Why choose the Nitron Fiesta ST NTR-R1 over lowering springs with factory dampers?

The factory Fiesta ST dampers weren’t valved for the lower ride height or the stiffer rates of aftermarket lowering springs. That mismatch often causes bottoming and a bouncy ride. The Nitron Fiesta ST NTR-R1 designs the springs and dampers together, so the car can sit lower and stay controlled without crashing over speed humps.

What does the coilover rear on the Nitron Fiesta ST NTR-R1 change?

The Nitron Fiesta ST NTR-R1 moves the rear spring onto the damper body, making the rear a full coilover. That lets you adjust ride height and spring preload directly at the rear dampers. You can set the car’s rake and corner weights accurately, instead of being limited to whatever height the rear spring gives you.

Will the Nitron NTR-R1 keep the Fiesta ST’s lift-off rotation?

Yes, and you can tune it. With the Nitron NTR-R1 single adjuster at each corner, firming or softening the rear relative to the front changes how readily the Fiesta ST rotates when you lift off the throttle. Because every kit is sprung and valved to order, you can also ask for a baseline setup that suits how you drive.

Are top plates included with the Nitron Fiesta ST NTR-R1 kit?

Yes. Nitron top plates come with every Nitron Fiesta ST NTR-R1 kit, so the front struts install without reusing the factory mounts. Original mounts on a well-used ST are often soft or noisy by now, and new top plates make sure that play doesn’t dull the steering or hide changes you make at the adjusters.

Is the Nitron Fiesta ST NTR-R1 suitable for daily driving?

Yes. Nitron builds the NTR-R1 for road and track use, and its low-friction internals help it absorb small bumps instead of passing them into the cabin. The corrosion-resistant hard-anodized and titanium-finish parts handle winter roads. Ask for a road-focused spring and valving spec when ordering, and the Fiesta ST can ride well every day.

Can the Nitron Fiesta ST NTR-R1 be rebuilt or revalved later?

Yes. Every Nitron Fiesta ST NTR-R1 damper can be fully serviced, including rebuilds and revalving. If you move to semi-slick tires, add power or start spending more time on track, the dampers and springs can be updated to match.

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Description

Nitron NTR-R1 Coilover Kit for B299 Ford Fiesta ST

Plenty of Fiesta STs end up on lowering springs paired with the original dampers, and the combination rarely works well. The factory dampers were never valved for the shorter travel or the higher rates. The result is a car that bottoms out over speed humps, bounces on undulating roads and loses the playful balance that made the ST worth buying. The Nitron Fiesta ST NTR-R1 coilover kit fixes that by designing the springs and dampers together from the start. The rear converts to a full coilover, with the spring wrapped around the damper, so ride height can be set at both ends of the car instead of only at the front. A single adjuster at each corner sets bump and rebound together. That makes it simple to keep the ST’s eager lift-off rotation on a back road and then firm things up for a track day. The front struts go in with new top plates, and the Nitron Fiesta ST NTR-R1 gives the car the control a lowering spring alone never could.

Unique Technology

Nitron developed the NTR-R1 from its race suspension program, and much of what sits inside each damper is shared with the NTR-R3 that Nitron runs in international motorsport. The NTR-R1 leaves off the remote canister, so each corner of the Fiesta stays compact and free of hoses. Very low internal friction lets the damper start working the moment the wheel moves. On a car as light as the Fiesta ST, that keeps the tires following the road surface instead of skipping over it. The Nitron NTR-R1 also resists fade. Its damping stays consistent as the oil heats up, so a car balanced on its first lap behaves the same way on its last.
- 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 stock a ready-made Fiesta ST kit and pull one off a shelf. Each Nitron Fiesta ST NTR-R1 kit is assembled by hand after the order comes in, with springs and valving picked for that specific car. A daily-driven ST on standard tires needs a very different setup from a track-day car on semi-slicks or a club racer with a cage and stripped interior, and Nitron builds for that difference. Hard-anodized and titanium-finish components keep unsprung and overall weight down and hold off corrosion, which helps on a car many owners drive straight through winter. The kit can also keep pace as the car develops. Every Nitron NTR-R1 damper can be fully serviced and revalved, so tire changes, tuning upgrades or more track time can each be met with a setup to suit.

