39T ALUMINIUM CHAINRING
for bmx-opc bottom bracket / crank
JOHNSON
- teeth number: 39
- chain pitch: 1/2-1/8
- mounting hole diameter 23,8 mm ( 15/16" - 24 mm system)
- the distance of the edge of the small hole from the proximal edge of the central hole 17.5 / 28 mm
- colour: black anodized
- material : aluminium 7 mm
- overall diameter 163 mm
fits all cruisers , customs , choppers
with OPC / BMX crank - one piece or 3-piece replacement
