Amazon.com : CYSKY Bike Seatpost 27.2 x 400mm with Bike Seatpost Shim 28.6mm 30.9mm 31.6mm, Suspension Seatpost for Mountain Bike Road Bike MTB BMX : Sports & Outdoors
ZOOM Suspension Bike Seatpost Shock Absorber Damping Alu MTB Mountain Bicycle Seat Post 27.2 28.6 30.0 30.4 30.8 31.6 31.8 33.9 - AliExpress
DJC Suspension Seatpost Shock Absorber Damping Alu for MTB Bicycle Seat Post 25.4 27.2 28.6 30.1 30.4 30.9 31.6 33.9 X350MM - Walmart.com
MTB Suspension Seatpost 27.2/28.6/30.4/30.9/31.6*400mm Bicycle Seat Post 45mm Travel Road Bike Shock Absorb Damping Seat Tube - AliExpress
SUNTOUR NCX-12P Suspension Seatpost 27.2/28.6/31.6mm MTB Bike Absorber Seat Post | eBay
Amazon.com : Fito 28.6mm x 350mm Bicycle Suspension Seat Post Seatpost with Clamp - Black : Sports & Outdoors
Amazon.com : DJC Bike Suspension Seatpost Rubber MDU Memory Damper Shock Absorber Seat Post Ultralight Aluminum Body 26.8 27.2 28.6 30 30.4 30.9 31.6 mm MTB Road Bike(26.8mm Black) : Sports & Outdoors
MTB Bike Saddle Seat Post Alloy Hydraulic Suspension 28.6/30/30.4/30.8/33.9 mm | eBay
Zoom Ultra Light Aluminum Alloy Bicycle Seatpost 27.2 28.6 30 30.4 30.8 31.6 33.9mm MTB Bike Suspension Seatpost - China Bicycle Seatpost, Cycle Seat Post | Made-in-China.com
DJC Suspension Seatpost Straight Pillar Headless Bike Seat Post Shock Absorber for City Bike MTB 25.4 27.2 28.6 30.4 30.9 31.6mm measure diameter before buy 28.6mm*350mm