The Burgtec ThickThin Cinch Chainring. Burgtec replacement front ring for your RaceFace Cinch direct mount cranks, superb quality and chain retention capabilities. Finished in classy black colour way with Burgtec Logo. Burgtec ThickThin Cinch Chainring Features Designed and manufactured in the UK Colour: Burgtec Black Use in conjunction with clutch rear derailleur for best results No need to use a chain device For drivetrains 1×9, 1×10, 1×11 Material 7075 T6 Alloy