Whiteline Heavy Duty Front Sway Bar 27mm Adjustable – 2008-2015 Mitsubishi Evo X
Maximum Front Roll Stiffness for the Evo X
The Whiteline BMF55Z is a 27mm heavy duty 3-point adjustable front sway bar for the 2008-2015 Mitsubishi Lancer Evolution X. At 27mm, this is the maximum front roll stiffness option in the Whiteline Evo X range — for time attack, circuit racing, and maximum-grip competition applications where absolute front roll control is the priority.
DETAILS
- 27mm heavy duty 3-point blade adjustable front sway bar
- Heavy duty construction for sustained track-load use
- Solid spring steel, silver powder coat
- Includes mount bushings and hardware
- 3 adjustment positions
- Fitment: 2008-2015 Mitsubishi Lancer Evolution X
Maximum Front Stiffness on the Evo X
The standard and 22mm front bars are for street and mixed-use Evo X configurations. The 27mm BMF55Z is for dedicated track and competition use where maximum front roll stiffness is required. The Evo X’s S-AWC system and sophisticated suspension handle this stiffness level well on smooth circuits.
Heavy Duty Designation
Heavy duty construction indicates appropriate wall thickness and material grade for sustained use at maximum stiffness levels under track conditions. This bar won’t fatigue under repeated high-load cornering cycles.
System Calibration at Maximum Stiffness
Running maximum front stiffness requires matched rear stiffness (27mm BMR93Z or BMK010 rear bar) to maintain AWD balance and prevent excessive understeer.
Why Choose Whiteline
Whiteline has been engineering suspension components from their facility in Australia since 1979. Every product in their catalog is developed with a clear goal: measurable improvement in handling, stability, and tyre contact. Whiteline’s polyurethane bushings, sway bars, control arms, and alignment correction kits are engineered using finite element analysis and validated on track before they reach the market. Their components are direct-fit, bolt-on solutions designed for enthusiasts who want real performance gains without fabrication or custom work.
The RallySport Take
Top of the range front bar for Evo X competition builds. Installation is a straightforward bar swap — remove the OEM bar, install the Whiteline unit with the provided polyurethane mount bushings, connect the endlinks. Start in the middle adjustment position and move from there. Adjustable endlinks are a worthwhile companion purchase if the car has been lowered, ensuring the bar operates at zero preload at the new ride height.
What’s in the Box
- 27mm heavy duty 3-point blade adjustable front sway bar
- Heavy duty construction for sustained track-load use
- Solid spring steel, silver powder coat
- Includes mount bushings and hardware
- 3 adjustment positions
Fitment
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2008-2015 | Mitsubishi | Evo X | All |





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