Trek Domane MkIII Carbon Internal Seat Mast Cap

Trek Domane MkIII Carbon Internal Seat Mast Cap The Trek Internal Seat Mast Cap is designed to fit 2020 Domane MkIII models. It has a choice of 5mm or 20mm offset and is incredibly light; constructed from premium carbon fibre. The range of colours means you can match it perfectly with your bike. Please note; the saddle clamp ears (7mm round and 10mm oval ears are sold separately); images are for the representation of the colourway only.