X1 Pro: General
X1 Pro: General
Chainring Version Guide
Version 1.0 | Version 2.0 | Version 4.0 | |
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Mounting solution of the 219H motor chainring | Mounting on the freewheel The motor chainring mounts on the freewheel directly. | 104BCD The motor chainring mounts onto the freewheel/ torque sensor housing using the 104BCD mounting standard. | 104BCD Same as version 2.0. |
Mounting solution of the narrow-wide chainring | 104BCD | 104BCD | 104BCD |
Chainring cover | Old design | Old design; mounted on the 219H motor chainring | 104BCD mounting Thicker surface |
Bolt specifications |
