Progressive Suspension 444-4051C 444 Series 13" Heavy Duty Rear Shock Chrome

The Progressive Suspension 444 Series rear shocks represent a breakthrough in motorcycle suspension technology with their patented Frequency Sensing Technology (FST). These advanced shocks dynamically adjust damping in real-time as you ride, automatically sensing bump frequency and distributing oil through specialized ports to absorb impacts both large and small for superior ride quality across all road conditions.

Key Features:

• Proprietary Frequency Sensing Technology (FST) for automatic damping adjustment
• 13-inch eye-to-eye length with heavy-duty spring rates (270/315 lbs/in progressive)
• Chrome-plated steel shock body with chrome-plated progressive rate springs
• Machined billet aluminum end caps for durability and style
• Top-mount threaded preload adjuster for tool-free hand adjustment
• Deflective disc valving for precise damping control
• High-pressure gas charged for consistent performance
• Hand-built, tuned, and dyno-tested at Progressive's California facility

The heavy-duty configuration is specifically engineered for riders and loads exceeding 250 pounds, making these shocks ideal for larger riders or bikes frequently operated near maximum load capacity. Each shock is individually hand-built and dyno-tested to ensure optimal performance. Includes Limited Lifetime Warranty. Sold as a pair.