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Bicycle Seatposts and Parts

The piece that connects your saddle to the frame of the bike. The most important thing to know when shopping for a seatpost is the insertion diameter. This will be stamped at the base of an existing seatpost and will be measured in millimeters. The most common size is 27.2mm. It is very important that you replace a seatpost with one of an identical diameter.
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Kalloy 1mm Washers for Seat Binders 8mm ID, Bag of 10
$4.99
Availability: In Stock
Add to Cart    Part #: BO1261



Surly Constrictor Seatpost Clamp 30mm Black
$15.00
Availability: In Stock
Add to Cart    Part #: ST0001



Surly Constrictor Seatpost Clamp 31.8mm Black
$15.00
Availability: In Stock
Add to Cart    Part #: ST0002



Surly Constrictor Replacement Bolt 8mm
$3.00
Availability: In Stock
Add to Cart    Part #: ST0004



Surly Stainless Seatpost Clamp 30.0mm
$20.00
Availability: Out of Stock
Add to Cart    Part #: ST0010



X-Fusion Hilo 27.2mm Dropper Post 100mm with Remote
$199.99
Availability: In Stock
Add to Cart    Part #: ST0140



X-Fusion Hilo 30.9mm Dropper Post 125mm with Remote
$199.99
Availability: In Stock
Add to Cart    Part #: ST0143



X-Fusion Hilo 31.6mm Dropper Post 125mm with Remote
$199.99
Availability: In Stock
Add to Cart    Part #: ST0144



Problem Solvers 1.4mm Shim, 27.2mm Seatpost to 28.6mm
$8.99
Availability: Out of Stock
Add to Cart    Part #: ST0214



Problem Solvers 2.0mm Shim, 27.2mm Seatpost to 29.2mm
$8.99
Availability: Out of Stock
Add to Cart    Part #: ST0220



Problem Solvers 2.2mm Shim, 27.2mm Seatpost to 29.4mm
$8.99
Availability: In Stock
Add to Cart    Part #: ST0222



Problem Solvers 2.6mm Shim, 27.2mm Seatpost to 29.8mm
$8.99
Availability: In Stock
Add to Cart    Part #: ST0226



Problem Solvers 2.8mm Shim, 27.2mm Seatpost to 30.0mm
$8.99
Availability: In Stock
Add to Cart    Part #: ST0228



Problem Solvers 3.0mm Shim, 27.2mm Seatpost to 30.2mm
$8.99
Availability: In Stock
Add to Cart    Part #: ST0230



Problem Solvers 3.2mm Shim, 27.2mm Seatpost to 30.4mm
$8.99
Availability: Out of Stock
Add to Cart    Part #: ST0232



Problem Solvers 3.6mm Shim, 27.2mm Seatpost to 30.8mm
$8.99
Availability: Out of Stock
Add to Cart    Part #: ST0236



Problem Solvers 3.7mm Shim, 27.2mm Seatpost to 30.9mm
$8.99
Availability: Out of Stock
Add to Cart    Part #: ST0237



Problem Solvers 4.4mm Shim, 27.2mm Seatpost to 31.6mm
$8.99
Availability: In Stock
Add to Cart    Part #: ST0244



Problem Solvers 4.6mm Shim, 27.2mm Seatpost to 31.8mm
$8.99
Availability: In Stock
Add to Cart    Part #: ST0246



Problem Solvers 0.7mm Shim, 30.9mm Seatpost to 31.6mm
$8.99
Availability: In Stock
Add to Cart    Part #: ST0250



KS Supernatural Dropper Seatpost, 30.9, 75mm Travel, Black
$268.40



KS Supernatural Dropper Seatpost, 31.6, 75mm Travel, Black
$268.40
Availability: Out of Stock
Add to Cart    Part #: ST0299



KS Supernatural Dropper Seatpost, 30.9, 100mm Travel, Black
$268.40



KS Supernatural Dropper Seatpost, 31.6, 100mm Travel, Black
$268.40



KS Supernatural Dropper Seatpost, 30.9, 125mm Travel, Black
$268.40



KS Supernatural Dropper Seatpost, 31.6, 125mm Travel, Black
$268.40
Availability: Out of Stock
Add to Cart    Part #: ST0304



KS Supernatural Dropper Seatpost, 30.9, 150mm Travel, Black
$322.08



KS Supernatural Dropper Seatpost, 31.6, 150mm Travel, Black
$322.08
Availability: Out of Stock
Add to Cart    Part #: ST0306



KS LEV 272 Dropper Seatpost, 27.2, 100mm Travel, Black
$374.00
Availability: In Stock
Add to Cart    Part #: ST0307




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