According to the description of this item it works on 300 Rebel. "Puig Engine Guard Honda Rebel 300/500 17'-20' C/Black" The Rebel 300 has a long bolt through the engine mount. When this screw is removed to put the guard on the motor without support. This should include a longer bolt to compensate for the extra length needed for the guard instead of two bolts, one for each guard, that don't go through the motor mount.
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