Trek Round Ultra-light Carbon Seat Mast Cap & 10mm Ears | Trek Bikes
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Trek Round Ultra-light Carbon Seat Mast Cap & 10mm Ears

$179.99 Model 27250
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Genuine replacement parts

Originally developed for the incredibly light Émonda SLR 10, the SLR seat mast cap is the lightest available for Trek bikes equipped with round seat masts.

Product details

  1. Lighter than the standard round carbon seat mast cap
  2. Direct fit on all Trek road bikes with round seat masts
  3. One bolt head design offers easy fore-aft and infinite angle adjustment
  4. Includes 10mm oval saddle clamp ears, 7mm round ears sold separately

More options


Size 135mm x 5mm 135mm x 20mm 175mm x 5mm 175mm x 20mm
Length 135mm 135mm 175mm 175mm
Offset 5mm 20mm 5mm 20mm
Rail compatibility Universal Universal Universal Universal
Material Carbon Carbon Carbon Carbon
We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colors, and materials.
Weights are based off Trek pre-production products at time of publication. Weights may vary in final production.

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