Do the RS-R Best-i Active Coilovers for XE30 IS 350 F Sport work with AVS?

Yes. RS-R states that the Best-i Active Coilovers for XE30 IS 350 F Sport cars of 2021-2025 are compatible with the factory AVS system, so the drive modes keep working and no warning canceller is needed. The dampers also offer 24 steps of adjustment front and rear.

Will this kit fit an early 2021 IS 350?

RS-R specifies the kit only for cars built after November 2020. The production date is printed on the door jamb label, and owners of earlier cars should confirm with Bulletproof Automotive before ordering so the correct RS-R kit is supplied.

How much lower will a 2021-2025 IS 350 F Sport sit?

At the RS-R preset the front sits about 30mm to 35mm lower and the rear about 35mm to 40mm lower than stock. RS-R recommends minus 10mm to minus 65mm at the front and minus 10mm to minus 60mm at the rear for adjustment.

Why are the springs softer than on the earlier IS kits?

RS-R specifies 8.0 kg/mm front and 7.0 kg/mm rear springs for the 2021 and later car, against 10.0 kg/mm and 8.3 kg/mm on the 2014-2020 kits. RS-R sets rates per model to suit the chassis and its factory damping, and the softer rates reflect that tuning for the revised IS.

Can the dampers be rebuilt?

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

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Description

RS-R Best-i Active Coilovers for XE30 Lexus IS 350 F Sport RWD (2021-2025)

RS-R’s Best-i Active Coilovers for XE30 Lexus IS 350 F Sport RWD (2021-2025) bring the current IS down without switching off its Adaptive Variable Suspension. RS-R confirms the kit works with the factory AVS, gives the dampers 24 steps of adjustment front and rear, and runs 8.0 kg/mm front and 7.0 kg/mm rear springs, softer than the earlier kits to match the revised car. RS-R limits fitment to cars built after November 2020, and the factory rear upper mounts are reused. Assembled and serviced by RS-R in Osaka, this is the kit for a late IS 350 F Sport that should keep every factory function.

Design and Performance

Full-length adjustable monotube bodies set height at the lower mount without losing stroke, so the IS keeps its composure over broken pavement even at RS-R’s preset of about 30mm to 35mm lower at the front and 35mm to 40mm at the rear.

Features

Compatible with the factory Adaptive Variable Suspension
24-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: 7.0 kg/mm
Damping adjustment: 24 steps front and rear
Preset drop, front: 30-35mm (1.2-1.4in)
Preset drop, rear: 35-40mm (1.4-1.6in)
Maximum adjustment, front: +15mm to -95mm
Maximum adjustment, rear: -10mm to -60mm
Warranty: 1 year or 12,000 miles from purchase

What’s Included

Front coilover assemblies (x2)
Rear dampers (x2)
Rear springs (x2)
Rear spring height adjusters (x2)

Applications

Lexus IS 350 F Sport: XE30 (GSE31) | 2021-2025 | RWD, built after November 2020

Notes

The Best-i Active Coilovers for XE30 IS 350 F Sport cars are compatible with the factory AVS, so no canceller is needed
RS-R specifies this kit only for cars built after November 2020, and the factory rear upper mounts are reused
For a manual-damper kit for the same years, see the RS-R Sports-i Coilovers for XE30 Lexus IS 300 / IS 350 RWD (2021-2025)
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 XE30 IS 350 F Sport work with AVS? Yes. RS-R states that the Best-i Active Coilovers for XE30 IS 350 F Sport cars of 2021-2025 are compatible with the factory AVS system, so the drive modes keep working and no warning canceller is needed. The dampers also offer 24 steps of adjustment front and rear.
Will this kit fit an early 2021 IS 350? RS-R specifies the kit only for cars built after November 2020. The production date is printed on the door jamb label, and owners of earlier cars should confirm with Bulletproof Automotive before ordering so the correct RS-R kit is supplied.
How much lower will a 2021-2025 IS 350 F Sport sit? At the RS-R preset the front sits about 30mm to 35mm lower and the rear about 35mm to 40mm lower than stock. RS-R recommends minus 10mm to minus 65mm at the front and minus 10mm to minus 60mm at the rear for adjustment.
Why are the springs softer than on the earlier IS kits? RS-R specifies 8.0 kg/mm front and 7.0 kg/mm rear springs for the 2021 and later car, against 10.0 kg/mm and 8.3 kg/mm on the 2014-2020 kits. RS-R sets rates per model to suit the chassis and its factory damping, and the softer rates reflect that tuning for the revised IS.
Can the dampers be rebuilt? Yes. RS-R assembles its Active coilovers in-house in Japan, so the dampers can be overhauled rather than replaced when they need service. RS-R USA covers the kit for 1 year or 12,000 miles from purchase. 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 XE30 Lexus IS 350 F Sport RWD (2021-2025) [XBIT591MA]

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RS-R Best-i Active Coilovers for XE30 Lexus IS 350 F Sport RWD (2021-2025)

Design and Performance

Features

Specifications

What’s Included

Applications

Notes

Frequently Asked Questions

About RS-R

Reviews