MEC 350mm Alloy Seat Post 5021-428
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MEC 350mm Alloy Seat Post

Free shipping on orders over $50

Free store pickup

Order online, get it at your local MEC. It couldn’t be easier.


Rocksolid Guarantee

Shop with confidence. If it’s not working out, you can return it (consumables, undergarments and swimwear excluded).

Really. If it's not up to snuff after you use it (a couple times) you can still bring it back.

It lasts longer than 30 days, but not forever. We'll be fair about it.

Price match guarantee

Found a better deal in Canada? Up to 30 days after purchase – we’ll match it.

If you see a lower price for this exact item advertised online, in print or in a store, give us a call at 1 (888) 847-0770.

If it’s identical, brand-new, in stock, and sold and shipped by a Canadian-based retailer, we’ll match that price.


Show Description

An all-purpose aluminum seat post that's at home on or off the asphalt.

  • Cold drawn, seamless 6061 aluminum.
  • 20mm offset to rear.

Tech specs

Show Tech specs
  • 307g (25.4mm)
  • 330g (27.0mm)
  • 315g (27.2mm)
  • 338g (30.0mm)
  • 377g (31.6mm)
Ideal for Cycling
Material 6061-T6 aluminum
  • 25.4mm (25.4mm)
  • 26.8mm (26.8mm)
  • 27.0mm (27.0mm)
  • 27.2mm (27.2mm)
  • 30.0mm (30.0mm)
  • 30.9mm (30.9mm)
  • 31.6mm (31.6mm)
Offset 20mm
Length 350mm
Suspension No
Made in Taiwan