Progressive Suspension Fork Spring Kit For Triumph Liquid Cooled Twins Features Progressive Suspension Fork Spring Kits soak up the small road bumps, yet are firm enough to absorb the molar-rattling ones Spring rates have been chosen to reduce front end dive during braking and still provide excellent ride comfort Soft enough at start of travel offers a plush ride and firm enough to soack up the big bumps Progression rate Precision wound Lifetime warranty