Does this Q50 kit fit the Red Sport 400?

No. RS-R lists XLIN122M for the Q50 3.7 and the non-Red Sport 3.0t trims in rear-drive form. The rear-drive Red Sport 400 takes the RS-R Sports-i XLIN144M, and cars fitted with Dynamic Digital Suspension have their own RS-R Best-i Active kit, so the trim decides which kit to order.

How much lower will the Q50 RWD sit on the RS-R Sports-i Coilovers for V37?

At the RS-R preset the Sports-i Coilovers for V37 kit sets the Q50 RWD about 35mm to 40mm lower at both the front and the rear. RS-R recommends minus 15mm to minus 55mm at the front and minus 10mm to minus 50mm 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 Q50 RWD?

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 Q50 RWD 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 Q50 RWD dampers be rebuilt when they wear?

Yes. RS-R assembles the Sports-i range in-house in Japan, so the dampers on this Q50 RWD kit can be overhauled to restore their original damping rather than replaced. RS-R USA covers the kit for 1 year or 12,000 miles from purchase, and Bulletproof Automotive handles any warranty claim with RS-R for the owner.

Should the RS-R coilovers on the Q50 RWD be installed by a shop?

It is the safer choice. Fitting coilovers involves the suspension mounts, hubs and brake lines, and the Q50 RWD 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.

Description

Additional Info

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Description

RS-R Sports-i Coilovers for V37 Infiniti Q50 3.7 / 3.0t RWD (2014-2024)

RS-R’s Sports-i Coilovers for V37 Infiniti Q50 3.7 / 3.0t RWD (2014-2024) cover the rear-drive Q50 3.7 of 2014 and 2015 and the non-Red Sport 3.0t trims of 2016 to 2024. RS-R pairs a 10.0 kg/mm front spring with a 5.0 kg/mm rear, monotube dampers with 36 steps of adjustment at each end, and a preset about 35mm to 40mm lower front and rear. The Q50 sits lower and handles with more poise on a winding road.

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: 10.0 kg/mm
Spring rate, rear: 5.0 kg/mm
Damping adjustment: 36 steps front and rear
Preset ride height, front: -35mm to -40mm (-1.4inch to -1.6inch)
Preset ride height, rear: -35mm to -40mm(-1.4inch to -1.6inch)
Maximum adjustment, front: +10mm to -85mm (+0.4inch to -3.3inch)
Maximum adjustment, rear: -5mm to -105mm (-0.2inch to -4.1inch)
Warranty: 1 year or 12,000 miles from purchase

What’s Included

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

Applications

Infiniti Q50 RWD: V37 | 2014-2015 3.7, 2016-2024 3.0t non-Red Sport trims

Notes

The Sports-i Coilovers for V37 kit uses manual dampers adjusted at each corner
The Red Sport 400 RWD kit is the RS-R Sports-i Coilovers for V37 Infiniti Q50 Red Sport 400 RWD (2016-2024); the AWD kit for these trims is the RS-R Sports-i Coilovers for V37 Infiniti Q50 3.7 / 3.0t AWD (2014-2024)
A wheel alignment is needed after installation and after any ride height change

Frequently Asked Questions

Does this Q50 kit fit the Red Sport 400? No. RS-R lists XLIN122M for the Q50 3.7 and the non-Red Sport 3.0t trims in rear-drive form. The rear-drive Red Sport 400 takes the RS-R Sports-i XLIN144M, and cars fitted with Dynamic Digital Suspension have their own RS-R Best-i Active kit, so the trim decides which kit to order.
How much lower will the Q50 RWD sit on the RS-R Sports-i Coilovers for V37? At the RS-R preset the Sports-i Coilovers for V37 kit sets the Q50 RWD about 35mm to 40mm lower at both the front and the rear. RS-R recommends minus 15mm to minus 55mm at the front and minus 10mm to minus 50mm 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 Q50 RWD? 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 Q50 RWD 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 Q50 RWD dampers be rebuilt when they wear? Yes. RS-R assembles the Sports-i range in-house in Japan, so the dampers on this Q50 RWD kit can be overhauled to restore their original damping rather than replaced. RS-R USA covers the kit for 1 year or 12,000 miles from purchase, and Bulletproof Automotive handles any warranty claim with RS-R for the owner.
Should the RS-R coilovers on the Q50 RWD be installed by a shop? It is the safer choice. Fitting coilovers involves the suspension mounts, hubs and brake lines, and the Q50 RWD 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 V37 Infiniti Q50 3.7 / 3.0t RWD (2014-2024) [XLIN122M]

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RS-R Sports-i Coilovers for V37 Infiniti Q50 3.7 / 3.0t RWD (2014-2024)

Features

Specifications

What’s Included

Applications

Notes

Frequently Asked Questions

About RS-R

Reviews