Working with chain device experts MRP, Truvativ have developed the X-Guide, a device compatible with BB-Mount, ISCG and ISCG 05 fitting.
It uses a replaceable skid plate design combined with a lower guide and sealed bearing pulley system. Combined with a front mech, chain drops should be completely eliminated.
It’s fully adjustable and its low profile and sleek design means no interference to your riding. It’s light at 155g too.