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FSIP Lifted R4TechINDIANAPOLIS, Ind. (Nov. 2012) – Firestone Industrial Products Company, LLC announces new Lifted R4Tech(tm) systems that are available for 2011-2012 Chevrolet Silverado/GMC Sierra 2500 and 3500 trucks, both 2WD and 4WD applications for all cab and bed configurations.

The R4Tech system is a proprietary, hybrid air-over-leaf suspension system featuring Firestone Airide(tm) air springs, Firestone Ride-Rite(tm) air accessories and SANLUIS Rassini(r) suspension technologies. Designed to replace the factory leaf spring suspension, the R4Tech system comprises a high-quality Firestone air spring and SANLUIS Rassini’s leaf-spring suspension, positioned in a unique architecture to create a fully functional system that adjusts for varying load capacities.

The Lifted R4Tech system is available for trucks with 6-inch front lift kits. The Lifted R4Tech system is rear-only, so enthusiasts will need to buy a front-only lift kit that will be paired with the rear Lifted R4Tech system.

“In our industry, we come across many enthusiasts who tow with their lifted truck. In these cases, ride quality and functionality are sometimes compromised,” said Paul Fessel, Division Manager, Light Duty Business, Firestone Industrial Products Company. “The Lifted R4Tech systems are designed to improve the ride quality of an unloaded, lifted truck while delivering level towing when loaded. The suspension is the best of both worlds: excellent ride coupled with great towing capability. As a matter of fact, some of our ride evaluations show that the Lifted R4Tech system rides as good as or better than stock height R4Tech systems.”

Developed to allow the suspension to move at all load conditions, the R4Tech system isolates and absorbs road impact for passengers and cargo, delivering an improved ride at all times by utilizing the variable spring rate of the air spring to stiffen when the truck is loaded and soften when it’s unloaded. It also increases axle control during acceleration and braking for improved torque management and reduced wheel hop.

The Lifted R4Tech system comes with the Rassini foundation suspension – including leaf springs, lower trailing link, J-spring and mounting brackets – the Airide air spring and an air compressor control system that maintains the proper air level in the spring for the exact load you’re carrying. Shocks are not included in the lifted systems.

Professional installation is recommended for the Lifted R4Tech systems, which installs using the original suspension holes. Trained technicians are available toll-free (800.888.0650) to answer any product application, installation or warranty questions Monday through Friday from 7:30 a.m. to 4:30 p.m. EST.

About Firestone: Firestone offers a line of Complete Suspension Solutions that includes Ride-Rite(tm), Sport-Rite(tm), Coil-Rite(tm) and Level-Rite(tm) air helper springs; Work-Rite(tm) load assist springs; and the R4Tech(tm) hybrid air/leaf suspension system. These products have become synonymous with quality, durability and outstanding customer support. For more information, visit

Firestone Industrial Products Company, LLC specializes in air spring manufacturing and technology with a history of more than 75 years of research and development of technologically advanced air springs for the global marketplace. With headquarters in Indianapolis, Ind., and quality-certified manufacturing/assembly plants and technical centers throughout North America, Latin America, Europe and Asia, the company produces suspension products for commercial trucks & trailers, cars, sport utility vehicles, light trucks, minivans, vans and motor homes. Firestone facilities are ISO-14001, ISO-9001 and TS-16949 Certified.

About SANLUIS Rassini: SANLUIS Rassini(r) is the world’s largest designer and manufacturer of leaf springs for light vehicles, a leader in the NAFTA and Brazilian markets, and also a key designer and manufacturer of high-tech brake system components in North America. Its components are used in different platforms, such as high performance options as well as light and commercial vehicles. SANLUIS Rassini has seven production sites strategically distributed in the U.S., Mexico and Brazil; a technical center in Michigan; headquarters in Mexico City; and liaison offices in Stuttgart, Germany, and Shanghai, China. The company is ISO/TS-16949, Clean Industry and ISO-14001 Certified.

For more information, visit

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