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Bike seat posts 4x250mm - bike,
$10.82
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Bike seat posts durable - posts,
$10.59
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Bike seat posts - bike, 25.4x300mm
$14.11
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Bike seat posts 6x450mm - posts, 31.6x450mm
$31.79
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Bike seat posts 2x250 mm - posts, 27.2x250
$10.73
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Bike seat posts 4x300mm - bike,
$13.89
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Bike seat posts - x, 500mm
$20.70
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Bike seat posts 6x200 - seat, mm
$12.04
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Bike seat posts 4x250mm - bike, 25.4x250mm
$11.29
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Bike seat posts 2x300mm - posts, 27.2x300mm
$22.04
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Bike seat posts 6x300mm - bike,
$13.86
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Bike seat posts - bike,
$13.29
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Bike seat posts - seat,
$29.82
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Bike seat posts 2x300mm - bike,
$32.99
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Peloton bike seat post repair - post,
$50.00
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Bike seat posts 4x300 mm - seat, 25.4x300
$14.93
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New kalloy bicycle - bicycle, post
$15.95
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Universal piece 1 - universal,
$15.40
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Bike seat posts 4mmx450mm - seat, 25.4mmx450mm
$13.49
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Bike seat posts 6x500mm - bike, 28.6x500mm
$25.11
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Bike seat posts - posts, 27.2x500mm
$26.76
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Bike seat posts 2x500mm - bike, 27.2x500mm
$27.39
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Bike seat posts 2x250mm - bike,
$12.19
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Bike seat posts 2x350mm - posts, 27.2x350mm
$19.99
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Bike seat posts - bike,
$11.89
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Bike seat posts - posts, 27.2x250mm
$23.37
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Bike suspension seatpost - bike,
$26.95
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Bike seat posts 4x300mm - seat, 25.4x300mm
$42.34
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Bike seat posts 9x300 mm - bike, 30.9x300
$25.99
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100mm bike seat post adapter - seat,
$11.69
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Bike seat posts - seat, 27.2x500mm
$31.34
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Bike seat posts 4x400mm - seat,
$25.49
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Bike seat posts - bike,
$25.99
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Bike seat posts 2x300 mm - seat, 27.2x300
$12.77
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Universal piece 1 - universal,
$15.19
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Universal piece 1 - universal,
$24.90
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New kalloy bike bicycle - bike, alloy
$23.95
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Bike seat post 4x300mm - bike,
$13.75
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Bike seat posts - seat, mm
$27.12
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Bike seat posts 8x400mm - bike,
$34.19
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Bike seat posts 6x450mm - bike,
$18.39
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Bike seat posts 4mm 250mm - bike,
$12.50
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Bike seat posts - posts, 28.6x300mm
$24.85
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Bike seat post 4x300mm - seat,
$23.47
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Bike seat posts 2x250mm - posts, 27.2x250mm
$14.27
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Bike seat posts 4x300 - bike,
$11.89
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Bike seat post - seat, 27.2x300mm
$24.99
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Bike seat post 4x300mm - seat, 25.4x300mm
$13.10
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Bike seat posts - seat, 27.2x300mm
$13.99
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Bike seat posts 6x300mm - seat,
$22.99
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Mtb seat posts - seat,
$39.99
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Bike seat post - bike,
$22.59
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Bike seat posts 9x450mm - seat, 30.9x450mm
$25.93
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Bike seat posts 6x500mm - bike,
$29.06
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New kalloy bicycle seat - kalloy, post
$17.95
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Universal piece 1 - piece,
$14.44
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Bike seat posts 9x550mm - bike,
$35.43
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New kalloy bicycle - bicycle, straight
$15.95
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Kalloy bike seatpost 350mm pik - kalloy,
$22.75
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New kalloy bike bicycle alloy - kalloy,
$15.95
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Bike seat posts 2x400mm - bike, 27.2x400mm
$31.93
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Bike seat posts - bike,
$12.14
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Bike seat post 9x300mm - seat, 30.9x300mm
$19.79
Buy It Now
Bike seat posts - bike,
$34.99
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Bike seat posts - 28.6x450, mm
$13.94
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Pillar 7mm bike seat - seat, post
$12.95
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Bike seat posts 6x450mm - seat, 31.6x450mm
$31.34
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Bike seat posts - bike, 27.2x300mm
$34.99
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Mtb bicycle bike seat post - mtb,
$6.94
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Bike seat posts - seat,
$11.87
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Bike seat posts 4x300mm - bike,
$12.64
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Bike seat posts 8x400mm - seat,
$21.27
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Bike seat posts - bike,
$34.99
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Bike seat posts 2x400mm - bike, 27.2x400mm
$30.96
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2x300mm bike seat post - 27.2x300mm,
$13.39
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Bike seat posts - bike,
$14.30
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Bike seat posts - seat, 25.4x300mm
$16.62
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Bike seat posts 4x400mm - bike, 30.4x400mm
$16.16
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Universal piece 1 - piece,
$15.39
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Bike seat posts 4x300mm - seat,
$16.55
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New kalloy bicycle - kalloy, seat
$18.95
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Bike seat posts 6x200mm - bike, 28.6x200mm
$13.86
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Bike seat posts x 300mm - posts, 30.9
$20.78
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Bike seat post - bike,
$18.48
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Bike seat posts 4x200mm - seat, 25.4x200mm
$11.42
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Bike seat posts 9x300mm - seat, 30.9x300mm
$22.07
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Bike seat posts 2mmx300mm - seat, 27.2mmx300mm
$12.50
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Bike seat posts 4x300mm - posts, 25.4x300mm
$17.37
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Bike seat posts - bike, 27.2x350mm
$14.55
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Bike seat post 6x500mm - bike,
$28.99
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Kalloy bicycle seat post - seat, micro
$18.00
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2x300mm bike seat - bike,
$13.29
Buy It Now
Bike seat posts 2x300mm - bike,
$54.99
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Bike seat posts 9x300mm - posts, 30.9x300mm
$20.33
Buy It Now
Bike seat post - bike, 30.4x450mm
$22.78
Buy It Now
Bike seat post shim - shim, 100mm
$14.31
Buy It Now
Looking for more posts bike seat?
Search eBay live — fresh results filtered for the best value, updated every hour.
Browse 96 posts bike seat listings currently in our index. Prices range from $6.94 to $54.99, with an average of $20.75. Whether you are hunting for a bargain or looking for a top-spec model, the selection below covers all price points — new, used and refurbished. More about posts bike seat →
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Whether you are looking for a brand-new or second-hand posts bike seat, eBay offers one of the largest selections available online. With 96 active listings at the time of this page's last update, you have plenty of choice across different conditions, sellers and price points. The cheapest option currently starts at $6.94, while premium listings can reach $54.99 — giving you a wide budget spread to work with. The average price of $20.75 can serve as a useful benchmark: listings below this tend to be used or auction-style, while those above often include extra accessories, warranties, or are sold by professional sellers with high feedback scores. Always check the seller's feedback rating and return policy before committing to a purchase. If you need the item quickly, filter by "Buy It Now" to avoid the uncertainty of auctions. For used items, look closely at the condition description and photos — terms like "good", "very good" and "like new" can mean very different things depending on the seller.