Progressive Suspension

Progressive Suspension uses Inertia Active System (I.A.S.), a new development in suspension technology, in conjunction with dual air chambers for its' AirTail I.A.S.

Utilising both a coil and air shock, the AirTail I.A.S. is designed to ride like traditional high-end shocks while allowing for extensive height and spring rate tuning.

The dual air chambers permit the rider to adjust ride height independent of suspension firmness, meaning ride height can be adjusted without compromising ride quality. The system is also available with onboard compressor and control center to allow on-the-fly tuning.

Current applications include Harley-Davidson Touring models, with other models being added at the time of writing.

Progressive Suspension's Progressive Rate Fork Springs soak up small road bumps yet can absorb the larger ones as well. The Progressively Wound design gives you the best of both worlds. When you install these fork springs you'll be amazed at the improvement you'll feel in the handling and ride of your cruiser. The rates and lengths of these Progressively Wound Springs have been carefully designed to fit most cruiser models. Spring rates have been chosen to reduce front end dive under braking yet still provide excellent ride comfort. Plus, Progressive Suspension warranty their fork springs for life!

Progressive Rate Springs have many advantages over straight rate springs. A straight rate spring only offers linear resistance to compression and is a compromise. For example, if you have a 20lb. straight rate spring it will take 20lbs. of force to compress the spring one inch. Then it will take 20 more lbs. of force to compress it the next inch, and so on, until the end of the travel.

A Progressive Rate Spring has the advantage of a rising rate resistance to compression. For example, a 15lb. to 25lb. Progressive Rate Spring will take 15lbs. to compress it the first inch, then 17lbs. the next inch, and so on, until the end of the travel; it will take 25lbs. to compress it the last inch. The benefit of this is that the spring can be soft enough at the start of the travel to offer a plush ride yet be stiff enough at the end of the travel to soak up the big bumps.

Please contact us with any queries, or to request a quotation. We sell all current Progressive Suspension Front Fork Springs, Suspension Lowering Kits and Rear Shock Absorbers for American IronHorse, Big Dog, Harley-Davidson, Honda, Kawasaki, Suzuki, and Yamaha motorcycles.

Also Available

BARNETT Scorpion Billet Clutches & Braided Stainless Steel Control Cables, BENDIX Brake Pads & Brake Shoes, DYNOJET Carburettor Kits & Power Commanders, GOODRIDGE Braided Stainless Steel Brake & Clutch Hoses, K&N Air Filters, KURYAKYN Daring Products, PERFORMANCE MACHINE Brake Calipers, Brake Line Kits, Hand & Foot Controls, Brake Discs, Rear Wheel Pullies & Sprockets and Image Series Wheels, and VANCE & HINES Performance Exhaust Systems, Mufflers & Fuelpaks at competitive prices for American IronHorse, Big Dog, Harley-Davidson, Honda, Kawasaki, Suzuki, and Yamaha motorcycles.

Refund Policy

We guarantee 100% customer satisfaction. This means that if for any reason you are not fully satisfied you can cancel within 7 days of ordering or return any purchase in unused and good condition within 7 days from receipt and obtain a full refund of the price you paid or replacement of the product.

Within 7 days from receipt send us a quick notice either by fax or email explaining your reasons (change of mind, fault, etc.) and indicating if you prefer a replacement or to receive your money back. Then send us back the items with return costs at your charge.

Upon receipt of the returned goods we will either ship you free of charge the replacement items if available, or if not, we will refund the full price of the items you are returning, according to your instructions.

We will not accept for refund or replacement: Goods that have been either damaged or used; Goods returned to us after 7 days from receipt; Packages returned on a COD basis or freight collect.

Note

We aim to ensure accuracy in all our published information. However, circumstances outwith our control can lead to future change. If this has been your experience, you have our sincere apologies. Cruiser Ecosse cannot accept liability for any loss or damage arising in respect of any statement contained in this information. This information does not form part of a formal contract and we reserve the right to change it at any time.

We do not sell or supply exhaust systems or mufflers compliant with EU Directive 97/24/EC Chapter 9.