Features

Coilover rear suspension type
Internal reservoir type
2-way combined adjustment
Full alloy body
Preload adjuster
Combined 24 clicks of adjustment
Nitrogen gas charged
Precision bearing spacers supplied as required
Consists of 4 coilovers, droplinks, and top mounts
Hand made to order

Specifications

Coilover Type: NTR-R1
Adjustment Type: 2-way combined
Adjustment: 24 clicks combined
Rear Suspension Types: OEM
Droplinks Included: Yes
Recommended Spring Rates:
- FRS – Fast Road Spec:
  - Front: 343lbs/inch (60N/mm)
  - Rear: 200lbs/inch (35N/mm)
- TDS – Track Day Spec:
  - Front: 513lbs/inch (90N/mm)
  - Rear: 400lbs/inch (70N/mm)

Applications

Ford Fiesta ST: B299 | 2013-2019

Other Suspension Kits for B299 Ford Fiesta ST

NTR-R3 Coilover Kit

Notes

Custom spring rates also available
Please feel free to 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.
Precision bearing spacers supplied as required

Frequently Asked Questions

Why choose the Nitron Fiesta ST NTR-R1 over lowering springs with factory dampers? The factory Fiesta ST dampers weren’t valved for the lower ride height or the stiffer rates of aftermarket lowering springs. That mismatch often causes bottoming and a bouncy ride. The Nitron Fiesta ST NTR-R1 designs the springs and dampers together, so the car can sit lower and stay controlled without crashing over speed humps.
What does the coilover rear on the Nitron Fiesta ST NTR-R1 change? The Nitron Fiesta ST NTR-R1 moves the rear spring onto the damper body, making the rear a full coilover. That lets you adjust ride height and spring preload directly at the rear dampers. You can set the car’s rake and corner weights accurately, instead of being limited to whatever height the rear spring gives you.
Will the Nitron NTR-R1 keep the Fiesta ST’s lift-off rotation? Yes, and you can tune it. With the Nitron NTR-R1 single adjuster at each corner, firming or softening the rear relative to the front changes how readily the Fiesta ST rotates when you lift off the throttle. Because every kit is sprung and valved to order, you can also ask for a baseline setup that suits how you drive.
Are top plates included with the Nitron Fiesta ST NTR-R1 kit? Yes. Nitron top plates come with every Nitron Fiesta ST NTR-R1 kit, so the front struts install without reusing the factory mounts. Original mounts on a well-used ST are often soft or noisy by now, and new top plates make sure that play doesn’t dull the steering or hide changes you make at the adjusters.
Is the Nitron Fiesta ST NTR-R1 suitable for daily driving? Yes. Nitron builds the NTR-R1 for road and track use, and its low-friction internals help it absorb small bumps instead of passing them into the cabin. The corrosion-resistant hard-anodized and titanium-finish parts handle winter roads. Ask for a road-focused spring and valving spec when ordering, and the Fiesta ST can ride well every day.
Can the Nitron Fiesta ST NTR-R1 be rebuilt or revalved later? Yes. Every Nitron Fiesta ST NTR-R1 damper can be fully serviced, including rebuilds and revalving. If you move to semi-slick tires, add power or start spending more time on track, the dampers and springs can be updated to match.

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-R1 Coilover Kit for B299 Ford Fiesta ST [NTCFO014R1]

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Nitron NTR-R1 Coilover Kit for B299 Ford Fiesta ST

Unique Technology

Bespoke Engineering

Features

Specifications

Applications

Other Suspension Kits for B299 Ford Fiesta ST

Notes

Frequently Asked Questions

About Nitron Suspension

Reviews