Onyx Racing Products cog spacer packs complement your singe-speed or gearbox setup perfectly! The pack is intended to be used with Shimano HG freewheel driver to achieve a perfect chain line.
- Available in two models: HG and HGSS.
- HG pack consists of seven spacers totalling 18.9mm in width.
- HGSS pack consists of four spacers totalling 7.3mm in width.
- Knurled surface finish as a hallmark of utmost precision.