What is the practical difference between the piggyback and hose-mounted reservoir options on the A9x GR Supra NTR-R3?

The piggyback reservoir mounts directly to the shock body, keeping the unit compact and self-contained. The hose-mounted reservoir connects via a separate hose, allowing it to be positioned away from the shock body where space or heat management requires it. On the GR Supra, both options are available at the front; the rear runs hose-mounted only. The choice generally comes down to packaging requirements and how the car is being built.

How does 3-way independent adjustment differ from the combined adjustment on the NTR-R1?

The NTR-R1 uses a single adjuster controlling compression and rebound together. The Nitron NTR-R3 coilover separates high speed compression, low speed compression, and rebound into three independent circuits, each with its own adjustment range. That separation gives engineers the ability to tune each damping characteristic on its own terms rather than making compromises across the range with a single control.

Can the NTR-R3 be serviced and revalved?

Yes. Every Nitron NTR-R3 coilover kit is fully serviceable and built to be rebuilt. Seals, oil, shim stacks, and spring rates can all be refreshed or changed independently, and the modular construction means individual dampers can be sent back without pulling the whole kit. For a car in regular track use, that serviceability is what makes the R3 a long-term investment rather than a consumable.

Is the NTR-R3 a significant step up from the NTR-R1 in terms of installation complexity?

The hardware is more involved given the external reservoirs and independent adjustment circuits, but the installation process follows the same principles as any coilover fitment. The hose-mounted reservoirs on the rear require positioning during install, and the three adjustment knobs need to be set before the car goes back on the road, but neither adds meaningful complexity for anyone with coilover installation experience. The bigger difference is in setup depth once the car is on the ground.

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Description

Nitron NTR-R3 Coilover Kit for A90 Toyota GR Supra

The Nitron NTR-R3 coilover kit for the A90 Toyota GR Supra is built for drivers and engineers who want to get everything this chassis is actually capable of. Independent 3-way damping adjustment, with separate high and low speed compression control alongside rebound, gives the range needed to properly dial the car in across different circuits and conditions rather than settling for a single compromise setting. The front units can be specified with a piggyback or hose-mounted reservoir depending on how much room there is to package around the strut towers, while the rear runs a hose-mounted reservoir regardless of which rear suspension configuration is chosen. Coilover and divorced rear suspension are both available, so the kit can be set up for a Supra that splits time between street and track or one built exclusively for competition. A large diameter piston and ultra-strong piston rod sit at the core of the design, providing the damping control and feedback that serious setups depend on, with high and low speed compression adjustment accessible at both ends without adding complexity to the installation. The NTR-R3 coilover is a proven race winner with lap records across a wide range of international motorsport formulas, and every kit is custom built, custom sprung, and fully serviceable. Hard-anodized titanium finish parts and high-grade materials keep corrosion out and weight in check, so the dampers hold their performance standard season after season.

Coilover vs Divorced Rear Suspension

The NTR-R3 for the A90 GR Supra is available in coilover or divorced rear suspension configurations. Coilover packages the spring and damper into a single unit, keeping the install straightforward for a Supra built primarily for street and track day use. Divorced separates the spring and damper so each can be positioned and tuned independently, giving a dedicated race build the setup flexibility to extract the most from the platform without compromising damper positioning or spring rate tuning.

Specialized Bi-Axis Hose Fittings

Nitron R3 Hose shocks use Nitron’s own 720 degree Bi-Axis fittings exclusively; a proprietary design that delivers clean, precise installation without the fitment compromises that come with conventional end fittings.

Unique Technology

Nitron builds every shock from precision components that go through a thorough design and development process well before final assembly. The modular construction gives engineers the flexibility to approach each application on its own terms without cutting corners on part quality or how components perform together under load. Everything is machined to tight tolerances and inspected individually by trained technicians, with quality control running through every stage of production rather than being concentrated at the end. New materials, finishes, and processes are validated extensively before adoption, with proprietary Nitron technologies integrated throughout to produce shocks that consistently hold up against the competition on road and track. That engineering standard is what the brand has been built on since 1998.
- Basic Damper Design:
  1. End Eye / Top Mount
  2. Damper Piston & Shim Stack
  3. Shaft / Rod
  4. Floating / Separator Piston
  5. Suspension Oil
  6. Compressed Nitrogen Gas

Bespoke Engineering

Nitron doesn’t adapt a generic damper to fit the GR Supra; they engineer one around it. Every application goes through a dedicated development process where components, spring rates, and damping characteristics are determined by the specific platform, not borrowed from something close enough. The geometry, weight distribution, and suspension travel of the chassis are part of the design from the beginning, not corrections introduced later. That’s the difference between suspension that works with a car and suspension that was developed for it.

