What does 3-way adjustment change on a mid-engined S3 Exige S?

The Nitron S3 Exige S NTR-R3 CupSport lets you control body movement separately from how the car handles sharp hits. Low-speed compression and rebound manage pitch under braking and roll through long corners. High-speed compression manages curbs and bumps. You can sharpen turn-in and braking stability without making the Exige skittish over curbing.

Who is the Nitron S3 Exige S NTR-R3 CupSport kit for?

The Nitron S3 Exige S NTR-R3 CupSport is built for S3 Exige S owners who run frequent track days or club competition and still drive the car to the event. Its valving is balanced for compliance over uneven pavement. The Nitron RacePro 3 is the full-race competition kit, built for dedicated race cars that no longer need to work on the road.

Where do the reservoirs go on the Nitron S3 Exige S NTR-R3 CupSport?

The Nitron S3 Exige S NTR-R3 CupSport 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 right angle, which simplifies routing in the Exige’s tight packaging. Plan the reservoir locations before installation so the compression adjusters stay easy to reach.

Does the Nitron S3 Exige S NTR-R3 CupSport come with mounting brackets?

Yes. Mounting brackets are included with every Nitron S3 Exige S NTR-R3 CupSport kit, so the coilovers fit the double wishbone suspension without sourcing extra hardware. Everything needed to mount the dampers arrives together, which keeps the install simple.

Can the Nitron S3 Exige S NTR-R3 CupSport be rebuilt between seasons?

Yes. Every Nitron S3 Exige S NTR-R3 CupSport damper is fully serviceable and rebuildable, including revalving and spring changes. Many track-focused Exige owners have their dampers refreshed over the winter, and revalving makes sense when moving to slicks, adding aero or changing the type of events the car runs.

Description

Additional Info

Shipping policy

BP PRICING DIFFERENCE

Reviews

Product Inquiry

Description

Nitron NTR-R3 CupSport Coilover Kit for S3 Lotus Exige S

At some point a road-registered S3 Exige S becomes a track car that only occasionally sees the road. When that happens, a single damping adjuster no longer gives you enough to work with. The Nitron S3 Exige S NTR-R3 CupSport coilover kit is built for that stage of ownership. It’s a dual-purpose setup for drivers who run frequent track days or club competition but still drive the car to the event. Each corner gets independent adjustment of rebound, low-speed compression and high-speed compression, so you can sharpen how the Exige responds to steering and braking without making it harsh over curbs. A mid-engined car this light shifts its weight quickly. Low-speed compression controls how much the body pitches into a braking zone and rolls through a long corner. High-speed compression decides whether the car rides over a curb or gets kicked off line by it. Nitron balances the CupSport valving for road and track use. It gives up a small amount of outright race stiffness, and in exchange the Exige stays composed over uneven pavement and on the drive home. Hose-mounted reservoirs at both ends bring the compression adjusters within easy reach. Mounting brackets are included, so the Nitron S3 Exige S NTR-R3 CupSport installs on the double wishbone suspension without hunting down extra hardware.

Specialized Bi-Axis Hose Fittings

Packaging is tight at both ends of an Exige, and hose reservoirs front and rear mean four hoses that each need a clean route past bodywork, cooling plumbing and moving suspension. Nitron’s exclusive Bi-Axis fittings pivot on two planes where each hose leaves the damper. That lets every hose on the Nitron S3 Exige S NTR-R3 CupSport start out pointing in the direction it needs to go, rather than being bent hard to reach its reservoir. Routing is simpler at both ends, and the hoses stay clear of anything they could rub against through full suspension travel.

