BC Racing BR Series - BMW 3/4 Series F80 F82 M3 M4 (2014-2018) (3-Bolt Top Mount) (True Rear Coilover)
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BC Racing BR Series True Rear Coilovers – BMW F80 M3 / F82 M4
The BC Racing BR Series True Rear Coilovers for the BMW F80 M3 and F82 M4 are a versatile performance suspension upgrade designed for drivers looking for adjustable ride height, 30-way damping adjustment and a true rear coilover conversion.
Unlike the factory rear suspension layout, where the spring and damper are mounted separately, the True Rear configuration relocates the rear spring onto the damper to create a complete rear coilover assembly.
Combined with BC Racing’s monotube damper design and wide range of adjustment, the BR Series True Rear kit provides a flexible setup for fast-road, track and performance-focused F8X builds.
Why choose BC Racing BR Series True Rear for your F80 M3 or F82 M4?
The F80 M3 and F82 M4 are highly capable performance platforms, and the BR Series provides a strong balance between adjustability, performance and everyday usability.
The True Rear configuration changes the rear suspension from the factory-style divorced spring and damper arrangement to a complete coilover assembly.
This gives the rear suspension a more motorsport-style layout and provides greater scope to develop the setup around spring rates, tyres, alignment and intended use.
For fast-road and occasional track builds, the BR Series remains one of the most versatile options in the BC Racing range.
Key Features
- BC Racing BR Series True Rear coilovers
- BMW F80 M3 and F82 M4 application
- True rear coilover conversion
- Rear spring mounted around the damper
- Replaces the factory-style divorced rear spring arrangement
- 30-way damping adjustment
- Monotube damper design
- Adjustable ride height
- Rebuildable damper design
- Application-specific spring rates
- Custom spring-rate options available
- Adjustable top mounts where applicable
- Suitable for fast-road and track-focused applications
True Rear Coilover Conversion
The main difference between this kit and a conventional F80 M3 / F82 M4 coilover setup is the rear suspension configuration.
The factory rear suspension uses a divorced layout, with the spring mounted separately from the damper.
With the True Rear configuration, the rear spring is mounted concentrically around the damper to create a complete rear coilover assembly.
This provides a more conventional motorsport-style rear suspension layout and can make spring changes and suspension setup development more straightforward on track-focused cars.
BMW F80 M3 / F82 M4 Suspension Upgrade
The BR Series True Rear kit gives F80 M3 and F82 M4 owners significantly greater control over their suspension setup than standard dampers and springs.
Ride height and damping can be tailored to work alongside other chassis upgrades such as:
- Performance tyres
- Adjustable suspension arms
- Uprated anti-roll bars
- Polyurethane or solid bushes
- Chassis braces
- Performance alignment settings
For predominantly road-driven cars, the BR Series provides a wide range of adjustment without becoming unnecessarily complex.
For track-focused builds, the True Rear configuration provides a more specialised platform that can be developed around corner weights, spring rates and geometry.
30-Way Damping Adjustment
The BR Series provides 30 levels of damping adjustment, allowing the suspension response to be tailored to different driving conditions.
Softer settings can provide greater compliance for road use, while firmer settings can increase chassis control during spirited driving and track use.
This adjustment also allows the suspension setup to evolve as tyres, alignment or other chassis modifications are changed.
Adjustable Ride Height
The BC Racing BR Series allows the ride height of your F80 M3 or F82 M4 to be adjusted to suit both appearance and performance requirements.
For fast-road builds, this makes it possible to reduce arch gap and achieve a more purposeful stance.
For track-focused cars, ride height should be considered alongside suspension travel, geometry, alignment and corner weighting rather than simply lowering the vehicle as far as possible.
Choosing Your Spring Rate
Spring-rate selection is particularly important with a True Rear F8X setup.
Because the rear spring acts at a different point in the suspension compared with the factory divorced arrangement, spring rates used with a conventional rear setup should not be directly transferred to a True Rear configuration.
The correct spring rate should instead be selected specifically for the True Rear layout.
Factors to consider include:
- Vehicle weight
- Tyre compound and width
- Road or track use
- Alignment
- Anti-roll bars
- Chassis modifications
- Driver preference
If you’re unsure which spring-rate configuration is appropriate for your F80 M3 or F82 M4, contact us before ordering and we can help you choose a suitable setup.
Important True Rear Considerations
A True Rear coilover places the rear spring load through the damper mounting location rather than the original factory spring location.
Because this changes how suspension loads are transferred into the chassis, the condition and suitability of the relevant mounting points should be considered before installation.
This is particularly important on track-focused F8X builds where suspension loads can be considerably higher than during normal road use.
Professional installation and regular inspection of the rear damper mounting points and surrounding chassis are recommended.
F80 M3 / F82 M4 Compatibility
This BC Racing BR Series True Rear kit is intended for applicable BMW F80 M3 and F82 M4 models.
Please confirm your exact vehicle specification and suspension configuration before ordering.
If you’re unsure whether this is the correct True Rear application for your car, contact us and we’ll help you identify the appropriate setup.
What’s Included?
The BC Racing BR Series True Rear kit is supplied as a complete coilover suspension package for the applicable BMW F80 M3 / F82 M4, including the front coilovers, True Rear rear coilover assemblies, springs and relevant adjustable components.
Exact top-mount and spring-rate specifications can vary depending on the selected configuration.
Explore More BMW F80 M3 / F82 M4 Parts
Looking to improve your F80 M3 or F82 M4 further? Explore our range of BMW M3 and M4 parts and upgrades, including suspension, handling, performance and styling products.
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