Our Bump Cones are the original design to be a durable bump stop you can run all year but we found that when severely overloaded they can stretch far enough for the small end to get stuck inside the large end. We are discounting them significantly as once they are sold we will no longer produce more in a cone shape - the diamonds will be the shape going forward.
     Each kit contains 5 Cones, 1 of each stiffness - a Base Cup, Radiused Retaining Washer, Aluminum Shaft Spacers plus Compression vs Load Data for each stiffness when used with the Base Cup and Radiused Washer in the kit. 
     Designed for use on 1/2" shafts but can be slid over 9/16"/14mm shafts with a little effort.
     5/8" Shaft versions also available simply choose the option at checkout.