How does 3-way adjustment help a short-wheelbase car like the Fiesta ST?

The Nitron Fiesta ST NTR-R3 lets you control pitch and roll separately from how the car handles bumps. Low-speed compression and rebound manage nose dive under braking and body roll on turn-in. High-speed compression manages curbs and sharp hits. You can make the ST flatter and more stable without making it harsh over rough tarmac.

Why does the Nitron Fiesta ST NTR-R3 use piggyback reservoirs instead of hose reservoirs?

Piggyback reservoirs mount directly on each damper body, so the Nitron Fiesta ST NTR-R3 needs no hoses or separate reservoir brackets. On a compact car with limited space at both ends, that keeps the install simple. The compression adjusters are still easy to reach, and the extra oil volume still helps keep damping consistent under heat.

What does the full coilover rear on the Nitron Fiesta ST NTR-R3 allow?

The Nitron Fiesta ST NTR-R3 mounts each rear spring around the damper body, the same as the front. That gives you ride height and spring preload adjustment directly at the rear dampers. You can set rake and corner weights accurately, which matters when you’re fine-tuning balance with independent 3-way damping.

Does the Nitron Fiesta ST NTR-R3 come with top plates?

Yes. Nitron top plates are included with every Nitron Fiesta ST NTR-R3 kit, so the front struts install without reusing the factory mounts. Worn original mounts can add play that hides small adjustments. Starting with new top plates means the changes you make at the adjusters show up clearly in how the car drives.

Should a Fiesta ST owner choose the Nitron NTR-R3 or the Nitron NTR-R1?

If the Fiesta ST is mainly a track or competition car, choose the Nitron NTR-R3. It adds independent rebound, low-speed compression and high-speed compression, plus piggyback reservoirs for more stable damping over long sessions. The Nitron NTR-R1 uses one combined adjuster and no reservoirs, which suits road driving and occasional track days.

Can the Nitron Fiesta ST NTR-R3 be rebuilt and revalved?

Yes. Every Nitron Fiesta ST NTR-R3 damper is fully serviceable and rebuildable, including revalving and spring changes. Track and race Fiesta STs are often revalved when moving to slicks, adding power or changing series, and a rebuild between seasons keeps the dampers performing as new.

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Description

Nitron NTR-R3 Coilover Kit for Zenos E10 / E10 S

Hill-climbs and sprints don’t give you warm-up laps. You get one run on a narrow, bumpy road or a temporary circuit, and the car has to be right from the start line. That’s the kind of driving the Nitron Zenos E10 NTR-R3 coilover kit is built for. Each corner has fully independent adjustment of rebound, low-speed compression and high-speed compression, so you can separate how the E10 handles weight transfer from how it copes with the surface. Low-speed compression controls pitch under braking and roll through quick direction changes. High-speed compression handles crests, potholes and sharp edges, which on a real hill-climb road can be the difference between staying on line and getting thrown off it. Hose-mounted reservoirs at both ends keep the compression adjusters easy to reach in the paddock, and the open bodywork makes that easier still. The rear follows the OEM suspension layout, and the Nitron E10 NTR-R3 bolts into the factory mounting points of the all-round double wishbone suspension.

Specialized Bi-Axis Hose Fittings

With reservoirs front and rear, the Zenos has four hoses that each need a clear route between the damper and reservoir. They have to stay clear of the wishbones, bodywork and anything else that moves as the suspension works. Nitron’s exclusive Bi-Axis fittings pivot on two planes where each hose leaves the damper. On the Nitron Zenos E10 NTR-R3, that lets every hose point toward its reservoir from the start, so it doesn’t need a tight bend to get there. Routing is simpler at both ends, and the hoses stay clear through full suspension travel and steering lock.

