Rear Shock Eye c/c= 10.5in Spring Ht=5 3/4in Spring OD= 61mm Spring Thickness= 7.5mm Bolt ID Top=10.2mm Bottom= 10.2mm Fits Tomberlin 110cc Dirtbike : Get 2 It Parts, LLC offers SAME DAY SHIPPING. FAIR PRICING. SOUTH CAROLINA WAREHOUSING.