustable height may not be road legal
HKS covers Hipermax R for 2 years or 40,000 km, and damper oil leakage or other problems caused by lowering below the HKS delivered height can void that warranty
The HKS HIPERMAX S Coilover Kit for FD3S Mazda RX-7 is the HIPERMAX S kit for the same car, without the three parts exclusive to the Hipermax R Coilovers for FD3S
Professional installation and a full alignment are recommended after fitting the Hipermax R Coilovers for FD3S

Frequently Asked Questions

Are the Hipermax R Coilovers for FD3S comfortable enough for daily driving? Yes, for most owners. HKS built the Hipermax R line for drivers who want circuit performance without giving up everyday comfort, and the 30-step WR Needle adjuster lets an RX-7 run softer on the road and firmer on track. The pillow ball upper mounts do pass more road noise into the cabin than rubber mounts.
Does the kit fit every FD3S model year? Yes. HKS USA lists the Hipermax R Coilovers for FD3S for the Mazda RX-7 with the 13B-REW engine from 1993 to 2002, covering the US-market cars sold from 1993 to 1995 and later imported Japanese-market cars. Cars with modified arms, subframe changes or unusual wheel offsets should be checked for clearance first.
How low does the kit sit compared with a stock RX-7? As delivered, HKS sets the kit 29mm below stock height at the front and 35mm below at the rear. The shock body adjusts from stock height down to 68mm lower at the front and 71mm lower at the rear. HKS recommends the delivered setting.
How does the Hipermax R compare with the HIPERMAX S for the FD3S? The Hipermax R keeps the HIPERMAX S single-tube dampers, Dual PVS valving and 30-step adjustment, then adds three parts exclusive to the R line: SRF damper oil, LVS high-strength springs and an upper spring retainer. HKS aims the R at owners who put track performance first. Bulletproof Automotive carries both kits for the FD3S.
Can HKS change the spring rates on this kit? Yes. HKS can fit different springs at its factory before the kit ships, within 20 N/mm of the standard 157 N/mm front and 177 N/mm rear rates. The upper mounts cannot be changed before shipping, so the kit always arrives with pillow ball mounts front and rear.
What warranty does HKS give on the Hipermax R? HKS covers the Hipermax R for 2 years or 40,000 km, roughly 24,850 miles, and offers overhauls so worn dampers can be rebuilt rather than replaced. Damper oil leakage or other faults caused by running the car lower than the HKS delivered height can void the warranty.

About HKS

HKS is a Japanese performance engineering brand founded in 1973 and headquartered in Fujinomiya, Shizuoka, with a long-standing reputation for developing high-quality aftermarket parts and motorsport-proven technology for enthusiast and professional applications. Known for innovations in turbocharging and engine performance, HKS produces a broad range of components including exhaust systems, turbo kits, electronics / engine management, and suspension solutions, with product development heavily influenced by decades of involvement in racing disciplines such as circuit time attack, drag, and drifting.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

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HKS Hipermax R Coilovers for FD3S Mazda RX-7 [80310-AZ001]

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HKS Hipermax R Coilovers for FD3S Mazda RX-7

Features

Specifications

Applications

Notes

Frequently Asked Questions

About HKS

Reviews