Rear Shock Spring Spring Color:Black (+$10) so the Wilbers shock is

so the Wilbers shock is designed a bit longer while maintaining the same seat height

the air chamber provides end-stroke progression

Kit contents

and spring preload adjustments

Rear Shock Spring Spring Color:Black (+$10) so the Wilbers shock isThe Hyperpro progressive rear spring provide an easier cornering, a shorter braking distance, makes the bike less sensitive to weight changes, provides improved tire life, gives a better balance in the bike and better overall feedback of your bike. The rear spring is mounted on your original shock absorber. Every Hyperpro shock spring is developed to the specific needs of the motorcycle.