TheBurgtec ThickThin XT Chainring. The new XT and XTR group set is a thing of beauty. Make it rad with the new Burgtec Thick Thin chainring. Designed and manufactured in the United Kingdom. And tried and tested in MTB heaven the Peak District. Burgtec ThickThin XT Chainring Features Designed to keep your chain on Designed and manufactured in the UK More info