The #Seatposthugger Model 4.1 is the successor of the model 4 and has an additional brazed on clamp boss for adjusting the play on the seatpost for when the Hope QR clamp is released. This to enable easy sliding and wear adjustment on all different seatposts for Brompton. The seatposthugger is a luggage carrier which is designed to hold the Brompton front carrier block and clamps onto your Brompton 31.8mm seatpost. It's only compaitble with the plastic carrier block of Brompton and copies made by other brands like Trigo. It's not compatible with CNC-ed aluminium carrier blocks and not with the Eerder metaal #Allsteelcarrierblock

• Bronze flame brazed and Tig fusion welded
• 4130 thin wall Chromoly tube and laser cut Domex 700 high strength steel plate sections (the real deal! it's amazing)
• including a Trigo front carrier block,
• low friction Hope clamp with quick release in Silver, black, orange, purple, blue or red
• the original Brompton seat post sleeve
• weight complete Model 4.1 including a Trigo front carrier block: 340 gram