Do the RS-R Best-i Active Coilovers for A90 Supra need a warning canceller?

No. RS-R states that the Best-i Active Coilovers for A90 cars are compatible with the factory Adaptive Variable Suspension and that a damper warning canceller is not necessary. The RS-R dampers carry their own electromagnetic valves, wired plug-and-play at each corner, so the factory controller keeps operating them and no suspension warning appears on the dash.

Will the Supra drive modes still change the suspension?

Yes. The factory controller keeps varying the damping with the drive mode, as it does on the original dampers. The RS-R adjuster sets the base level the electronics work from, so Normal and Sport both start from the setting you choose and the car can be made softer or firmer overall.

How much lower will an A90 Supra sit?

At the RS-R preset the front sits about 30mm to 35mm lower and the rear about 40mm to 45mm lower than stock. The bodies are full-length adjustable, so the ride height can be raised or lowered from there; RS-R recommends a range of minus 10mm to minus 55mm at the front and minus 15mm to minus 70mm at the rear.

What is the difference between the RS-R Best-i Active and Sports-i for the Supra?

The Best-i Active keeps the factory adaptive dampers working through RS-R electromagnetic valves, with no canceller needed. The Sports-i is a manual-damper coilover with the same spring rates, sold for owners who prefer to set damping by hand; it replaces the adaptive dampers, so RS-R requires its damper warning canceller to avoid a dash error.

Can the dampers be rebuilt?

Yes. RS-R builds and assembles the Active range in-house in Japan, so the dampers can be overhauled rather than replaced when they need service. RS-R USA also covers the kit for 1 year or 12,000 miles from purchase, and Bulletproof Automotive handles any claim with RS-R for the owner.

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Description

RS-R Best-i Active Coilovers for A90 / A91 Toyota GR Supra

RS-R’s Best-i Active Coilovers for A90 / A91 Toyota GR Supra lower the car without giving up the factory Adaptive Variable Suspension. RS-R fits its own electromagnetic valves to plug-and-play dampers, so the factory controller keeps running them, the drive-mode switch still works and no warning light appears. You gain full-length height adjustment and a 36-step adjuster on 8.0 kg/mm front and 14.0 kg/mm rear springs, and each set is assembled by RS-R in Osaka and can be overhauled rather than replaced. For a road-driven Supra that should keep every factory function, this is the RS-R kit to choose.

Design and Performance

Every damper in the Active range is a full-length adjustable monotube, so ride height is set at the lower mount and stroke stays the same however low the car goes, which keeps the ride supple on broken pavement. The 36-step adjuster sets the base damping and the factory electronics vary it with the drive mode. The front runs as a true coilover while the multi-link rear keeps a separate spring, as it does from the factory.

Features

RS-R electromagnetic valves read by the factory Adaptive Variable Suspension controller
Plug-and-play wiring at each corner, with no warning light
36-step damping adjustment front and rear
Full-length adjustable monotube dampers
Ti2000 springs, RS-R’s lightweight, sag-resistant spring range
Assembled in-house in Japan and serviceable through RS-R overhaul

Specifications

Spring rate, front: 8.0 kg/mm
Spring rate, rear: 14.0 kg/mm
Damping adjustment: 36 steps front and rear
Preset drop, front: 30-35mm (1.2-1.4in)
Preset drop, rear: 40-45mm (1.6-1.8in)
Maximum adjustment, front: -5mm to -80mm
Maximum adjustment, rear: -15mm to -70mm
Warranty: 1 year or 12,000 miles from purchase

What’s Included

Front coilover assemblies (x2)
Rear dampers (x2)
Rear springs (x2)

Applications

Toyota GR Supra: A90 / A91 (DB42 / DB22) | 2020-2026

Notes

The Best-i Active Coilovers for A90 cars work with the factory adaptive suspension, so no damper warning canceller is needed
For a manual-damper setup, see the RS-R Sports-i Coilovers for A90 / A91 Toyota GR Supra; for track use, the RS-R Sports-i Club Racer Coilovers for A90 / A91 Toyota GR Supra
A wheel alignment is needed after installation and after any ride height change

Frequently Asked Questions

Do the RS-R Best-i Active Coilovers for A90 Supra need a warning canceller? No. RS-R states that the Best-i Active Coilovers for A90 cars are compatible with the factory Adaptive Variable Suspension and that a damper warning canceller is not necessary. The RS-R dampers carry their own electromagnetic valves, wired plug-and-play at each corner, so the factory controller keeps operating them and no suspension warning appears on the dash.
Will the Supra drive modes still change the suspension? Yes. The factory controller keeps varying the damping with the drive mode, as it does on the original dampers. The RS-R adjuster sets the base level the electronics work from, so Normal and Sport both start from the setting you choose and the car can be made softer or firmer overall.
How much lower will an A90 Supra sit? At the RS-R preset the front sits about 30mm to 35mm lower and the rear about 40mm to 45mm lower than stock. The bodies are full-length adjustable, so the ride height can be raised or lowered from there; RS-R recommends a range of minus 10mm to minus 55mm at the front and minus 15mm to minus 70mm at the rear.
What is the difference between the RS-R Best-i Active and Sports-i for the Supra? The Best-i Active keeps the factory adaptive dampers working through RS-R electromagnetic valves, with no canceller needed. The Sports-i is a manual-damper coilover with the same spring rates, sold for owners who prefer to set damping by hand; it replaces the adaptive dampers, so RS-R requires its damper warning canceller to avoid a dash error.
Can the dampers be rebuilt? Yes. RS-R builds and assembles the Active range in-house in Japan, so the dampers can be overhauled rather than replaced when they need service. RS-R USA also covers the kit for 1 year or 12,000 miles from purchase, and Bulletproof Automotive handles any claim with RS-R for the owner.

About RS-R

RS-R began in 1968 as a car parts shop in Osaka and has produced its own suspension, coilovers and mufflers since 1972. Now headquartered in Toyonaka, Osaka, where its plant has been since 1999, RS-R manufactures in-house in Japan, with coilover ranges including Sports-i, Black-i and Best-i and the Ti2000 spring range.

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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RS-R Best-i Active Coilovers for A90 / A91 Toyota GR Supra [XBIT215MA]

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RS-R Best-i Active Coilovers for A90 / A91 Toyota GR Supra

Design and Performance

Features

Specifications

What’s Included

Applications

Notes

Frequently Asked Questions

About RS-R

Reviews