HKS HIPERMAX S: 80300-AT010 vs. New 2026 FLAT RIDE 80330-AT010 (MKIV Supra) | Fuji Motorsports
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HKS HIPERMAX S 80300-AT010 vs.
the new 2026 FLAT RIDE 80330-AT010
Same legendary chassis, two generations of coilover. Here's exactly what HKS changed when the old 80300-AT010 was retired and replaced by the new-generation 80330-AT010 — and how to get the right kit for your MKIV Supra.
Quick answer
80300-AT010 vs. 80330-AT010 at a glance
The new kit keeps the proven HIPERMAX S architecture — monotube damper, 30-level adjustment, Dual PVS, the WR Needle and the FLAT RIDE CONCEPT — and refines it. The meaningful upgrades are in tuning, dust-boot and stabilizer-link durability, and what the warranty now covers.
| Detail | 80300-AT010 (previous) | 80330-AT010 (new 2026) |
|---|---|---|
| Status | Discontinued | Current production |
| Fitment | MKIV Supra (JZA80, 2JZ-GTE) | MKIV Supra (JZA80, 2JZ-GTE) |
| Damper type | Monotube, inverted front (strut-type) | Monotube, inverted front (strut-type) |
| Damping adjustment | 30 levels | 30 levels, redesigned needle for wider soft-side range |
| FLAT RIDE CONCEPT | Yes | Further-evolved, optimized per application |
| Initial-input tuning | HIPERMAX S baseline | Softened for small road imperfections |
| Dust boots | Conventional | DURA BOOTS (new heat/weather/ozone-resistant material) |
| Stabilizer links | Standard | New low-friction links, HIPERMAX-specific geometry |
| Upper mounts | Pillowball / rubber options | Aluminum, shot-blasted finish; pillowball or reinforced-rubber options |
| Spring rate marking | Not printed | Rate printed on each spring |
| Warranty | 3-year / 60,000 km | 3-year / 60,000 km — now also covers boots & stabilizer links |
| Rebuildable / overhaul | Yes | Yes |
| Built in | Japan | Japan |
Discontinued status and feature differences are based on HKS's published product information for the new-generation HIPERMAX S. Always confirm current application details before ordering.
How the new generation is positioned
The chart below illustrates the direction HKS tuned the new 80330-AT010 relative to the outgoing 80300-AT010: the biggest gains are in initial-input comfort, soft-side adjustability, and the durability that backs the longer warranty coverage — without giving up the cornering control the HIPERMAX S is known for.
The redesigned damping needle widens the adjustment range toward the softer end, so a single setup can cover calm street commuting through to spirited back-road driving. The new DURA BOOTS and stabilizer links are what let HKS extend warranty coverage to those wear items.
Illustrative positioning that reflects HKS's stated design goals for the new generation. It is a directional guide, not measured dyno or lap data.
The new-generation upgrades, explained
Further-evolved FLAT RIDE CONCEPT
HKS retuned damping force per application so the suspension tracks the road surface more closely at low speed and controls body attitude smoothly through corners — the comfort-meets-control balance that defines HIPERMAX S, dialed in further.
Softened initial input
The first part of the stroke is tuned to take the edge off small bumps and surface imperfections, so the difference is noticeable the moment you pull away — useful on rough daily roads.
WR Needle — wider soft-side range
The damping-adjustment needle was reshaped with a larger relief passage, expanding the range toward softer settings for more flexible, real-world tuning across the 30 clicks.
Dual PVS
The dual preload valve system smooths rebound behavior and suppresses unnecessary movement, optimized individually for each vehicle to support the evolved ride character.
DURA BOOTS
New dust boots developed with a material chosen for heat, weather, and ozone resistance. The durability jump is a key reason the 3-year / 60,000 km warranty can now extend to the boots.
New stabilizer links
Geometry designed specifically for the HIPERMAX S, with low-friction ball joints so the suspension moves freely. Boot durability is rated comparable to OE, so these are covered under warranty too.
Aluminum upper mounts
Shot-blasted aluminum mounts with reinforced rubber that balances firmness and compliance to absorb fine vibration. Pillowball or reinforced-rubber options depending on the application.
