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NITRON NTR-R1 COILOVER KIT FOR E90 / E92 BMW 3 SERIES [NTCBM024R1]

Name: NITRON NTR-R1 COILOVER KIT FOR E90 / E92 BMW 3 SERIES [NTCBM024R1]
SKU: NTCBM024R1
Availability: InStock

SKU: NTCBM024R1

Nitron Suspension

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OEM-quality fitment for precise installation.

Sourced from certified, top-tier automotive brands.

Nitron NTR-R1 Coilover Kit for E90 / E92 BMW 3 Series

The E90 and E92 BMW 3 Series sit on a platform that’s well proven in both road and motorsport environments, but the factory suspension was developed around a wide range of drivers and conditions rather than the precision a serious build requires. The Nitron NTR-R1 coilover kit for the E90 and E92 closes that gap with precision-engineered, combined 2-way damping adjustment drawn directly from the R3 race platform, sharing core components with a kit built for professional competition. Coilover and divorced rear suspension configurations are both available to suit different build requirements. There’s no remote canister to package around, and every unit is individually hand-built with ultra-low friction components that deliver consistent, fade-resistant damping from the street to the circuit. Hard-anodized titanium finish parts and high-grade materials keep corrosion out and weight in check, and with each kit custom built, custom sprung, and fully serviceable, it’s an investment that holds up well beyond a single season.

Coilover vs Divorced Rear Suspension

The E90 and E92 NTR-R1 is available with two rear suspension configurations depending on how the car is being built. The coilover setup combines the spring and damper into a single unit, keeping things compact and straightforward for road and general track use. The divorced configuration separates the spring and damper, allowing each to be positioned and tuned independently; this is the preferred approach for dedicated race builds where maximizing suspension geometry and setup flexibility matters more than packaging simplicity. Nitron offers both to make sure the R1 works with the build rather than against it.

Unique Technology

Every Nitron shock is built from precision components that go through a thorough design and development process before reaching final assembly. The modular construction gives engineers the flexibility to approach each application properly, without compromising on how individual parts are made or how they perform together under load. Components are machined to tight tolerances and inspected one by one by trained technicians throughout production, not just at the end. New materials, finishes, and processes are validated extensively before adoption, with proprietary Nitron technologies integrated throughout to produce shocks that consistently hold up against the competition on road and track. That engineering standard is what the brand has been built on 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 adapt a generic damper to fit the E90 and E92. Every application goes through a dedicated development process, with components, spring rates, and damping characteristics engineered around the specific platform rather than the category it belongs to. Geometry, weight distribution, and suspension travel are factored into the design from the start, not compensated for after the fact. The result is a kit built for the E90 and E92 specifically, not one that was built broadly and happens to fit.

Features

Coilover or divorced rear suspension types
Internal reservoir type
2-way combined adjustment
Full alloy body
Preload adjuster
Combined 24 clicks of adjustment
Nitrogen gas charged
Includes droplinks
Precision bearing spacers supplied as required
Consists of 4 coilover assemblies and top mounts
Hand made to order

Specifications

Coilover Type: NTR-R1
Adjustment Type: 2-way combined
Adjustment: 24 clicks combined
Rear Suspension Types:
- Coilover
- Divorced
Droplinks Included: Yes
Recommended Spring Rates:
- FRS – Fast Road Spec:
  - Front: 685lbs/inch (120N/mm)
  - Rear:
    - Coilover: 400lbs/inch (70N/mm)
    - Divorced: 685lbs/inch (120N/mm)
- TDS – Track Day Spec:
  - Front: 799lbs/inch (140N/mm)
  - Rear:
    - Coilover: 514lbs/inch (90N/mm)
    - Divorced: 799lbs/inch (140N/mm)

Applications

BMW 316i: E90, E92 | 2006-2011
BMW 318i: E90, E92 | 2006-2012
BMW 320i: E90, E92 | 2006-2012
BMW 320si: E90, E92 | 2006-2007
BMW 323i: E90, E92 | 2006-2010
BMW 325i: E90, E92 | 2006-2012
BMW 328i: E90, E92 | 2006-2011
BMW 330i: E90, E92 | 2006-2011
BMW 335i: E90, E92 | 2006-2012

Other Suspension Kits for E90 / E92 3 Series

NTR-R3 Coilover Kit

Notes

Not compatible on E91 Estate or E93 Convertible models, Coupe and Sedan only
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

At what point does the divorced rear configuration make more sense than the coilover setup on the E90 and E92? When the build is moving toward dedicated circuit use and geometry optimization becomes a priority over installation simplicity. The divorced setup allows the spring and damper to be positioned and adjusted independently, which opens up setup options that a coilover configuration physically can’t offer. For road use or occasional track days, the coilover setup covers everything needed without the added complexity.
Why are the divorced rear spring rates so much stiffer than the coilover rates on the E90 and E92? The divorced configuration runs a significantly stiffer rear spring because the spring and damper are no longer working as a combined unit. With each component positioned independently, the spring rate needs to be higher to achieve the same wheel rate and chassis response. Running coilover spring rates in a divorced setup would result in an under-sprung rear end that doesn’t respond correctly under load.

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.

Choose Body Style	E90 Sedan, E92 Coupe

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We want you to feel confident before making your purchase. Here are a few important details to help you better understand this product and how it fits into your space.

Please review the product dimensions carefully to ensure the right fit for your space
Color may vary slightly due to lighting and screen settings
Materials and finishes are selected for both durability and visual appeal
Some items may require simple assembly upon delivery
Perfect for both everyday use and long-term comfort

If you have any questions about this product, feel free to reach out to our support team. We're here to help you make the right choice.

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Product Size Guide

Please refer to the general size reference below to better understand how this product may fit into your space. Dimensions may vary slightly depending on the design and materials.

Category	Small	Medium	Large
Decor & Accessories	Up to 10″	10″ – 20″	20″+
Tables	Up to 30″	30″ – 60″	60″+
Seating	1 Seater	2–3 Seater	4+ Seater
Storage Units	Compact	Standard	Large Capacity
Lighting	Small Fixture	Standard Fixture	Large Fixture

Note: For exact product dimensions, please refer to the specifications section above. This guide is intended as a general reference only.

NITRON NTR-R1 COILOVER KIT FOR E90 / E92 BMW 3 SERIES [NTCBM024R1]

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NITRON NTR-R1 COILOVER KIT FOR E90 / E92 BMW 3 SERIES [NTCBM024R1]