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  • Thomson Elite Layback Seatpost
  • Thomson Elite Layback Seatpost
From $82.99 - $94.99
  • RRP$131.99
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Thomson Elite Layback Seatpost

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 we 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.

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.

We have a 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 our grip length.

The Thomson seatpost design incorporates a bending fuse to prevent catostrophic failure. All brand-x seatposts we 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 we 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.

Thomson Elite Layback Seatpost Features:

  • Every component of the Thomson seatpost is 100 percent American made. This includes all fasteners and forgings.
  • 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.
  • Every production lot of seatposts will have ultimate strength and fatigue tests performed. Our on going testing program insures that every production lot of seatposts meets Thomson standards.
  • 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
  • Setback: 16mm

Buy Thomson Elite Layback Seatposts from Chain Reaction Cycles, the world's largest online bicycle store.

  • Colour: Black, Silver
  • Length: 330mm, 410mm, 367mm, 250mm
  • Material: Alloy
  • Diameter: 28.6mm, 30.0mm, 32.4mm, 31.6mm, 27.2mm, 26.8mm, 30.9mm
Rated 4.7 out of 5 by 63 reviewers.
Rated 5 out of 5 by Great Shifts my weight further to the rear wheel giving me better grip when climbing up hills 05 August 2014
Rated 5 out of 5 by Amazing quality as usual from Thomson I had been using Thomson Elite Seatposts always and I ordered the layback model as I needed a better fit for my new bike. As always, the Elite seatposts come with amazing build quality and machining, they are lightweight and strong (stood the test of many crashes)! 08 July 2014
Rated 5 out of 5 by Mecanizado preciso, acabado destacable Tiene un diseño limpio y minimalista, sin gráficos estridentes y que encaja con una bici donde cada pieza tiene, por encima de todo una función y precisión, sin necesidad de llamar la atención para afirmar su calidad. El mecanizado aguanta muy bien pequeños roces y después de varios meses de uso intenso sigue sin tener ningún rasguño. No tiene crujidos ni se resiente por cargar con un ciclista pesado. 12 May 2014
Rated 5 out of 5 by What a seatpost! I was looking for an alternative to the FastForward seatpost for my Look 585 which I transformed into a TT bike. I choosed the Thomson because I found it way much classier, and so much cheaper than the Fast Forward Carbon Very easy to adjust, it is shipped with a nice cover. Before this seatpost I had a Brand-X Inline which was quite good, but I was too far from my bars. My bike is currently equiped with a flipped Thomson (to be set forward) and my position is now very comfy : it totally changed my ride. 07 April 2014
Rated 5 out of 5 by Полезная вещь если у вас коротковата рама. Выглядит красиво. Лёгкий, по сравнению с подседельными штырями, которыми комплектуют велосипеды перед продажей. Действительно отодвигает на 1,5-2 см. Нормально себя чувствует под весом в 100 кг. 04 April 2014
Rated 5 out of 5 by Light, great looks, gives that little extra adjustment possibility I'm not going to comment on aesthetics, that's for each one to decide (just will say that I find it looks great, with excellent finishing, bit understated, but that's all); what I'll say is that it really makes a difference in terms of position adjustment. It replaced a 400 mm inline seat post, with which I just couldn't find the right position on the bike, with the Thomson, what with the extra 1 cm length and the setback, it's now perfect, and what's more, I don't have to run the seatpost as close to the min insertion line as I had to with the former 400 mm one, so added security there. Bit expensive, though; however, as it's a one of a kind item (length and setback wise), you do get what you pay for. Overall, very happy with the purchase. 05 March 2014
Rated 5 out of 5 by Great quality, very light. Awesome product but the only issue I had mounting this post to my 99 Gary Fisher Pro Caliber was that there was only just enough angle left to have my saddle level and no more adjustment left if I wanted to put the nose down. This issue only applies to the setback post. Otherwise beautiful. This is my second post from them. 24 January 2014
Rated 4 out of 5 by Super strong but elegant I was between L and XL frame sizes on a Charge Cooker 29er, but went for the L as I didn't want the bike to handle like a gate! However, it felt slightly cramped with my feet a little too far forward on the pedals... Fitting this saddle post made all the difference, and with the saddle pivot allowing it to be adjusted to the nearest degree, essentially tailored the bike to my fit and reach. I weigh 215 lbs and have the saddle quite high, and the post feels rigid and strong. I am sure it will last a lifetime, and although pricey, it is well worth it. 05 January 2014
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I have a madone 4.7 2011 and need to replace the seatpost. the size isn't on the existing post as markings have rubbed off, not sure if it is a 27.2 or 26.8 and can't find info on google, are u able to advise me off the correct size
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Not being a Trek dealer I can't be sure, and their online archive doesn't specify it either, but I imagine it will be a 27.2mm post size. Your best option is to either measure it with digital calipers, or contact your nearest Trek dealer who should be able to double check it for you.
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