What's Behind the Ride

 

FOCUSED ON COMFORT

Traditional seatpost systems place the clamping mechanism at a very high stress point on the frame, requiring the seat tube to be overbuilt to withstand the rocking forces of the post. The all-new Madone's seat mast design solves this problem by eliminating the post entirely and moving the clamping mechanism above the stress zone. This design not only achieves a 25% weight reduction compared to a standard carbon seatpost, but also allows the seat tube to flex in a more natural way, improving vertical compliance by 39% compared to last year's Madone.

Read More

Seatmast and Cap

Compared to other seat mast designs in the market, there is no cutting required on Trek's mast and cap design. This makes it the only design with the full range of adjustment found on inserted seatpost designs – in fact, the all-new Madone seat mast has the same amount of seat height adjustability as the '07 Madone with a 250mm post.

And just so the new Madone rider has all the fit options available, the seat mast will be available in three different offsets (10mm forward, 5mm and 20mm rearward) and two different lengths. Each cap also incorporates 6 degrees of lateral movement and infinite tilt adjustability. These various cap options, coupled with both Pro and Performance Fit frames ranging from 50cm to 64cm in 2cm increments, accommodates a much wider base of riders than ever before.

Two Offset Options

Standard cap with 20mm rearward offset

Standard cap with 20mm rearward offset

 

Tall cap with 20mm rearward offset

Tall cap with 20mm rearward offset

 

Vertical Compliance

Traditional seatpost systems place the clamping mechanism at a very high stress location on the frame, requiring the seat tube to be overbuilt to withstand the rocking forces of the post. A traditional seatpost design has +/- 80mm of frame and post overlap. The all-new Madone's seat mast design solves this problem by eliminating the post entirely and moving the clamping mechanism above the stress zone. This design not only achieves a 25% weight reduction compared to a standard carbon seatpost (as there is only 30mm of mast overlap), but also allows the seat tube to flex in a more natural way, improving vertical compliance by 39% compared to last year's Madone.

Deflection Chart

Seatpost vs. Seatmast

All-New Madone Seatmast

All-New Madone Seatmast

All-New Madone Seatmast

  • Ride tuned carbon lay-up (class-leading vertical compliance).
  • Material reduction = less weight.
  • Only 30mm of overlap needed because of relocated stress location.
  • Same range of seat height adjustability when compared to a 250mm seatpost used in previous Madone models.
 
 
Traditional Seatpost

Traditional Seatpost

Traditional Seatpost

  • Redundant materials = a heavier, more rigid structure.
  • Minimum of 80mm of seatpost insertion needed because of the high stresses in this area of the frame.