TheBurgtec ThickThin GXP Chainring. Got GXP cranks? Well, looks like your gonna need a Burgtec GXP Thick Thin Chainring in your life then. Designed and manufactured in the United Kingdom. And tried and tested in MTB heaven the Peak District. Burgtec ThickThin GXP Chainring Features Keeps your chain on Designed for GXP cranks Designed and manufactured in the UK More info