Burgtec 4-bolt 104mm BCD Thick Thin Chainring

A thick/thin chainring for a four-bolt, 104mm BCD crank setup. Burgtec designed the tooth profile to work with a clutch rear derailleur, helping keep the chain in place when the trail gets rough.

The aluminium ring comes in 30t, 32t, 34t and 36t options. The 30t has a specific fitting requirement: its threaded holes need M8 x 0.75mm x 8mm chainring bolts. That requirement applies to the 30t ring.