What is the difference between the NTR-R1 and the NTR-R3?

The NTR-R1 uses combined 2-way adjustment with 24 clicks controlling both compression and rebound through a single circuit. The Nitron NTR-R3 coilover for the WRX separates those functions entirely, with 16 clicks of high speed compression, 26 clicks of low speed compression, and 24 clicks of rebound adjusted independently. The R3 gives significantly more range when dialing the car in across different circuits and conditions.

How do the three damping circuits on the NTR-R3 work together when setting the car up?

On the Nitron NTR-R3 coilover for the WRX, low speed compression governs body control through weight transfer, braking, and steering inputs, high speed compression handles sharp hits like curbs and surface changes, and rebound controls how the spring releases. Because they adjust on separate circuits, you can firm up one without forcing a change in the others, which is what makes the R3 worth its range on a developing setup.

Can the Nitron NTR-R3 coilover for the WRX be revalved or adjusted after purchase, and are custom spring rates available?

Yes on both. Every Nitron NTR-R3 coilover WRX kit is fully serviceable and can be revalved or rebuilt by Nitron. Custom spring rates are available at the time of order; contact us directly before ordering if your intended use or setup calls for something outside the standard specification.

Description

Additional Info

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BP PRICING DIFFERENCE

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Description

Nitron NTR-R3 Coilover Kit for GEF / GHF / GRx / GVx Subaru Impreza WRX and WRX STi

The Nitron NTR-R3 Coilover WRX kit is built for owners who want to extract everything the 2008-2014 Impreza WRX and STi chassis has to give once the factory dampers stop keeping up. The GE, GH, GR, and GV cars respond directly to a serious damper, and the Nitron NTR-R3 coilover for the WRX is exactly that. Independent 3-way adjustment splits high and low speed compression from rebound, giving you the latitude to set the car up properly for one track and change it meaningfully for the next. At the heart of the Nitron NTR-R3 is a large diameter piston paired with an ultra-strong piston rod, which is what delivers the control and feedback a developing setup on the WRX or STi leans on. Piggyback reservoirs front and rear keep that adjustment within easy reach without complicating the install. The R3 platform holds lap records across a broad span of international motorsport, and every Nitron NTR-R3 coilover for the WRX is built to order, custom sprung, and fully serviceable.

Unique Technology

Every Nitron shock is built from precision components that have already cleared a full design and development cycle by the time they reach final assembly. The modular construction lets engineers treat each application on its own merits without giving ground on how parts are made or how they work together under load. Each piece is machined to tight tolerances and checked individually by trained technicians, with that quality control woven through the whole process rather than bolted on at the end. New materials, finishes, and processes are validated thoroughly before they reach production, and proprietary Nitron technologies run throughout, producing shocks that consistently stand up to the competition on road and track alike. That’s the engineering standard behind every Nitron NTR-R3 coilover, and the standard the brand has carried since 1998.
- 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 take a generic damper and make it fit the 2008-2014 WRX and STi; they develop one specifically for it. The Nitron NTR-R3 coilover for the WRX gets its own dedicated process, with components, spring rates, and damping characteristics decided by the GE, GH, GR, and GV platform itself rather than pulled from something close enough to pass. The geometry, weight distribution, and suspension travel of these chassis inform the design from the outset instead of being patched in later. That’s what separates suspension that works with a car from suspension that was actually developed for it.

Features

Piggyback 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, and top mounts
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: Piggyback
Rear Suspension Type: OEM
Droplinks Included: No

Applications

Subaru Impreza WRX: GEF, GHF, GRF, GVF | 2008-2014
Subaru Impreza WRX STi: GRB, GVB | 2008-2014

Other Suspension Kits for 2008-2014 WRX / WRX STi

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

What is the difference between the NTR-R1 and the NTR-R3? The NTR-R1 uses combined 2-way adjustment with 24 clicks controlling both compression and rebound through a single circuit. The Nitron NTR-R3 coilover for the WRX separates those functions entirely, with 16 clicks of high speed compression, 26 clicks of low speed compression, and 24 clicks of rebound adjusted independently. The R3 gives significantly more range when dialing the car in across different circuits and conditions.
How do the three damping circuits on the NTR-R3 work together when setting the car up? On the Nitron NTR-R3 coilover for the WRX, low speed compression governs body control through weight transfer, braking, and steering inputs, high speed compression handles sharp hits like curbs and surface changes, and rebound controls how the spring releases. Because they adjust on separate circuits, you can firm up one without forcing a change in the others, which is what makes the R3 worth its range on a developing setup.
Can the Nitron NTR-R3 coilover for the WRX be revalved or adjusted after purchase, and are custom spring rates available? Yes on both. Every Nitron NTR-R3 coilover WRX kit is fully serviceable and can be revalved or rebuilt by Nitron. Custom spring rates are available at the time of order; contact us directly before ordering if your intended use or setup calls for something outside the standard specification.

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 GEF / GHF / GRx / GVx Subaru Impreza WRX and WRX STi [NTCSU012R3]

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Nitron NTR-R3 Coilover Kit for GEF / GHF / GRx / GVx Subaru Impreza WRX and WRX STi

Unique Technology

Bespoke Engineering

Features

Specifications

Applications

Other Suspension Kits for 2008-2014 WRX / WRX STi

Notes

Frequently Asked Questions

About Nitron Suspension

Reviews