Why do firmer springs help a Lotus 340R on track?

With sticky tires, a 340R rolls enough in long corners to pull the camber away from where the tires grip best. The Nitron 340R NTR-R1 ClubSport uses firmer spring rates than the FastRoad kit, so the body moves less and the double wishbone geometry stays closer to its static settings. That gives the tires a more even contact patch and more consistent grip.

Who should choose the Nitron 340R NTR-R1 ClubSport over the FastRoad?

The Nitron 340R NTR-R1 ClubSport suits Lotus 340R owners who spend more time on circuit than on the road, run sticky tires or want tighter body control. Both kits use the same Nitron NTR-R1 damper with combined 2-way adjustment. The ClubSport adds slightly stiffer springs, while the FastRoad keeps softer rates for road compliance.

Does the Nitron Lotus 340R NTR-R1 ClubSport require mounting brackets?

No. The Nitron Lotus 340R NTR-R1 ClubSport fits the car’s double wishbone suspension directly, with no mounting brackets required. The install stays simple, and the car’s original mounting points are left exactly as they are, which matters on a car as rare as the 340R.

Can you soften the Nitron NTR-R1 ClubSport for the drive to the track?

Yes. Each Nitron NTR-R1 damper has a single adjuster that sets bump and rebound together, so a few clicks per corner take the edge off for the road. You can firm the 340R back up in the paddock without balancing separate damping circuits, and back off again for the drive home.

Can the Nitron 340R NTR-R1 ClubSport be serviced and revalved?

Yes. Every Nitron 340R NTR-R1 ClubSport damper is fully serviceable, so it can be rebuilt after a season of track days, revalved or fitted with different springs. If the Lotus 340R moves toward competition or back toward road use, the setup can be updated to match.

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Description

Nitron NTR-R1 ClubSport Coilover Kit for 111 Lotus 340R

On sticky tires, a 340R on track rolls enough to change how its tires meet the road. As the body leans, the wishbones move through their arc, and the camber Lotus designed into the geometry drifts away from where the tire works best. The Nitron 340R NTR-R1 ClubSport coilover kit stiffens that up. Its spring rates are a step firmer than the FastRoad kit’s, so the body moves less, the geometry stays closer to its static settings and the tires keep a more even contact patch through long, loaded corners. The car is still usable on the road, but the ClubSport is clearly set up for owners whose 340R sees more circuit laps than road miles. One adjuster per corner sets bump and rebound together. You can turn it softer for the drive to the track and firmer once you get there. No mounting brackets are needed, so the Nitron Lotus 340R NTR-R1 ClubSport goes straight into the double wishbone suspension.

Unique Technology

The Nitron NTR-R1 comes from Nitron’s race program and shares a large share of its internals with the NTR-R3 that Nitron races internationally. There’s no remote canister, which keeps every damper compact and tidy alongside the 340R’s exposed wishbones. Firmer springs only work if the dampers can control them. The low-friction internals of the Nitron NTR-R1 respond quickly to the higher loads the ClubSport springs produce, so the tires stay planted over curbs and bumpy braking zones instead of skipping. Fade resistance matters here too. A car this light on sticky rubber can lap hard for a long time, and the Nitron 340R NTR-R1 ClubSport holds its damping from the first lap of a session to the 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

Every Nitron 340R NTR-R1 ClubSport kit is assembled by hand to order, with springs and valving matched to the Lotus 340R and a track-leaning brief. That suits owners who drive to the circuit, run a full day on sticky tires and drive home again, as well as cars that are trailered to every event. Hard-anodized and titanium-finish components keep weight off a car built around minimal mass, and they protect against corrosion on an open car that gets caught in the rain at track days. On a car this rare, the suspension needs to be something you maintain rather than throw away. Each Nitron NTR-R1 damper can be fully serviced and revalved, and the springs can be changed. If the car’s use moves further toward competition, or back toward the road, the setup can move with it.

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 340R: 111 | 2000

Other Suspension Kits for Lotus 340R

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

Why do firmer springs help a Lotus 340R on track? With sticky tires, a 340R rolls enough in long corners to pull the camber away from where the tires grip best. The Nitron 340R NTR-R1 ClubSport uses firmer spring rates than the FastRoad kit, so the body moves less and the double wishbone geometry stays closer to its static settings. That gives the tires a more even contact patch and more consistent grip.
Who should choose the Nitron 340R NTR-R1 ClubSport over the FastRoad? The Nitron 340R NTR-R1 ClubSport suits Lotus 340R owners who spend more time on circuit than on the road, run sticky tires or want tighter body control. Both kits use the same Nitron NTR-R1 damper with combined 2-way adjustment. The ClubSport adds slightly stiffer springs, while the FastRoad keeps softer rates for road compliance.
Does the Nitron Lotus 340R NTR-R1 ClubSport require mounting brackets? No. The Nitron Lotus 340R NTR-R1 ClubSport fits the car’s double wishbone suspension directly, with no mounting brackets required. The install stays simple, and the car’s original mounting points are left exactly as they are, which matters on a car as rare as the 340R.
Can you soften the Nitron NTR-R1 ClubSport for the drive to the track? Yes. Each Nitron NTR-R1 damper has a single adjuster that sets bump and rebound together, so a few clicks per corner take the edge off for the road. You can firm the 340R back up in the paddock without balancing separate damping circuits, and back off again for the drive home.
Can the Nitron 340R NTR-R1 ClubSport be serviced and revalved? Yes. Every Nitron 340R NTR-R1 ClubSport damper is fully serviceable, so it can be rebuilt after a season of track days, revalved or fitted with different springs. If the Lotus 340R moves toward competition or back toward road use, the setup 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 ClubSport Coilover Kit for 111 Lotus 340R [NTCLO015_CS]

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Nitron NTR-R1 ClubSport Coilover Kit for 111 Lotus 340R

Unique Technology

Bespoke Engineering

Features

Specifications

Applications

Other Suspension Kits for Lotus 340R

Notes

Frequently Asked Questions

About Nitron Suspension

Reviews