Features

Coilover or divorced rear suspension types
Piggyback & hose reservoir types
16 clicks of high compression
26 clicks of low compression
24 clicks of rebound
Preload adjuster
3-way independent adjustment
Full alloy body
Consists of 4 coilovers, reservoirs, hoses, and top mounts
Hand made to order

Specifications

Coilover Type: NTR-R3
Adjustment Type: 3-way independent
Adjustment: 16 clicks of high compression / 26 clicks of low compression / 24 clicks of rebound
Reservoir Type:
- Front:
  - Hose
  - Piggyback
- Rear: Hose
Rear Suspension Types:
- Coilover
- Divorced
Droplinks Included: No
Recommended Spring Rates:
- FRS – Fast Road Spec:
  - Front: 343lbs/inch (60N/mm)
  - Rear:
    - Coilover: Data not available
    - Divorced: 799lbs/inch (140N/mm)
- TDS – Track Day Spec:
  - Front: 457lbs/inch (80N/mm)
  - Rear:
    - Coilover: Data not available
    - Divorced: 913lbs/inch (160N/mm)

Applications

Toyota GR Supra: A90, MK5 | 2020-2026

Other Suspension Kits for A90 GR Supra

Notes

Compatible on 2.0L and 3.0L GR Supra models
If your GR Supra is equipped with electronic damping, the Nitron Electronic Damping Delete Kit is required when fitting a non-electronic coilover kit to prevent fault codes and warning lights
Custom spring rates also available, please contact us directly here for more information or for a consultation on custom rates
Images used for illustration purposes only. Specific details, finishes and end fittings may differ from that shown.

Frequently Asked Questions

What is the practical difference between the piggyback and hose-mounted reservoir options on the A9x GR Supra NTR-R3? The piggyback reservoir mounts directly to the shock body, keeping the unit compact and self-contained. The hose-mounted reservoir connects via a separate hose, allowing it to be positioned away from the shock body where space or heat management requires it. On the GR Supra, both options are available at the front; the rear runs hose-mounted only. The choice generally comes down to packaging requirements and how the car is being built.
How does 3-way independent adjustment differ from the combined adjustment on the NTR-R1? The NTR-R1 uses a single adjuster controlling compression and rebound together. The Nitron NTR-R3 coilover separates high speed compression, low speed compression, and rebound into three independent circuits, each with its own adjustment range. That separation gives engineers the ability to tune each damping characteristic on its own terms rather than making compromises across the range with a single control.
Can the NTR-R3 be serviced and revalved? Yes. Every Nitron NTR-R3 coilover kit is fully serviceable and built to be rebuilt. Seals, oil, shim stacks, and spring rates can all be refreshed or changed independently, and the modular construction means individual dampers can be sent back without pulling the whole kit. For a car in regular track use, that serviceability is what makes the R3 a long-term investment rather than a consumable.
Is the NTR-R3 a significant step up from the NTR-R1 in terms of installation complexity? The hardware is more involved given the external reservoirs and independent adjustment circuits, but the installation process follows the same principles as any coilover fitment. The hose-mounted reservoirs on the rear require positioning during install, and the three adjustment knobs need to be set before the car goes back on the road, but neither adds meaningful complexity for anyone with coilover installation experience. The bigger difference is in setup depth once the car is on the ground.

About Nitron Suspension

Nitron Suspension has been at the forefront of precision suspension engineering since 1998, founded by Guy Evans with the goal of building high-performance shocks for enthusiasts and professionals alike. Over 200 dealers now carry Nitron products across Europe, Asia, the US, Australasia, and Africa. In 2008, the company moved into a dedicated facility in the UK’s Motorsport Valley, adding dynamometers, 5-axis CNC machines, and 3D CAD capabilities to support both growing demand and continued product development. A second expansion came in 2023 with a new office in Murrieta, California. The team behind every Nitron product draws from deep backgrounds in machining, materials technology, hydraulics, bike engineering, and F1 racing, with many engineers bringing firsthand experience as competitive drivers and riders. That depth of knowledge across both the technical and competitive sides of motorsport shapes every product Nitron develops.

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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Nitron NTR-R3 Coilover Kit for A90 Toyota GR Supra [NTCTO013R3]

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Nitron NTR-R3 Coilover Kit for A90 Toyota GR Supra

Coilover vs Divorced Rear Suspension

Specialized Bi-Axis Hose Fittings

Unique Technology

Bespoke Engineering

Features

Specifications

Applications

Other Suspension Kits for A90 GR Supra

Notes

Frequently Asked Questions

About Nitron Suspension

Reviews