Progressive Industries RRT50 50 Amp RV Receptacle Tester

Progressive Suspension

<h3>America's Leading Aftermarket Motorcycle Suspension Brand</h3><p>Since its founding in 1982, <strong>Progressive Suspension</strong> has grown into the largest aftermarket motorcycle suspension manufacturer in the United States. What began as a focused pursuit of better ride quality has evolved over four decades into a full-spectrum suspension brand trusted by everyday commuters, long-distance tourers, custom builders, and OEM suppliers alike. Few names in the powersports world carry the same weight when it comes to handling, comfort, and chassis performance.</p><p>Progressive Suspension's reputation is built on a simple but powerful engineering principle: variable-rate spring coil spacing. By winding coil springs with progressively varied spacing, the springs deliver a supple initial response that soaks up small bumps, while stiffening progressively under heavier loads to prevent bottoming out and maintain confident control. This approach is applied across their entire lineup, from rear shocks to front fork springs, and it's what sets Progressive apart from one-size-fits-all OEM components.</p><h3>A Full-Spectrum Suspension Lineup</h3><p>The brand's most iconic offerings are their <a href="/823-progressive-suspension-shock-absorber-7556">shock absorbers</a>, which span multiple series — from the classic 412 Series twin shocks that cover decades of Harley-Davidson, Honda, Kawasaki, Suzuki, and Yamaha models, to the high-performance 494 Sport Series gas monotube units for modern touring machines. Whether a rider is on a vintage Shovelhead or a current-generation bagger, Progressive offers a shock calibrated for their weight, riding style, and load demands. Most shocks are preload adjustable, allowing riders to dial in their setup without tools.</p><p>Complementing the rear suspension, Progressive's <a href="/823-progressive-suspension-coil-spring-7512">coil springs</a> — including front fork springs and dual-rate rear shock springs — are engineered to the same progressive-rate standard. New fork springs can dramatically reduce fork dive under braking, improve front-end stability, and smooth out the ride over rough pavement, all with a straightforward drop-in installation on most platforms.</p><p>For riders looking for a more comprehensive chassis transformation, Progressive offers complete suspension kits that bundle springs, cartridge fork conversion kits, and related hardware into a single solution. Their monotube fork cartridge kits, for example, convert damper-rod forks to high-performance cartridge forks — a meaningful upgrade for touring and custom motorcycle builds.</p><p>Riders who want to alter their bike's stance can also explore Progressive's <a href="/823-progressive-suspension-suspension-lowering-hardware-kit-17210">suspension lowering hardware kits</a>. These drop-in front fork lowering systems allow for precise ride height adjustment, offering a cleaner look without sacrificing suspension travel or safety. The systems are engineered as direct-fit solutions for specific model years, keeping installation straightforward.</p><h3>Engineering, Testing, and Trust</h3><p>Progressive Suspension products are lab-engineered and field-tested before reaching riders. Each component undergoes rigorous inspection, and most shocks and spring products are backed by a lifetime limited warranty — a testament to the brand's confidence in its manufacturing standards. Their suspension systems have found their way onto premier custom builds, production trikes, and bikes tackling cross-country journeys, reflecting the breadth of riders who rely on Progressive to get the most from their machines.</p>