![Bosch O-Ring for Cog Mounting with 1270016428 of Active Line | Performance Line | Performance Line CX - 1270014024 Bosch O-Ring for Cog Mounting with 1270016428 of Active Line | Performance Line | Performance Line CX - 1270014024](https://images.bike24.net/i/mb/0f/c0/75/236683-00-d-458056.jpg)
Bosch O-Ring for Cog Mounting with 1270016428 of Active Line | Performance Line | Performance Line CX - 1270014024
![The o-ring found between the chainring and lockring on Bosch G4 systems is missing with my e*spec ring. Is that correct? – ethirteen support The o-ring found between the chainring and lockring on Bosch G4 systems is missing with my e*spec ring. Is that correct? – ethirteen support](https://support.ethirteen.com/hc/article_attachments/360082068711/Bosch_o-ring.jpg)
The o-ring found between the chainring and lockring on Bosch G4 systems is missing with my e*spec ring. Is that correct? – ethirteen support
![Bosch O-Ring for Cog Mounting with 1270016428 of Active Line | Performance Line | Performance Line CX - 1270014024 Bosch O-Ring for Cog Mounting with 1270016428 of Active Line | Performance Line | Performance Line CX - 1270014024](https://images.bike24.net/i/mb/cc/0e/15/236686-00-d-458060.jpg)
Bosch O-Ring for Cog Mounting with 1270016428 of Active Line | Performance Line | Performance Line CX - 1270014024
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