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After more than a decade of ruling the roads with the road proven shocks, Progressive Suspension unveiled another breakthrough design. Dubbed Frequency Sensing Technology (FST) for its unique ability to dynamically adjust damping as you ride. The result is superior performance no matter the road conditions. A top mount threaded preload adjuster allows for fine tuning with a simple twist of the cap.
|Product Style||RevZilla Item #||Manufacturer Product #||Availability|
|Standard 11" / Black||899803||444-4062B||In Stock: Ships within 24 hours|
|Standard 11" / Chrome||899804||444-4062C||In Stock: Ships within 24 hours|
|Standard 11 1/2" / Black||899805||444-4063B||In Stock: Ships within 24 hours|
|Standard 11 1/2" / Chrome||899806||444-4063C||Only 3 Left: Ships within 24 hours|
|Standard 12" / Black||899779||444-4049B||In Stock: Ships within 24 hours|
|Standard 12" / Chrome||899780||444-4049C||In Stock: Ships within 24 hours|
|Standard 12.5" / Black||899753||444-4007B||In Stock: Ships within 24 hours|
|Standard 12.5" / Chrome||899754||444-4007C||In Stock: Ships within 24 hours|
|Standard 13" / Black||899755||444-4008B||Out of Stock|
|Standard 13" / Chrome||899756||444-4008C||Available: Requires 5-6 business days lead time prior to shipment|
|Standard 13 1/2" / Black||899757||444-4009B||Out of Stock|
|Standard 13 1/2" / Chrome||899758||444-4009C||Out of Stock|
|Heavy Duty 11" / Black||899809||444-4067B||In Stock: Ships within 24 hours|
|Heavy Duty 11" / Chrome||899810||444-4067C||Only 3 Left: Ships within 24 hours|
|Heavy Duty 11 1/2" / Black||899807||444-4066B||In Stock: Ships within 24 hours|
|Heavy Duty 11 1/2" / Chrome||899808||444-4066C||In Stock: Ships within 24 hours|
|Heavy Duty 12" / Black||899781||444-4050B||In Stock: Ships within 24 hours|
|Heavy Duty 12" / Chrome||899782||444-4050C||In Stock: Ships within 24 hours|
|Heavy Duty 13 1/2" / Black||899824||444-4003B||Only 1 Left: Ships within 24 hours|
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