Thompson seatposts are over 40% stronger on ultimate strength test than the
strongest production seatposts on the market.
Over double the fatigue life of any other production models
tested. The tube and head of the Thomson seatpost are integral-machined from one
single piece of high strength 7000 series aluminum. The head is not pressed or
bonded in. This allows for superior strength and minimum weight, allowing higher
strength at low weights.
Features and Specifications
Lightweight - approximately 188 grams (250 length) for road bikes and 228 grams
(330 length) for mountain bikes. Natural ellipse bore inside tube for optimum
strength to weight ratio.
Long 1.614 inch (41 mm) seat rail grip length - This helps
prevent seat rail bending from impact loads. Most brand-x seatposts have grip
lengths of .500 inch or more shorter than Thomson’s grip length.
Bending fuse to prevent catostrophic failure. All brand-x
seatposts tested - every one of them - failed in catastrophic failure with the
seat and clamp components - and sometimes pieces of the tube and head - flying
off in all directions. This type of failure would dump the rider.
The Thomson seatpost has a clamp, head, and upper tube strong
enough to withstand 350 foot-lbs of torque. The tube will start to yield and
bend at the seat tube clamp at about 250 foot-lbs of torque. Remember all
brand-x posts tested flew apart at less than 150 foot-lbs of torque. Under
severe impact the Thomson seatpost would bend slightly and allows the rider to
come to a safe stop or finish the ride. The ride could continue.
The Thomson seatpost has all parts captive and can easily be
attached to a seat without disassembly.
Infinite tilt adjustment minus 5° and plus 29°.
Very low profile clamps - no seat interference - swivel nuts
are down between the seat rails.
The designs and materials have passed extensive life and
ultimate strength tests.
Impact absorbing clamps - clamps, head, and assembly will
spread and flex on impact to protect seat, rails, seatpost and rider.
Adjustments can be made to the tilt of the seat without moving
the seat forwards or backwards.
Easy on seats - allows seat to survive heavy impact loads
without bending rails.