Will the S550 kit fit a Mustang with MagneRide?

No. RS-R Japan states that the kit cannot be fitted to cars with MagneRide adaptive dampers. It suits EcoBoost and GT models with the standard suspension, and the factory rear upper mounts are reused, so they should be inspected during installation.

How much lower will the S550 Mustang sit on the RS-R Sports-i Coilovers for S550?

At the RS-R preset the Sports-i Coilovers for S550 kit sets the S550 Mustang about 20mm to 25mm lower at the front and about 15mm to 20mm lower at the rear. RS-R recommends minus 10mm to minus 45mm at the front and 0mm to minus 40mm at the rear, and the full-length bodies keep the same stroke at any height.

Is the Sports-i comfortable enough to drive every day on the S550 Mustang?

Yes, with the damping set toward the softer end. RS-R developed the Sports-i for winding roads and circuit days, and the adjustable dampers let a S550 Mustang owner soften the ride for the commute and firm it up for a track day or a fast back road. Ride quality also depends on wheel and tire choice and on keeping the height inside the recommended range.

Can the S550 Mustang dampers be rebuilt when they wear?

Yes. RS-R assembles the Sports-i range in-house in Japan, so the dampers on this S550 Mustang kit can be overhauled to restore their original damping rather than replaced. Bulletproof Automotive can arrange the overhaul with RS-R USA, which keeps the original valving and spring rates for the car.

Should the RS-R coilovers on the S550 Mustang be installed by a shop?

It is the safer choice. Fitting coilovers involves the suspension mounts, hubs and brake lines, and the S550 Mustang needs a wheel alignment afterwards. A shop familiar with the car will also set the ride height evenly side to side and torque everything to specification before the alignment is done.

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Description

RS-R Sports-i Coilovers for S550 Ford Mustang EcoBoost / GT (2015-2023)

RS-R’s Sports-i Coilovers for S550 Ford Mustang EcoBoost / GT (2015-2023) give the sixth-generation Mustang RS-R monotube dampers with 36 steps of adjustment at each end. RS-R Japan specifies a 7.0 kg/mm front spring with a firm 12.7 kg/mm rear and a preset about 20mm to 25mm lower at the front and 15mm to 20mm at the rear. The kit does not fit MagneRide cars, and the factory rear upper mounts are reused.

Features

36-step damping adjustment front and rear
Monotube dampers with a large bore and oil volume to resist fade
Full-length adjustable bodies that keep stroke at any ride height
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: 7.0 kg/mm
Spring rate, rear: 12.7 kg/mm
Damping adjustment: 36 steps front and rear
Preset ride height, front: -20mm to -25mm
Preset ride height, rear: -15mm to -20mm
Maximum adjustment, front: 0mm to -70mm
Maximum adjustment, rear: 0mm to -40mm

What’s Included

Front and rear dampers (x4)
Front and rear Ti2000 springs

Applications

Ford Mustang EcoBoost / GT: S550 | 2015-2023 | without MagneRide

Notes

The Sports-i Coilovers for S550 kit uses manual dampers adjusted at each corner
Specifications are RS-R Japan figures for this part number
RS-R Japan states the kit does not fit MagneRide cars
The factory rear upper mounts are reused
A wheel alignment is needed after installation and after any ride height change

Frequently Asked Questions

Will the S550 kit fit a Mustang with MagneRide? No. RS-R Japan states that the kit cannot be fitted to cars with MagneRide adaptive dampers. It suits EcoBoost and GT models with the standard suspension, and the factory rear upper mounts are reused, so they should be inspected during installation.
How much lower will the S550 Mustang sit on the RS-R Sports-i Coilovers for S550? At the RS-R preset the Sports-i Coilovers for S550 kit sets the S550 Mustang about 20mm to 25mm lower at the front and about 15mm to 20mm lower at the rear. RS-R recommends minus 10mm to minus 45mm at the front and 0mm to minus 40mm at the rear, and the full-length bodies keep the same stroke at any height.
Is the Sports-i comfortable enough to drive every day on the S550 Mustang? Yes, with the damping set toward the softer end. RS-R developed the Sports-i for winding roads and circuit days, and the adjustable dampers let a S550 Mustang owner soften the ride for the commute and firm it up for a track day or a fast back road. Ride quality also depends on wheel and tire choice and on keeping the height inside the recommended range.
Can the S550 Mustang dampers be rebuilt when they wear? Yes. RS-R assembles the Sports-i range in-house in Japan, so the dampers on this S550 Mustang kit can be overhauled to restore their original damping rather than replaced. Bulletproof Automotive can arrange the overhaul with RS-R USA, which keeps the original valving and spring rates for the car.
Should the RS-R coilovers on the S550 Mustang be installed by a shop? It is the safer choice. Fitting coilovers involves the suspension mounts, hubs and brake lines, and the S550 Mustang needs a wheel alignment afterwards. A shop familiar with the car will also set the ride height evenly side to side and torque everything to specification before the alignment is done.

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 Sports-i Coilovers for S550 Ford Mustang EcoBoost / GT (2015-2023) [XBIFO110M]

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RS-R Sports-i Coilovers for S550 Ford Mustang EcoBoost / GT (2015-2023)

Features

Specifications

What’s Included

Applications

Notes

Frequently Asked Questions

About RS-R

Reviews