OVERVIEW

Toyota built understeer into the GR Corolla on purpose — safe, predictable, and the first thing you want gone once you start driving the car properly. SuperPro's Roll Control RC0134RZ-24 24mm 3-Position Adjustable Rear Sway Bar is the fix. Cold-formed from solid spring steel, it replaces the factory 48812-12510 stabilizer bar and delivers 154.6% more roll resistance at its 24mm setting, loading the front tires so they can finally do their job. Turn-in sharpens, the rear rotates instead of dragging the nose wide, and the chassis stays flat through sustained corners. Three positions let you re-balance the car with common hand tools — soft for a rough commute, hard for maximum rotation at an AutoX or track day — and no alignment is needed afterward.

FEATURES

• 154.6% Stiffer Than Factory: At its 24mm setting the bar delivers well over double the roll resistance of the OE stabilizer bar, with soft and hard positions on either side to fine-tune balance.
• Eliminates Factory Understeer: Raising rear roll resistance transfers lateral load to the front axle, sharpening turn-in and letting the car rotate on throttle rather than push wide.
• 3-Position Adjustability: Three end-link mounting points let you retune rear roll stiffness in minutes — soft for comfort and low-grip surfaces, medium for balanced street use, hard for maximum roll control on track.
• Solid Spring Steel Construction: Cold-formed from high-tensile solid spring steel for consistent torsional response and durability under repeated track loading.
• SuperPro Polyurethane Bushings: Purpose-engineered polyurethane mounting bushings resist oil, heat and weathering, and eliminate the deflection of factory rubber without adding harsh NVH.
• Direct Bolt-On, No Alignment Required: Mounts to OEM locations using factory or aftermarket end links. Roughly a 2-hour install and no trip to the alignment rack.
• Limited Lifetime Warranty: Backed by SuperPro's limited lifetime warranty. Engineered and tested in Brisbane, Australia.

SPECIFICATIONS

• Bar Diameter: 24mm (61/64" / 0.944")
• Material: Solid Spring Steel
• Adjustability: 3-Point Adjustable
• Product Range: SuperPro Roll Control
• Fitting Position: Rear
• Installation Time: Approx. 2 Hours
• Wheel Alignment Required: No
• Kits Required: 1
• Warranty: Limited Lifetime

Adjustment Settings:

Always set the left and right sides of the bar to the same hole position.

WHAT IS INCLUDED

• 1x 24mm 3-Position Adjustable Rear Sway Bar
• 2x SuperPro Polyurethane Mounting Bushings
• 2x Mounting Saddles
• 2x Lateral Locks

PART NUMBER

• RC0134RZ-24

OEM Cross-Reference — Direct Replacement For:

• Toyota 48812-12510 — Bar, Stabilizer, Rear (GR Corolla)

FITMENT

• 2023+ Toyota GR Corolla (GZEA14)