Spring Diameter 47mm Mounting hole diameter: 10mm Mounting hole thickness: 20mm Rate(lbs/in)450lbs Package included: 2pcs Rear Shock Suspension Specification: Item Type: Shock Absorbers Material: Aluminum Alloy Applcation: Used for all types of motorcycles, off-road vehicles, ATVs, karts, etc. with 340mm/ 13.39in mounting hole distance, can be mounted on front or rear How to Use: Install it in the original vehicle’s shock absorber position Package List: 2 x Shock Absorbers 2 x Adjuster 2 x Spacer #productDescription { color: #333333; word-wrap: break-word; font-size: small; line-height: initial; margin: 0.5em 0px 0em 25px; } #productDescription_feature_div > h2.default { color: #CC6600; font-size: medium; margin: 0 0 0.25em; } #productDescription_feature_div > h2.books { color:#333 !important; font-size:21px !important; line-height: 1.3; padding-bottom: 4px; font-weight: normal; margin: 0px; } #productDescription_feature_div > h2.softlines { color:#333 !import