Whiteline Heavy Duty Rear Sway Bar 27mm Adjustable – 2008-2015 Mitsubishi Evo X

Maximum Rear Roll Stiffness for the Evo X
The Whiteline BMR84Z is a 27mm 3-point adjustable rear sway bar for the 2008-2015 Mitsubishi Lancer Evolution X. At 27mm, this is a heavy-duty bar designed for aggressive track use where maximum rear roll stiffness is required. The Evo X’s sophisticated AWD system with Super All-Wheel Control (S-AWC) benefits from precise chassis calibration — a stiffer rear bar helps define the roll stiffness distribution for the system to work with.

DETAILS

• 27mm 3-point blade adjustable rear sway bar — heavy duty spec
• Solid spring steel, silver powder coat
• Includes polyurethane mount bushings and hardware
• 3 adjustment positions
• Fits 2008-2015 Mitsubishi Lancer Evolution X
• Maximum rear roll stiffness for track-focused Evo X builds

Evo X S-AWC and Rear Roll Stiffness
The Evo X’s S-AWC system uses a combination of ABS, Active Yaw Control, and electronic differentials to manage torque distribution. The system’s effectiveness depends partly on the chassis roll stiffness distribution — a well-tuned rear bar gives the S-AWC a more consistent platform to work from. At track speeds where the system operates near its limits, a stiffer rear bar reduces body roll and improves tyre loading consistency.

Heavy Duty for Demanding Applications
The 27mm spec is toward the upper end of the practical range for the Evo X platform. It’s appropriate for dedicated track cars, time attack builds, and high-grip applications. For street and mixed use, Whiteline also offers the 24mm BMR65XZ and other options that provide significant improvement with less aggressive calibration.

Three Positions for Track Tuning
All three positions provide significant stiffness. The middle position is a good starting point for most track applications — adjust based on how the car responds to the available grip level and circuit characteristics.

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

The maximum rear roll option for serious Evo X track builds. The 27mm diameter provides the stiffest rear roll stiffness in Whiteline’s Evo X range. Use it with matched front hardware and proper spring rates for optimal results.

What’s in the Box

• 27mm 3-point blade adjustable rear sway bar — heavy duty spec
• Solid spring steel, silver powder coat
• Includes polyurethane mount bushings and hardware
• 3 adjustment positions
• Maximum rear roll stiffness for track-focused Evo X builds

Fitment