Bashguard OneUp ISCG05 Underbash: an ISCG05 mount with installation without crank removal.
| Feature | Specification |
|---|---|
| Mounting | ISCG05 |
| Compatibility | Boost and oval chainrings |
| Installation | Without crank removal; single-tool adjustment |
| Hardware | Stainless steel |
| Included bash plates | 28–30T / 32–34T / 36T |
| Bash material | Glass-reinforced thermoplastic |
| Required mounting tabs | Two ISCG05 tabs only |
| Chainring range | 28–36T |
| Chainline adjustment | 2.5 mm |
| Backplate | 7075 aluminium |
| Weight reference | 68 g with 32–34T bash plate |
| E-bike compatibility | Not compatible |
On frames with three ISCG05 tabs, confirm with the frame manufacturer that the lower tabs support a bashguard before installation.