This is a good question--the answer depends on your motorcycle and what you want to do with it. Extruded rubber chocks are an affordable option, as long time as you don’t expect to put heavy loads on them. Rubber deforms with heavy loads, and it’s not ideal for locations in extreme temperatures. For general purposes, an aluminum or steel chock outperforms extruded rubber chocks. They can ensure reliable security and durable performance in all climates.