REVO coils provide improved plush ride-quality, control and resistance to bottoming-out REVO extended coil length has larger sweet spot without increasing overall shock length Allows minimal pre-load adjustment by hand when changing between riders weights or loads Adjusts by hand, no tools needed Available in 13in. and 14in., standard or heavy-duty applications Easy installation and alignment, provided by spherical bearings on both top and bottom 35mm monotube construction Deflective disc valve stacks Balanced/ matched piston and base-valve design specific for these motorcycle applications Low friction sealing system and PTFE based sliding bearings for improved performance and feel Seven external knob adjustments allow fine-tuning of rebound Seven external knob adjustments allow fine-tuning of compression Provides optimum rebound and compression performance for any given rider weight, personal ride-quality preference or personal riding style Nitrogen gas bladder design allows ultra-fast response and stiction-free movement Light to heavy riders can fine-tune ride preference Aggressive to casual riding styles can tune to desired quality or personal preference NOTE: Heavy-duty applications are recommended for 250 lb.+ rider and passenger total weight. Also consider heavy-duty if the majority of your riding is 2-up, stunt riding or aggressive riding style.