Unique Technology

The Nitron NTR-R3 has won races and set lap records across international motorsport, and its design centers on a large-diameter piston and an ultra-strong piston rod. A bigger piston pushes more oil through the valving for each movement, so every adjuster click makes a change you can actually feel. When you’re refining a car that already has huge mechanical grip, that precision lets you fix a handling problem one adjuster at a time instead of guessing. The hose-mounted reservoirs add oil volume away from the damper body, and that helps the Nitron S3 Exige S NTR-R3 CupSport keep consistent damping as heat builds through a long session on sticky tires. The high- and low-speed compression adjusters sit on the reservoirs and work independently.
- 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 S3 Exige S NTR-R3 CupSport kit is hand-built after the order is placed. Springs and valving are specified for a car that does serious track and club competition work but still drives on public roads. That covers a lot of S3 Exige S owners. Their cars run Cup-style tires, spend most weekends at the circuit and get driven there and back rather than trailered. That is exactly where the CupSport’s balanced valving pays off. Hard-anodized components and titanium hardware keep weight off a car that was designed around low mass, and they resist corrosion through wet track days and long winter layups. Every Nitron NTR-R3 damper can be fully serviced and rebuilt. Revalving or a spring change keeps the kit matched to the car as tires, aero or the type of events it runs change over the seasons.

Features

Hose reservoir 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, hoses, and mounting brackets
Hand made to order

Specifications

Coilover Type: NTR-R3 CupSport
Adjustment Type: 3-way independent
Adjustment: 16 clicks of high compression / 26 clicks of low compression / 24 clicks of rebound
Reservoir Type: Hose
Mounting Brackets: Included
Recommended Spring Rates:
- Front: 850lbs/inch (149N/mm)
- Rear: 1300lbs/inch (228N/mm)

Applications

Lotus Exige S: S3 | 2012-2021

Other Suspension Kits for S3 Lotus Exige S

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

What does 3-way adjustment change on a mid-engined S3 Exige S? The Nitron S3 Exige S NTR-R3 CupSport lets you control body movement separately from how the car handles sharp hits. Low-speed compression and rebound manage pitch under braking and roll through long corners. High-speed compression manages curbs and bumps. You can sharpen turn-in and braking stability without making the Exige skittish over curbing.
Who is the Nitron S3 Exige S NTR-R3 CupSport kit for? The Nitron S3 Exige S NTR-R3 CupSport is built for S3 Exige S owners who run frequent track days or club competition and still drive the car to the event. Its valving is balanced for compliance over uneven pavement. The Nitron RacePro 3 is the full-race competition kit, built for dedicated race cars that no longer need to work on the road.
Where do the reservoirs go on the Nitron S3 Exige S NTR-R3 CupSport? The Nitron S3 Exige S NTR-R3 CupSport 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 right angle, which simplifies routing in the Exige’s tight packaging. Plan the reservoir locations before installation so the compression adjusters stay easy to reach.
Does the Nitron S3 Exige S NTR-R3 CupSport come with mounting brackets? Yes. Mounting brackets are included with every Nitron S3 Exige S NTR-R3 CupSport kit, so the coilovers fit the double wishbone suspension without sourcing extra hardware. Everything needed to mount the dampers arrives together, which keeps the install simple.
Can the Nitron S3 Exige S NTR-R3 CupSport be rebuilt between seasons? Yes. Every Nitron S3 Exige S NTR-R3 CupSport damper is fully serviceable and rebuildable, including revalving and spring changes. Many track-focused Exige owners have their dampers refreshed over the winter, and revalving makes sense when moving to slicks, adding aero or changing the type of events the car runs.

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.

Reviews

There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.

Product Inquiry

First Name (*required)

Last Name (*required)

Your E-Mail (*required)

Telephone Number (*required)

Country (*required)

Vehicle Year / Make / Model (*required)

Please Explain What do you want to do with your vehicle

Additional Information (optional)

I agree to the terms & conditions and privacy policy and to have Bulletproof Automotive LLC contact me for promotion, marketing and other purposes via email, phone or SMS message.

Nitron NTR-R3 CupSport Coilover Kit for S3 Lotus Exige S [NTCLO023_CUP3]

Guaranteed Safe Checkout

Nitron NTR-R3 CupSport Coilover Kit for S3 Lotus Exige S

Specialized Bi-Axis Hose Fittings

Unique Technology

Bespoke Engineering

Features

Specifications

Applications

Other Suspension Kits for S3 Lotus Exige S

Notes

Frequently Asked Questions

About Nitron Suspension

Reviews