Remove your seat post from the frame then take a rag and clean off all dirt and crud so you can read the numbers. Check size using caliper tool. If you don’t have a caliper tool, you can always use a “poor man’s” caliper by taking an adjustable wrench and use it like a vernier caliper. Once the wrench is open to the correct size, measure the opening with a metric ruler.

When you are ready to reinsert seat post make sure you grease the post and the seat tube. This does not apply to carbon.

After you ride in the rain, make sure you pull both your seat posts out and check for water down the seat tube. Turn the bike upside down and watch for any water coming out, if you see any, dry out your seat tube so it does not damage any other parts.

$45

$50
Limited Qty

with Tool $55 no Tool $45
Rebuild kit is needed when you experience side to side play

$329

$70

$145
Women’s

$115

$65

$13 each
Size 31.8mm with 5mm allen key
Great replacement part for Cannondale, Co-Motion, Hokitika & some Burleys etc.

Aluminum $200
Carbon $300

Available in 27.2mm or 31.6mm

$279
Good for Stout Riders
Available in 27.2mm or 31.6mm

$249