How do the ClubSport springs on the Nitron Exige NTR-R1 help the S1's aero?

The firmer springs on the Nitron Exige NTR-R1 ClubSport limit pitch and squat as speed and load rise. The front splitter holds a consistent ride height and the rear wing works at its intended angle, so the car's aero balance stays predictable through fast corners.

What is the Nitron Exige NTR-R1 ClubSport like on the drive home from the track?

The Nitron Exige NTR-R1 ClubSport rides firmer than the FastRoad kit, but its low-friction dampers still soak up small bumps well. Turning the adjuster softer makes the drive home on public roads comfortable.

Is the Nitron Exige NTR-R1 ClubSport suited to sprints and hill-climbs?

Yes. Sprints and hill-climbs give you few runs and little time to experiment. The Nitron Exige NTR-R1 ClubSport's firm platform and single adjuster make it fast to set up, and its low-friction response keeps the tires working over the uneven surfaces those events often run on.

Do I need anything else to install the Nitron Exige NTR-R1 ClubSport?

No mounting brackets are needed. The Nitron Exige NTR-R1 ClubSport bolts to the factory mounting points. Droplinks are not included, and an alignment and corner weighting should follow installation.

Why doesn't the Nitron Exige NTR-R1 have separate bump and rebound adjusters?

Nitron designed the Nitron Exige NTR-R1 with a combined adjuster so that each change moves bump and rebound together in a balanced way. Setup stays quick and hard to get wrong, which suits track day and club-level use.

How often should Nitron Exige NTR-R1 ClubSport dampers be serviced?

It depends on how much track time the car sees. Cars on a busy calendar benefit from more frequent servicing. Every Nitron Exige NTR-R1 damper is fully serviceable, so the kit can be rebuilt to as-built condition rather than replaced.

Description

Additional Info

Shipping policy

BP PRICING DIFFERENCE

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Description

Nitron NTR-R1 ClubSport Coilover Kit for S1 Lotus Exige

The S1 Exige came from the factory with a front splitter, a wing on pylons and a fixed roof, and Lotus clearly meant it for the track. Owners who still use it that way, with regular track days, sprints or the occasional hill-climb, need suspension that can keep that aero working. The Nitron Exige NTR-R1 ClubSport kit pairs Nitron’s hand-built, race-derived dampers with firmer springs. Those springs hold the S1 at a steady attitude under braking, cornering and high-speed load. The splitter stays at a consistent height, the rear wing keeps working at the angle it was set to, and the tires hold a stable contact patch as the speed rises. A single adjuster at each corner of the Nitron Exige NTR-R1 sets bump and rebound together, so you can make changes between sessions quickly in the paddock. The kit bolts to the factory mounting points with no brackets needed.

Unique Technology

Nitron’s race department designed the NTR-R1, and the Nitron Exige NTR-R1 shares a large share of its internals with the NTR-R3 damper that Nitron fields in international motorsport. The gas charge is contained within each damper body. The kit has no external canister, so there are no hoses to snag on a curb strike or chafe against bodywork during a hard session. The dampers are mounted inverted to cut unsprung weight. With less mass at each hub, the tires can follow rapid changes in the surface instead of skipping across them. Friction inside the Nitron Exige NTR-R1 is kept extremely low, so damping force builds the moment the suspension moves. On track, that means the car settles immediately after a curb or a crest and stays calm on the way into the next corner. It also lets the firmer ClubSport springs ride over sharp ripples without losing grip. Heat doesn’t change the Nitron Exige NTR-R1’s damping much either, so the balance you have at the start of a session is still there at the checkered flag.
- 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 Exige NTR-R1 ClubSport kit is built by hand to order. The valving is developed to work with the firmer spring package and with the S1’s real use, whether that’s a busy track day calendar, timed sprints or hill-climb events. Nitron uses titanium and hard-anodized components throughout. They keep weight off each corner and resist corrosion when the car is trailered home wet or stored for the winter. Every Nitron Exige NTR-R1 ClubSport damper is fully serviceable, so a car that racks up track hours can have its dampers refreshed and returned to as-built condition rather than replaced. If your S1 runs slicks or upgraded aero, or you’re deciding between the ClubSport and FastRoad kits, contact us directly before ordering.

Features

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 coilover assemblies
Hand made to order

Specifications

Coilover Type: NTR-R1 ClubSport
Adjustment Type: 2-way combined
Adjustment: 24 clicks combined
Mounting Brackets: Not required
Recommended Spring Rates:
- Front: 450lbs/inch (79N/mm)
- Rear: 525lbs/inch (92N/mm)

Applications

Lotus Exige: S1 | 2000-2001

Other Suspension Kits for S1 Lotus Exige

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.
Precision bearing spacers supplied as required

Frequently Asked Questions

How do the ClubSport springs on the Nitron Exige NTR-R1 help the S1’s aero? The firmer springs on the Nitron Exige NTR-R1 ClubSport limit pitch and squat as speed and load rise. The front splitter holds a consistent ride height and the rear wing works at its intended angle, so the car’s aero balance stays predictable through fast corners.
What is the Nitron Exige NTR-R1 ClubSport like on the drive home from the track? The Nitron Exige NTR-R1 ClubSport rides firmer than the FastRoad kit, but its low-friction dampers still soak up small bumps well. Turning the adjuster softer makes the drive home on public roads comfortable.
Is the Nitron Exige NTR-R1 ClubSport suited to sprints and hill-climbs? Yes. Sprints and hill-climbs give you few runs and little time to experiment. The Nitron Exige NTR-R1 ClubSport’s firm platform and single adjuster make it fast to set up, and its low-friction response keeps the tires working over the uneven surfaces those events often run on.
Do I need anything else to install the Nitron Exige NTR-R1 ClubSport? No mounting brackets are needed. The Nitron Exige NTR-R1 ClubSport bolts to the factory mounting points. Droplinks are not included, and an alignment and corner weighting should follow installation.
Why doesn’t the Nitron Exige NTR-R1 have separate bump and rebound adjusters? Nitron designed the Nitron Exige NTR-R1 with a combined adjuster so that each change moves bump and rebound together in a balanced way. Setup stays quick and hard to get wrong, which suits track day and club-level use.
How often should Nitron Exige NTR-R1 ClubSport dampers be serviced? It depends on how much track time the car sees. Cars on a busy calendar benefit from more frequent servicing. Every Nitron Exige NTR-R1 damper is fully serviceable, so the kit can be rebuilt to as-built condition rather than replaced.

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 ClubSport Coilover Kit for S1 Lotus Exige [NTCLO011_CS]

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Nitron NTR-R1 ClubSport Coilover Kit for S1 Lotus Exige

Unique Technology

Bespoke Engineering

Features

Specifications

Applications

Other Suspension Kits for S1 Lotus Exige

Notes

Frequently Asked Questions

About Nitron Suspension

Reviews