The OneUp ISCG05 Underbash adds chainring protection without an upper chain guide. It suits a compatible bike that already has its own guide, or a rider who wants bash protection without adding another retention device.The compact two-bolt backplate carries a replaceable bash plate, with three sizes supplied for 28-36T chainrings. It can be installed without removing the crank, and 2.5mm of spacing adjustment helps clear the frame. For frames with two ISCG05 tabs. If the frame has three tabs, obtain frame-manufacturer confirmation that the lower tabs can support a bash guard before fitting. Not compatible with e-bikes. Includes 28-30T, 32-34T and 36T bash plates. 7075 aluminium and glass-reinforced thermoplastic construction. Manufacturer weight 68g with the 32-34T plate. Boost and oval-ring compatible within its fit range; no upper chain guide included. Specifications Mount Two-bolt ISCG05; three-tab frames require frame-manufacturer confirmation Capacity teeth 28, 36 Spacing adjustment (mm) 2.5 Material 7075 aluminium, Glass-reinforced thermoplastic Manufacturer weight (g) 32-34T: 68 Included bash sizes 28-30T, 32-34T, 36T Excluded use E-bikes Upper guide included No
