Nimbus Double Bolt Seat Clamp – 28.6mm in Blue is a high quality double bolt that clamps the seat post more firmly than a single-bolted clamp or quick release clamp and helps reduce seat twist. This clamp has the Nimbus logo & fits seat post 25.4mm diameter. Available in a great range of colours; Black, White, Red, Blue, Yellow, Orange & Gold.

Note: 25.4mm refers to the diameter of the seatpost and internal diameter of the frame – the 25.4mm clamp fits frames with an external diameter of 28.6mm.