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.
Remove and clean seat post.
Check size with Park Tool DC-1 caliper.
Using an adjustable wrench ("Poor
Man's Caliper") to measure
SELLE ANOTOMICA Black or Red, Waterproof Cost $150
CHILD’S SEAT Cost $40
TANDEMS EAST PAVE SADDLE Cost $55
TERRY BUTTERFLY Ti RAILS WOMENS Cost $120
TERRY FLY Ti RAILS MENS Cost $120
TERRY LIBERATOR GEL Men's or Women's Cost $85
THUDBUSTER ST Shock Post
Available in 25.4 or 27.2 Cost $179
CREEK Thudbuster Rebuild Kit with Tool $45 no