STX 36 Twin Rear Shock Absorber for Harley-Davidson Sportster XL (20042022) - HD 906

Item Summary S36DR1L type About the Product hlins STX 36 Twin Rear Shock Absorber for Harley-Davidson Sportster XL (20042022) Product Overview Upgrade your Harley-Davidson Sportster with the legendary performance of the hlins STX 36 Twin Rear Shock Absorber Set. Engineered specifically for the Sportster XL platform, these premium shocks combine race-developed suspension technology with classic twin-shock styling to dramatically improve ride comfort, cornering stability, and overall chassis control. Designed for riders who demand more from their motorcycle, the STX 36 delivers exceptional damping performance whether you're cruising city streets, attacking twisty backroads, or building a high-performance caf racer or custom Sportster. Hlins offers multiple STX 36 configurationsincluding emulsion, piggyback reservoir, hose reservoir, and inline reservoir modelseach specifically valved and tested for individual Sportster applications. Key Features Genuine hlins STX 36 Twin Rear Shock Absorbers Specifically engineered for Harley-Davidson Sportster XL models Race-proven STX (Single Tube Technology) design 36 mm high-flow piston High-pressure nitrogen gas monotube construction Model-specific damping calibration Adjustable spring preload Selected models feature rebound damping adjustment Selected models feature compression damping adjustment Selected models feature ride height adjustment Precision CNC-machined aluminum construction Fully rebuildable and serviceable Manufactured in Sweden STX 36 Single Tube Technology The hlins STX 36 utilizes a single-tube monotube hydraulic design incorporating a large 36 mm piston operating within a high-pressure nitrogen gas environment. This advanced architecture minimizes oil aeration and cavitation while maintaining highly consistent damping performance across varying riding conditions. Compared to conventional factory suspension, STX technology delivers: Superior hydraulic control Improved rear wheel traction Increased chassis stability Better bump absorption Reduced suspension fade Enhanced rider feedback Greater confidence during aggressive riding The larger piston area allows more precise control of oil flow, producing smoother suspension movement while maintaining excellent support under acceleration and braking. Model-Specific Engineering Unlike universal aftermarket shocks, every hlins Sportster application is specifically tuned for the motorcycle's geometry, weight distribution, and intended riding characteristics. Spring rates and damping curves are optimized to provide: Balanced chassis dynamics Improved steering precision Better rear wheel control Increased ride comfort Enhanced stability during cornering Predictable suspension response This motorcycle-specific calibration allows the suspension to perform exceptionally well immediately after installation while still offering adjustability for individual rider preferences. Adjustable Suspension Performance Depending on the selected hlins Sportster model, available adjustment features include: Spring Preload Adjustment Mechanical preload adjustment allows rider sag to be optimized for different rider weights and passenger or luggage loads. Benefits include: Proper chassis geometry Improved steering response Better braking stability Increased cornering confidence Enhanced ride quality Rebound Damping Adjustment Available on selected models, rebound adjustment controls suspension extension speed following compression. Advantages include: Improved rear tire grip Better corner exit stability Reduced chassis oscillation Enhanced rider confidence More precise suspension response Compression Damping Adjustment Higher-specification models include compression adjustment for fine-tuning impact absorption and chassis support. Compression tuning allows optimization for: Road conditions Aggressive riding Touring Passenger loads Performance riding Ride Height Adjustment Select models feature adjustable ride height, allowing riders to fine-tune steering geometry and ground clearance without altering preload settings. Premium Construction Every hlins STX 36 shock is manufactured using premium materials and precision machining processes developed through decades of championship-winning motorsport competition. Construction highlights include: CNC-machined aluminum shock bodies Hard-anodized corrosion-resistant surfaces Precision-ground piston rods Low-friction seal head assemblies Premium hydraulic fluid High-pressure nitrogen charging Precision shim-stack valving Replaceable internal wear components Because every STX 36 shock is fully rebuildable, it can be serviced and restored to factory performance, providing exceptional long-term value compared to disposable suspension systems. Performance Benefits Improved Ride Comfort The advanced hydraulic damping system absorbs road imperfections more effectively than factory shocks, reducing harshness and rider fatigue during everyday riding and long-distance touring. Enhanced Chassis Stability Better control of suspension movement minimizes unwanted chassis pitch and oscillation during acceleration, braking, and cornering. Superior Rear Tire Traction Improved wheel control allows the rear tire to maintain better contact with the pavement, maximizing grip and stability. More Predictable Handling The motorcycle responds more accurately to rider input, creating smoother transitions and increased confidence through corners. Reduced Suspension Fade The gas-charged monotube architecture maintains consistent damping characteristics even during prolonged riding and elevated operating temperatures. Technical Highlights STX Single Tube Technology 36 mm piston diameter High-pressure nitrogen gas design Motorcycle-specific valving Multiple reservoir configurations available Adjustable preload Optional rebound adjustment Optional compression adjustment Optional ride height adjustment Fully rebuildable construction Exact specifications vary depending on the selected Sportster application and hlins part number. Fitment Designed for a wide range of Harley-Davidson Sportster XL models, including: XL883 XL883 Custom XL883 Low XL883 SuperLow XL883 Iron XL883 Roadster XL1200 Custom XL1200 Low XL1200 Nightster XL1200 Forty-Eight XL1200 Forty-Eight Special XL1200 Iron XL1200 Roadster XL1200 Seventy-Two XL1200 SuperLow XL1200C XL1200CX Roadster XL1200T SuperLow Additional Sportster variants Model Years: Approximately 20042022, depending on the specific hlins part number selected. Always verify your motorcycle's model year and original shock length before ordering to ensure correct fitment. Installation The hlins STX 36 Twin Rear Shock Set is designed as a direct replacement for the factory suspension using OEM mounting points. Professional installation and suspension setup are recommended to ensure: Proper rider sag Correct preload adjustment Optimized damping settings Balanced chassis geometry Maximum suspension performance Correct setup significantly improves handling, stability, and overall rider confidence. Service and Maintenance Like all premium hlins suspension products, the STX 36 Twin shocks are fully rebuildable and supported by an extensive global service network. Routine servicing includes replacement of hydraulic oil, seals, bushings, and internal wear components, restoring factory-level damping performance and extending service life. Regular maintenance ensures: Consistent ride quality Maximum suspension performance Long-term durability Protection of your investment Why Choose hlins? For nearly 50 years, hlins Racing has been one of the world's most respected names in motorcycle suspension, earning championships in MotoGP, World Superbike, Endurance Racing, Motocross, and countless national racing series. The same engineering philosophy that has made hlins the choice of professional racers is built into every street suspension product, delivering exceptional comfort, control, and precision for everyday riders. Whether you're restoring a classic Sportster, building a custom caf racer, or simply looking to dramatically improve ride quality and handling, the hlins STX 36 Twin Rear Shock Absorber Set is one of the finest suspension upgrades available for the Harley-Davidson Sportster platform.