Whiteline BSR39Z Rear 20 mm 2-Point Adjustable Sway Bar for 03-09 Subaru Legacy

Vehicle Fitment

• 2003-2009 Subaru Legacy / Liberty BL/BP (includes GT / Turbo)
• 2003-2009 Subaru Outback BP (includes Turbo variants)

Features

• 20 mm heavy-duty solid spring rear sway bar
• 2-point blade-style adjustability for anti-roll tuning
• Synthetic elastomer bushings with MoS2 internal lubrication
• Includes reinforced KBR15 support brace to minimize mount flex
• Powder-coated bar and hardware resist corrosion
• Improves lateral grip, reduces rear body roll in corners
• Maintains ride comfort even at medium roll stiffness setting
• Backed by Whiteline 3-year / 60,000 mi (≈ 100,000 km) warranty

Specifications

• Position: Rear axle anti-roll bar assembly
• Bar diameter: 20 mm solid spring steel
• Adjustment: Two lever settings for progressive roll control
• Material: Steel bar; polyurethane bushings; coated alloy support brace (KBR15)
• Quantity: 1 sway bar, 2 link bushings, KBR15 brace, installation hardware
• Weight: Approx. 6 lb (≈ 2.7 kg); Installation time ≈ 1 hour

Included Components

• 1x 20 mm rear sway bar assembly (blade adjustable)
• 2x synthetic elastomer bushings pre-greased
• KBR15 support brace for sway bar mounting reinforcement
• U-bolts, lateral locks, washers, nuts and bolts
• 1x printed installation guide

Product Description

The **Whiteline BSR39Z** is a rear anti-roll bar upgrade purpose-built for 2003-2009 Subaru Legacy/Liberty (BL/BP) and Outback (BP). Constructed from **20 mm solid spring steel**, it uses a **2-point blade-style adjustment** to tune roll stiffness - ideal for reducing rear body roll without sacrificing ride quality. The included **KBR15 support brace** reinforces factory sway bar mounts, preventing flex under dynamic load. Brushed alloy hardware and synthetic elastomer bushings with internal MoS2 lubrication ensure long-term durability. 

Installation is DIY-friendly and takes about one hour. Adjustable lever arms offer tuning options to accommodate passenger load, towing, or spirited driving. At medium setting, users report noticeably improved grip and rotation without harshness. Post-installation tightening of mounting bolts while vehicle is on wheels helps maintain alignment and operation. 

Fitment confirmed through **2009**; compatibility with newer models or chassis is unverified and should not be assumed. Whiteline backs the sway bar and reinforcement kit with a **3-year / 60,000 mi (≈ 100,000 km)** warranty. This suspension-only component does not impact emissions compliance. A wheel alignment is recommended after install to maintain proper chassis dynamics.