Cobb Subaru 08-21 WRX/STI Adjustable Rear Sway Bar - 24mm-COBB-COBBCB-013RZ-24
Cobb Subaru 08-21 WRX/STI Adjustable Rear Sway Bar - 24mm-COBB-COBBCB-013RZ-24
Cobb Subaru 08-21 WRX/STI Adjustable Rear Sway Bar - 24mm-COBB-COBBCB-013RZ-24
Click to zoom in

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

COBB
COBBCB-013RZ-24
700424680900
Sway Bars
8 Units In Stock - Ships Next Business Day
$ 330.00
$ 330.00

SKU: BCB-013RZ-24   |   UPC: 700424680900

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

The Cobb Adjustable Rear Sway Bar (24mm) bolts directly onto 2008-2021 Subaru WRX and STI models, replacing the factory bar with a thicker, tunable design. This upgrade stiffens the rear suspension to balance chassis roll and sharpen turn-in response during aggressive driving. Drivers gain immediate feedback and control for autocross, track days, or spirited roads.

Key Features

  • 24mm Hollow Chromoly Steel Bar: Delivers 200%+ stiffness increase over stock 16mm bar for flatter cornering and reduced understeer.
  • 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.
  • 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.
  • Black Powder Coat Finish: Resists corrosion and chipping for lasting appearance on daily-driven or race cars.

Product Notes

  • Pair with front sway bar for fully balanced handling; works with stock or aftermarket coilovers.
  • Grease bushings during install and every 5,000 miles for optimal performance.
  • Boxed for protection measures 41" x 6" x 6" with 16.8 lb shipping weight.

Installation Notes

  • Professional installation recommended.
  • Estimated 1-2 hours with basic tools jack up rear and remove stock bar/end links first.
  • Reuses OEM end links torque bushings to 18-22 ft-lbs and perform wheel alignment after.

This Part Fits

Year Make Model Submodel
2008-2021 Subaru Impreza WRX STI All
2008-2014 Subaru Impreza WRX Base, Limited, Premium
2015-2021 Subaru WRX Base, Limited, Premium

Why Choose Cobb?

  • Subaru specialists with decades of rally and track engineering experience.
  • U.S.-made components tested on real-world Subaru chassis for reliability.
  • Direct bolt-on design from factory CAD data ensures perfect fit and function.

Frequently Asked Questions

  • Q: Will this fit my 2017 STI hatchback?
    A: Yes, direct fit for all 2008-2021 STI sedans and hatches using OEM mounting points.
  • Q: What material is the bar made from?
    A: Seamless 4130 chromoly steel tubing with 3mm wall thickness for strength without excess weight.
  • Q: What warranty coverage?
    A: Backed by Cobb's 1-year limited warranty against defects in materials and workmanship.

Shipping & Handling

  • Method: UPS Ground or FedEx Ground
  • Availability: In stock - ships same or next business day
  • Packaging: Protective cardboard tube 41 x 6 x 6 inches
  • Weight: 16.8 lbs

Request For Information

Have questions about Cobb Subaru 08-21 WRX/STI Adjustable Rear Sway Bar - 24mm? Fill out the form below and we'll get back to you by the next business day.
COBB

COBB

COBB Tuning parts for turbocharged performance platforms are stocked at Black Ops Auto Works. Shop the Accessport ECU programmer, cold air intakes, cat back exhaust systems, and supporting hardware engineered for Subaru WRX and STI, Ford Focus ST and RS, Ford F-150 EcoBoost, Mazdaspeed3 and 6, Nissan GT-R, Porsche, BMW, and Volkswagen platforms. Every product is filterable by year, make, model, and trim so the correct part ships the first time. Black Ops Auto Works carries 372 COBB SKUs across tuning, intake, and exhaust categories. What This Brand Covers COBB Tuning built its reputation on the Accessport, one of the most widely used ECU flash tools in the aftermarket, and has expanded into intakes, exhausts, downpipes, and supporting hardware for a range of turbocharged platforms. The catalog centers on a defined group of import and Euro performance vehicles rather than a single brand family. Brand Focus COBB Tuning parts are engineered primarily for Subaru, Ford, Mazda, Nissan...

View COBB Products
Suspension

Suspension

Suspension parts and complete kits for cars, trucks, SUVs, Jeeps, and off-road builds are stocked at Black Ops Auto Works. Shop coilovers, lowering springs, lift kits, leveling kits, shocks and struts, sway bars, control arms, tie rods, ball joints, bushings, chassis bracing, alignment hardware, air suspension, and complete stage kits from Bilstein, KW, Ohlins, Fox, KING, ICON, BC Racing, Silvers, Eibach, H&R, Swift Springs, Whiteline, Energy Suspension, Moog, SPC Performance, Rough Country, ReadyLIFT, BDS, Skyjacker, Air Lift, Firestone, and Black Ops Auto Works. Start with a matched shock and spring package or a full coilover kit, then layer in sway bars, chassis bracing, and camber adjustment hardware. Every part is filterable by year, make, model, trim, and drivetrain to confirm fitment before ordering. What This Category Covers Suspension is the highest-leverage handling upgrade on any vehicle. A properly matched shock, spring, and sway bar package produces measurable i...

View Suspension Products
Sway Bars

Sway Bars

Sway bars and anti-roll bar kits are stocked at Black Ops Auto Works from Eibach, H&R, Hellwig, Progress Technology, aFe Control, PERRIN, Whiteline, SuperPro, UMI Performance, QA1, RockJock, Ridetech, Pedders, Cusco, Cobb, Bilstein, and Skyjacker. Find front sway bars, rear sway bars, matched front-and-rear anti-roll kits, adjustable sway bars, solid and tubular bars, and chromoly heavy-duty truck bars. Every product is filterable by year, make, model, trim, and drivetrain so the correct sway bar ships the first time. Black Ops Auto Works carries 1,149 sway bar SKUs across muscle cars, Jeeps and SUVs, trucks, European performance vehicles, Japanese sport compacts, and off-road builds. What This Collection Covers A sway bar, also called an anti-roll bar or stabilizer bar, is a torsion spring connecting the left and right sides of an axle. When one wheel moves relative to the other in a corner, the bar twists and resists body roll. Sway bars only act during cornering, so strai...

View Sway Bars Products
Sway Bars & Bushings

Sway Bars & Bushings

Sway bars, bushings, brackets, and end links are stocked at Black Ops Auto Works for improved handling, reduced body roll, and sharper steering response. Shop front and rear sway bars, anti-roll kits, adjustable and billet end links, sway bar bushings, and service kits for Jeep, Dodge, Ram, Ford, Chevrolet, GMC, BMW, Porsche, Subaru, and Toyota platforms. Every product is filterable by year, make, model, trim, and drivetrain so the correct sway bar component ships the first time. Black Ops Auto Works carries 1,966 sway bar and bushing SKUs across street, off-road, and track categories. What This Collection Covers A sway bar, also called an anti-roll bar, connects the left and right sides of the suspension to reduce body roll during cornering. Bushings support the bar in its mounts, and end links connect the bar to the suspension for precise, controlled movement. Product Categories Front sway bars, rear sway bars, anti-roll kits, adjustable sway bars, sway bar bushings and mount ...

View Sway Bars & Bushings Products
Military & First Responder Discounts

Military & First Responder Discount Program

Black Ops Auto Works proudly honors active duty military, veterans, National Guard, reserves, police officers, firefighters, and EMTs with an exclusive 5% discount on all performance parts and carbon fiber upgrades. Verify instantly and start saving today.

Learn More & Apply

Your cart

×