PROGRESSIVE SUSPENSION 444 SERIES HEAVY DUTY SHOCK CHROME 12.5" (318MM) 3419 The valve train drive technique

The valve train drive technique is based on the Evo Big Twin

Stock replacement

Available in Deep Cut

workwear jackets are the mark of the practical man

PROGRESSIVE SUSPENSION 444 SERIES HEAVY DUTY SHOCK CHROME 12.5" (318MM) 3419 The valve train drive technique444 Series ShocksFeatures the all new Frequency Sensing Technology (FST) which allows the shocks to sense the frequency of a bump and automatically adjust damping for superior ride quality Deflective disc valving Adjust spring pre load by hand, no special tool needed Includes a progressive rate spring and is high pressure gas charged for consistent performance 444 Series shocks are available in 3 configurations: Standard (Up to 250 lbs.), Heavy duty