The Thomson Elite Seatposts are exceptionally strong and light weight, in fact they are 40% stronger on ultimate strength test than the strongest production seatposts on the market.
They also have extreme durability with over double the fatigue life of any other production models Thomson have tested. The tube and head of the Thomson Seatpost are integral-machined from one single piece of high strength 7000 series aluminium. The head is not pressed or bonded in. This allows for superior strength and minimum weight, allowing higher strength at low weights.
And speaking of weight it is also amazingly lightweight - approximately 188 grams (250 length) for road bikes and 228 grams (330 length) for mountain bikes. Thomson Elite Seatposts feature a natural ellipse bore inside tube for optimum strength to weight ratio.
All Thomson Seatposts have a long 1.614 inch (41 mm) seat rail grip length, which helps to prevent seat rail bending from impact loads. Most brand-x seatposts have grip lengths of .500 inch or even shorter than Thomson’s grip length.
The Thomson Seatpost design incorporates a bending fuse to prevent catastrophic failure. All brand-x seatposts they 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 they tested flew apart at less than 150 foot-lbs of torque. Under severe impact the Thomson seatpost would bend slightly and allow 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, and has infinite tilt adjustment minus 5° and plus 29°. The seatposts also have a very low profile clamp, so there is no seat interference, with the swivel nuts down between the seat rails. Every seatpost also has impact absorbing clamps, so the clamps, head, and assembly will spread and flex on impact to protect seat, rails, seatpost and rider. A great benefit of Thomson’s adjustment system is that adjustments can be made to the tilt of the seat without moving the seat forwards or backwards.
Every production lot of seatposts will have ultimate strength and fatigue tests performed in Thomson’s on going testing program to insure that every production lot of seatposts meet Thomson standards. With Thomson seatposts you get the best of both worlds with an extremely lightweight, high performance seatpost that can is strong enough and durable enough to ride the toughest multistage races out there.