BC Racing DS Series - BMW 3/4 Series F80 F82 M3 M4 (2014-2018) (5-Bolt Top Mount) (True Rear Coilover)
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BC Racing DS Series True Rear Coilovers – BMW F80 M3 / F82 M4 5-Bolt Top Mount
The BC Racing DS Series True Rear Coilovers for the BMW F80 M3 and F82 M4 with the 5-bolt front top mount are a performance-focused suspension upgrade designed for drivers looking for sharper chassis control, adjustable ride height and a true rear coilover conversion.
The DS Series uses digressive damping technology, providing stronger control during lower-speed suspension movements while allowing the suspension to respond more freely to larger bumps, kerbs and sharper surface changes.
Combined with the True Rear configuration, the DS Series provides a highly adjustable setup for serious fast-road, track and performance-focused F8X builds.
Why choose BC Racing DS Series True Rear for your F80 M3 or F82 M4?
The F80 M3 and F82 M4 are highly capable performance platforms, and the DS Series is a strong choice for owners looking for a sharper and more focused setup than the BR Series.
Its digressive damping characteristics help control body roll, pitch and weight transfer during braking, acceleration and cornering, while retaining useful compliance over rougher road and track surfaces.
The True Rear configuration replaces the factory-style divorced rear spring and damper arrangement with a complete rear coilover assembly, giving the rear suspension a more motorsport-focused layout.
Key Features
- BC Racing DS Series True Rear coilover suspension
- BMW F80 M3 and F82 M4 application
- 5-bolt front top mount fitment
- True rear coilover conversion
- Rear spring mounted around the damper
- Digressive damping technology
- 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 DS Series 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 setup development more straightforward on track-focused cars.
Digressive Damping Technology
The defining feature of the DS Series is its digressive damping design.
The damper provides stronger control during lower-speed suspension movements such as body roll, pitch, braking dive and weight transfer.
As damper shaft speed increases, the damping curve becomes less aggressive, allowing the suspension to move more freely over larger bumps, kerbs and sharper surface changes.
This can provide a useful balance between strong chassis control and maintaining mechanical grip during demanding fast-road and track driving.
Important 5-Bolt Top Mount Fitment
This kit is intended specifically for F80 M3 and F82 M4 models using the 5-bolt front top mount configuration.
BMW used different front top-mount arrangements across F8X applications, so the mounting pattern should always be confirmed before ordering.
A 5-bolt application should not be assumed to be interchangeable with the 3-bolt version.
If you're unsure which configuration your vehicle uses, check the front strut top mount or contact us before ordering and we can help identify the correct kit.
30-Way Damping Adjustment
The DS 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 also allows the suspension to be refined as tyres, alignment or other chassis modifications change.
Adjustable Ride Height
The BC Racing DS Series allows the ride height of your F80 M3 or F82 M4 to be adjusted to suit both appearance and performance requirements.
For road-driven cars, this makes it possible to reduce arch gap and achieve a lower, more purposeful stance.
For performance-focused setups, ride height should be considered alongside suspension travel, geometry, alignment and corner weighting rather than simply lowering the vehicle as far as possible.
BMW F80 M3 / F82 M4 Track Suspension
The DS Series True Rear provides a strong platform for developing the F8X chassis around fast-road and track use.
The suspension can be configured alongside upgrades such as:
- Performance tyres
- Adjustable suspension arms
- Uprated anti-roll bars
- Polyurethane or solid bushes
- Chassis braces
- More aggressive alignment settings
For track-focused builds, the combination of digressive damping and a True Rear layout gives greater scope to develop the chassis around tyre grip, spring rates and geometry.
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, conventional rear spring rates should not be directly transferred to a True Rear configuration.
The correct rear 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.
BR Series vs DS Series
The BR Series is the more versatile all-round option for road, fast-road and occasional track use.
The DS Series is more performance focused, using digressive damping to provide stronger chassis control during lower-speed suspension movements while allowing more freedom of movement over larger bumps.
For an F80 M3 or F82 M4 used mainly on the road, the BR Series may be the better choice.
For drivers prioritising sharper response and more frequent track use, the DS Series is the stronger option.
F80 M3 / F82 M4 Compatibility
This BC Racing DS Series True Rear kit is intended for applicable BMW F80 M3 and F82 M4 models using the 5-bolt front top mount configuration.
Please confirm your exact vehicle and suspension setup before ordering, particularly if the car has previously had suspension components changed.
If you're unsure whether this is the correct application, contact us and we'll help you identify the appropriate kit.
What's Included?
The BC Racing DS 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.
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