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Btwin 27.2 mm to 29.8 mm Seat Post, 27.2 mm diameter
Black seat post for 27.2 mm frames with 29.8 mm to 33 mm adapters.
Free shipping over $35
See our return rules
Free pickup
San Francisco, 735 Market St. Options
Select an available color and size to see options.
Product Features

Compatibility
For 27.2 mm frames with 29.8 to 33 mm adapters and saddles with rails
Durability
6061 aluminum body and saddle rail clamp.
Easy to use
Adjustable and tilting seat clamp.
Product Customer Reviews

light and easy to carry and swap seats
Good product
I bought this to replace the seat post that I had as it was very heavy when riding. I used the shim that was supplied with the post so it was a tight fit and the post wouldn't slip down when riding....skip to a few months later my frame snapped under the seat post. Cracked and snapped the frame meaning I have to now buy a whole new bike as the frame is not safe even if I were to get it welded back together, it won't be safe to ride. So yeah, THANKS A LOT!!!! MOST EXPENSIVE SEAT POST I HAVE EVER BOUGHT, THE COST OF A NEW BIKE AND ALMOST MY LIFE..... I CERTAINLY WON'T BE BUYING FROM DECATHLON EVER AGAIN.
I've had two of these seatposts now on different bikes. Excellent value for money, and would have given 4 to 5 stars, but both posts failed after the two year guarantee ended. Definitely worth buying for a budget bike, but would recommend changing every two years.
Attractive and well priced...
Nice
Very good
Superb fitting
Great quality product
Packaging was Good It is a perfect seatpost for my cycle Trek Marlin 6
nyc
Quality is good, but description doesn’t state usable sizes (how much of 330 mm is to be kept inside frame at min), had to return as it wasn’t long enough for me
It's easily fitted with my city bike with out any assistance,now i getting my right riding height in bike
My old seat post was totally iron, this one in comparison felt lot lighter. The sddle mount can be tilted and is held by two screws. This is my first time using such seatpost, therefore, how long the screws will suffice, remains to be seen.
Well made.
Dear Darren, thank you for your time in leaving us with a 5-Star rating on our product. We are glad that we managed to delight you with the standards of our product. We really appreciate your loyalty with Decathlon. Please let us know if there is anything else we can improve on in the future. Thank you once again for your time and we hope to serve you again soon!
Hafizah
Additional Product Information
Composition
Bottle/Body
- 100% Aluminium 6061
Origin
Imported
Superior quality. Unbeatable prices.
For 40 years, Decathlon has delivered the best value in the retail sports industry by offering high-quality, sustainable and cost-effective products.
Decathlon makes the difference
-
Research and development
delivers high-quality cost-effective products
-
State-of-the-art production processes
minimize manufacturing costs
-
Optimized supply chain
reduces retail prices
-
Minimal retail footprint
lowers overhead and indirect costs

Btwin 27.2 mm to 29.8 mm Seat Post, 27.2 mm diameter
Your location: City, ST
Please enter a valid city with state or zipcode. Example: San Francisco, CA or 94101
Order online for
Heavy products return policy
If you return a product you will receive a refund for the purchase price plus any applicable sales taxes, less any non-refundable charges.
Decathlon will cover all shipping costs associated with your return except for items excluded from our return policy such as bikes, basketball hoops, snowboards, surfboards, tents, and other larger / heavier items.
Return costs for heavy products:
Weight Thresholds | Shipping within California | Shipping outside of California |
---|---|---|
> 9 lbs | $20.00 | $25.00 |
> 30 lbs | $50.00 | $65.00 |
> 100 lbs | $100.00 | $125.00 |
> 200 lbs | $200.00 | $230.00 |
If you return a product at any of our store locations, we will gladly help you find the best alternative product or refund you on the spot.
