Roadmaster Rear Anti-Sway Bar 1139-149

The Roadmaster Rear Anti-Sway Bar 1139-149 is a vital suspension upgrade designed to eliminate the "top-heavy" feel and excessive body roll common in motorhomes, trucks, and vans. While many vehicles come with a factory rear bar, they are often undersized for the significant weight and high center of gravity of a fully loaded chassis. Roadmaster's RSS (Roadmaster Suspension Solutions) bars are engineered to be thicker and stronger, providing up to 90% more resistance to sway than original equipment.

By tying the rear axle to the frame, the bar uses the axle’s weight as a brace to counter side-to-side shifting. This stabilizes the vehicle against heavy crosswinds, passing semi-trucks, and shifting cargo, significantly reducing the "white-knuckle" effort required to keep the vehicle in its lane.

Features of the Roadmaster Rear Anti-Sway Bar:

• 4140 Chromoly Steel: Forged from a high-grade chromium-molybdenum alloy that is significantly stronger and more rigid than standard 1020 spring steel.
• Increased Bar Diameter: RSS bars are typically 1/4" to 3/8" thicker than stock. Every 1/8" increase in diameter provides an exponential 30% boost in torsional roll stiffness.
• Heavy-Duty Polyurethane Bushings: Unlike standard rubber that cracks and compresses, these bushings are impervious to oil, gas, and ozone, ensuring long-term support without "give."
• Precision Engineered Fit: Custom-designed for specific chassis to ensure no interference with existing aftermarket accessories or suspension components.
• Baked-On Powder Coat: A durable finish that fuses to the metal, protecting against corrosion from road salt and harsh environmental debris.

Benefits of the Roadmaster Rear Anti-Sway Bar:

• Immediate Handling Improvement: Delivers a "Wow!" difference in control, allowing for confident cornering and quicker maneuvers in traffic.
• Reduced Driver Fatigue: Minimizes the constant steering corrections needed on long highway hauls, so you arrive at your destination refreshed.
• Balanced Weight Transfer: Keeps the vehicle level on irregular surfaces or when entering driveways and speed bumps.
• Safety in Extremes: Provides better tracking and stability during sudden evasive maneuvers or in high-wind conditions.
• Preserves Interior Contents: By smoothing out the side-to-side "waddle," it helps prevent appliances, dishes, and gear from shifting inside your RV.