Gregg's customs is a big name in motorcycles.....i found him in 07 when i need to buy some bike parts. he makes PERFECT stuff. and when it comes to questioning the durability of delrin....well its what ALL motorcycle crash sliders/frame sliders are made out of...in other words, when you crash your 400 lbs. sport bike, the delrin slider takes all the force of the crash and is designed to hopefully minimize the damage to your bike....so yes its EXTREMELY durable.