Dedicated springs & insulators
Cold-formed in-house from a high-grade material, now with the spring rate printed on each spring for easier setup. Spring insulators relieve rotational load for smoother, more consistent travel.
HKS HIPERMAX S — MKIV Supra application
Representative full-kit figures for the JZA80 Supra application. The new generation optimizes shim, needle, and bump-rubber selection per vehicle, so confirm the current spec sheet for your exact build before ordering.
| Specification | Value |
|---|---|
| Application | Toyota Supra MKIV (JZA80), 2JZ-GTE |
| Kit type | Full coilover kit (set of four) |
| Damper | Monotube; inverted front for strut-type |
| Damping adjustment | 30 levels |
| Front spring rate | 137 N/mm (14.0 kgf/mm) |
| Rear spring rate | 78 N/mm (8.0 kgf/mm) |
| Front spring length | 200 mm (straight) |
| Rear spring length | 250 mm (straight) |
| Ride height | Length-adjustable shock body (lowers without pre-loading the spring) |
| Thread protection | PNE coating for corrosion resistance / easier height adjustment |
| Warranty | 3-year / 60,000 km; rebuildable |
| Origin | Made in Japan |
Before you order or install
The MKIV Supra kit is not compatible with REAS-equipped vehicles as-is. Installation is possible only if the factory hydraulic (REAS) system is removed first. If you're unsure whether your car has REAS, confirm before purchasing.
Installation notes
- This is a full replacement for the factory struts and shocks; plan for spring compressor work and standard coilover R&R.
- Kits ship pre-assembled with the spanner wrenches and damper-adjustment tool needed to set ride height and stiffness.
- Set damping from full-soft and adjust in small increments; the wider soft-side range means small changes are easy to feel.
- Get a corner-balance and alignment after install — ride-height changes affect camber and toe.
- The lowest height settings may not be street-legal and can cause body/arm contact; stay within the drivable range and HKS's recommended settings to keep the warranty valid.
- Because the Supra is a high-power RWD car, the rear is set toward mild understeer from the factory; tighten the rear dial if you want more rotation.
General guidance only — follow the instructions included with your kit, and have installation done by a qualified shop if you're not equipped for suspension work.
Buy HKS HIPERMAX S at Fuji Motorsports
Searching for either part number? Fuji Motorsports specializes in Toyota and Lexus performance and will route you to the current-generation 80330-AT010 for your MKIV Supra — with fitment confirmed before you check out and US-based support after.
Common questions
What is the difference between HKS 80300-AT010 and 80330-AT010?
Both are HKS HIPERMAX S coilover kits for the MKIV Toyota Supra (JZA80). The 80300-AT010 is the previous generation and is discontinued. The 80330-AT010 is the new 2026 generation built around the further-evolved FLAT RIDE CONCEPT, with refined damping tuning, new DURA BOOTS, new low-friction stabilizer links, and warranty coverage that now extends to those wear items.
Is the 80300-AT010 still available?
HKS has discontinued the 80300-AT010. The direct replacement for the same car is the 80330-AT010. If you found the old number on another listing, check the current part at Fuji Motorsports.
What car does the 80330-AT010 fit?
The MKIV Toyota Supra (JZA80) with the 2JZ-GTE engine. It is not compatible with REAS-equipped models unless the factory hydraulic system is removed.
Do I lose anything by buying the new kit instead of the old one?
No — the new 80330-AT010 keeps the same core HIPERMAX S architecture (monotube damper, 30-level adjustment, Dual PVS, WR Needle, FLAT RIDE CONCEPT) and adds refined tuning, tougher boots and links, and broader warranty coverage. It supersedes the old part for this chassis.
Is it comfortable enough for a street-driven Supra?
The HIPERMAX S line is tuned for street comfort with track capability, and the new generation specifically softens initial input and widens the soft-side adjustment range. With 30 levels of damping you can set it firmer for spirited driving and softer for daily use.
Where's the best place to buy it?
Fuji Motorsports stocks and supports HKS HIPERMAX S for the MKIV Supra, confirms fitment before purchase, and handles Toyota and Lexus performance as a specialty.