Factory shocks that come stock on your bike are more generic because the manufacturer has no idea of the characteristics and riding preferences of the person that will purchase the bike. No matter how fast your bike is, or how good it looks, none of that is important unless you have a comfortable, enjoyable, and safe ride. Getting the correct suspension for your ride should be one of your first considerations after purchasing a bike.
With numerous choices in aftermarket suspension, Progressive Suspension makes it easy by offering a wide range of products with varying degrees of price, performance, and rider preference. Here is a short summary of motorcycle suspension parts they offer for Harley Davidson motorcycles.
HARLEY DYNAGLIDE, SPORTSTER, TOURING
412 Series: Gas-Charged Damper / Coil Shock
416 Series: Air Shocks – adjustable load
418 Series: Aluminum Bodied Gas-Charged Damper / Coil Shock w/ damping adjustment
430 Series: Gas-Charged Monotube Damper / Coil Shock (Deflective Disk Valve Design)
440 Series: Gas-Charged Damper/ Coil Shock with Inertia Active System (I.A.S.) – self adjusting damper
812 Series: 412 Series technology with upgraded styling
HARLEY TOURING
940 Series Ultra Touring Shocks – Designed as best 12″ shock on the market
716 Series Air Draggers: Ride-height adjustable air shocks for later model Touring
740 Series: AirTail I.A.S Shock Absorber System (both Coil and Air Shock in one system)
Monotube Fork Cartridge Kit – converts damper rod fork to high performance cartridge fork. Available in stock height and lowered height.
Touring Link – Assists to reduce or eliminate rear wheel wobble.
SOFTAIL MODELS
422 Series: Adjustable from stock to 2″ lower
722 Series Airtail Shocks – Both Coil and Air Shock in one system
MOST HARLEY DAVIDSON MODELS
Fork Springs – Stock ride height progressive rate springs. Assists inferior damper-rod fork systems to help eliminate fork diving, mushy front end and deflection.
Fork Spring Lowering Kits – same benefits with lowered ride height of either 1″ or 2″
Drop-In Fork Spring Lowering Kit – Does not require complete fork dis-assembly for installation. Drops-in through the fork fork cap. Can lower forks up to 2″
As mentioned earlier, most series of shocks have many different designs depending upon the bike fitment. As an example, the 412 Series consists of well over 100 different models. Again, each of which are designed with your particular bike in mind as well as predicted payloads. When it comes to bolt-on shocks, the Progressive Suspension family of shocks is about as good as it gets without paying for custom shocks.
If you are not sure which products to select based upon your motorcycle and riding needs, then speak to a qualified technician before making your purchase. To ensure you are purchasing new and authentic product, and to ensure the manufacturers warranty is honored, make your purchase with an Authorized Progressive Suspension dealer.
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