Cobb Subaru 08-21 WRX/STI Adjustable Rear Sway Bar – 24mm

The COBB Subaru 08-21 WRX/STI Adjustable Rear Sway Bar – 24mm does not have enough exact application evidence to assign safe vehicle YMM. Match manufacturer part number CB-013RZ-24, complete vehicle, engine and transmission configuration, factory equipment, required calibration, emissions eligibility, interfaces, and every product note before ordering.

Key Features

• 24mm Hollow Chromoly Steel Bar: Delivers 200%+ stiffness increase over stock 16mm bar for flatter cornering and reduced understeer.
• Greasable Polyurethane Bushings: Zinc-plated steel sleeves and heavy-duty bushings with zerk fittings ensure smooth operation and long life under high loads.
• Complete Bolt-On Kit: Includes custom brackets, hardware, and bushings for straightforward installation no fabrication needed.
• Seamless 4130 chromoly steel tubing with 3mm wall thickness for strength without excess weight.
• 3-Way Adjustability: Three settings via splined ends and locking rings allow precise rear roll tuning without bar removal stock-like, medium, or maximum stiffness.
• Black Powder Coat Finish: Resists corrosion and chipping for lasting appearance on daily-driven or race cars.

Fitment

Specifications

What’s Included

One new COBB product in the exact configuration and quantity identified by manufacturer part number CB-013RZ-24. Calibrations, hardware, hoses, clamps, gaskets, adapters, wiring, fluids, tools, and companion components are included only when expressly stated for this exact part number.

About COBB

COBB develops engine-management, intake, cooling, exhaust, drivetrain, suspension, and vehicle-accessory products for supported performance platforms. Correct selection remains exact-vehicle, exact-configuration, exact-interface, and exact-part-number specific.

Related COBB Products

• Cobb 08-21 Subaru WRX/STI Adjustable Rear Sway Bar – 22mm
• Cobb 08-21 Subaru WRX/STI Rear Sway Bar Mount Reinforcement Kit
• Cobb 15-21 Subaru WRX Adjustable Front Sway Bar – 24mm

Browse the COBB collection for related tuning, intake, cooling, exhaust, drivetrain, and chassis products.

Frequently Asked Questions

Why is fitment verification required for this COBB product?
Exact vehicle application evidence is not complete enough for safe YMM. Confirm the vehicle, drivetrain, factory equipment, calibration, emissions eligibility, interfaces, and exact part number before ordering.

Are all supporting parts included?
Only components expressly listed for the exact manufacturer part number are included. Tuning, hardware, hoses, clamps, gaskets, adapters, wiring, fluids, and companion components may be separate.

Is tuning or calibration required after installation?
Requirements depend on the exact product and vehicle. Intake, fuel, boost, turbo, and engine-management changes may require a compatible calibration before operation.

Installation Instructions

Follow the current COBB and factory service instructions for this exact part number. Verify fitment, factory equipment, emissions eligibility, required calibration, software and firmware, interfaces, hardware, fluid or electrical connections, and clearances before installation. Inspect the completed work and confirm safe operation before full-load use.