22.2mm

The Answer BMX carbon Pivotal seat post features a full carbon post and an aluminum Pivotal seat attachment.  Designed to work with any Pivotal. S...

The Avian Carbon Pivotal seat post features a full carbon post with alloy Pivotal seat mount. SPECS: Three sizes: 22.2mm, 26.8mm and 27.2mm Glos...

PRODUCT DETAILS Crupi’s Pivotal seat posts are lighter in weight than traditional posts and a much more simple seat installation process....

All are 250mm long   WEIGHT:  22.2: 4.8oz 25.4: 6oz 26.8: 5.55oz 27.2: 5.7oz   COLOR OPTIONS: BLACK BLUE POLISHED RED

The seat post extender is made for racers when you need to warm up or cool down after a race, or for when you want a more comfortable sitting posit...

CS Seat Post Extender for cool downs and great for riding on your trainer comes in 27.2 and 22.2 

PRODUCT DETAILS Light weight aluminum seat post designed to work with any Pivotal seat.  The Supercross Pivotal post comes in 22.2mm (4.5"...

PRODUCT DETAILS SPECS: STYLE: Pivotal design for Pivotal seats THREE SIZES: 27.2mm. 26.8mm and 22.2mm LENGTH: 11.8"/300mm for 27.2mm and ...