Unique Technology

The Nitron NTR-R3 has won races and set lap records across international motorsport. It is built around a large-diameter piston and an ultra-strong piston rod. A larger piston moves more oil through the valving with every movement of the wheel, so each adjuster click makes a change you can feel and repeat. That matters on a car as light and responsive as the Zenos, where you’re fine-tuning in small steps rather than big swings. The hose-mounted reservoirs add oil volume away from the damper body, so damping stays steady through a long track-day session as well as a short sprint run. Because high- and low-speed compression adjust independently at each reservoir, the Nitron Zenos E10 NTR-R3 lets you work on one handling trait at a time without disturbing the rest of the setup.
- 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

Each Nitron E10 NTR-R3 kit is built by hand after the order comes in, with springs and valving specified for the car’s competition brief. A hill-climb E10 on bumpy public-road courses wants something different from a circuit-focused E10 S on sticky tires, and Nitron sets up each kit accordingly. Hard-anodized components and titanium hardware keep weight down on a chassis designed around low mass, and they resist corrosion on an open car that is often out in wet paddocks and damp spring events. A low-volume car like the E10 also needs parts that can be looked after for years. Every Nitron NTR-R3 damper can be fully serviced and rebuilt, and it can be revalved for new tires, new events or a change in how the car is used.

Features

Hose reservoir type
OEM rear suspension type
16 clicks of high compression
26 clicks of low compression
24 clicks of rebound
Preload adjuster
3-way independent adjustment
Full alloy body
Consists of 4 coilovers, reservoirs, and hoses
Hand made to order

Specifications

Coilover Type: NTR-R3
Adjustment Type: 3-way independent
Adjustment: 16 clicks of high compression / 26 clicks of low compression / 24 clicks of rebound
Reservoir Type: Hose
Rear Suspension Type: OEM
Droplinks Included: No
Recommended Spring Rates:
- TDS – Track Day Spec:
  - Front: 450lbs/inch (79N/mm)
  - Rear: 600lbs/inch (105N/mm)

Applications

Zenos E10: 2015-2016
Zenos E10 S: 2015-2016

Other Suspension Kits for Zenos E10 / E10 S

NTR-R1 Coilover Kit

Notes

Custom spring rates also available, please 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

Frequently Asked Questions

Why is 3-way adjustment useful on a Zenos E10 for hill-climbs and sprints? Hill-climb and sprint courses are often bumpy, and you get no warm-up laps. The Nitron Zenos E10 NTR-R3 lets you set body control with low-speed compression and rebound, and set bump absorption separately with high-speed compression. You can keep the E10 flat under braking and through direction changes without crests and potholes throwing it off line.
How are the reservoirs mounted on the Nitron E10 NTR-R3? The Nitron E10 NTR-R3 uses hose-mounted reservoirs at both ends, each connected to its damper by a hose. Nitron’s Bi-Axis fittings let each hose leave the damper at the correct angle, so routing past the wishbones and bodywork stays clean. Plan the reservoir positions before installation so the compression adjusters are easy to reach in the paddock.
Does the Nitron Zenos E10 NTR-R3 fit the factory suspension mounts? Yes. The Nitron Zenos E10 NTR-R3 bolts into the factory mounting points of the all-round double wishbone suspension and keeps the OEM-type rear layout. The geometry Zenos developed stays as it is, so the install needs no fabrication and the car keeps its familiar balance with much finer damping control.
Should a Zenos owner choose the Nitron NTR-R3 or the Nitron NTR-R1? If the E10 is used mainly for competition or frequent track days, the Nitron NTR-R3 is the better choice. It adds independent rebound, low-speed compression and high-speed compression adjustment, plus remote reservoirs for stable damping. The Nitron NTR-R1 uses one combined adjuster and no reservoirs, which suits road driving and occasional track use.
Can the Nitron Zenos E10 NTR-R3 be rebuilt and revalved? Yes. Every Nitron Zenos E10 NTR-R3 damper is fully serviceable and rebuildable, including revalving and spring changes. Competition E10 owners often have their dampers refreshed over the winter, and revalving makes sense when changing tires or moving between hill-climb, sprint and circuit events.

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-R3 Coilover Kit for Zenos E10 / E10 S [NTCZE010R3]

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Nitron NTR-R3 Coilover Kit for Zenos E10 / E10 S

Specialized Bi-Axis Hose Fittings

Unique Technology

Bespoke Engineering

Features

Specifications

Applications

Other Suspension Kits for Zenos E10 / E10 S

Notes

Frequently Asked Questions

About Nitron Suspension

Reviews