The head clamps the saddle’s rails in twelve places, hence even vulnerable carbon saddle rails are not unduly stressed. The head with its 6 mm Ti6Al4V titanium bolts is strong enough even for the toughest MTB ride.
The actual tube’s highest stressed sections consists of up to 19 layers of extremely thin carbon fibre prepreg, while its less stressed sections are sufficiently strong with as little as 10 layers. Unfortunately this is a complicated design, to complicated for cheap Asian production. Seatpost built to a price in China as a rule come with constant wall-thickness.
This makes production easy, it also makes the resulting seatpost heavier than necessary. Seatposts in particular require hundreds and hundreds of destruction tests to arrive at the lightest possible solution for every length and diameter without sacrificing the final products strength. We do of course also include rider’s weight into our design equations; light riders don’t need to carry the extra weight of a standard seatpost designed for a user much heavier than they are.
Weights and sizes of our standard seatposts
|Total length in mm ||250 ||300 ||350 ||400|
|Minimum insert in mm ||75 ||80 ||85 ||90|
|Length outside the frame in mm ||125-175 ||160-220 ||195-265 ||230-310|
|Weight ø27,2 for road ||90 g ||97 g ||102 g ||-|
|Weight ø31,6 for road ||93 g ||100 g ||107 g ||-|
|Weight ø27,2 for MTB ||- ||98 g ||107 g ||115 g|
|Weight ø31,6 for MTB ||- ||106 g ||115 g ||123 g|
|Weight ø34,9 for MTB ||- ||113 g ||122 g ||132 g|
Our seatposts are reinforced where they are stressed by the seat clamp, hence their range of adjustment is limited. Do not buy a long seatpost to cut it to size. We want to adjust strength and length of your seatpost to your requirements as good as possible; hence we need the seatpost length as measured from the top of the frame to the middle of the saddle’s rails.
Longer seatposts require more raw material, therefore we have to charge 395 € for the posts longer than 320 mm.