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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 31.6mm MTB Road Bike(26.8mm Black) : Sports & Outdoors
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Amazon.com : Suspension Seatpost Bike Seat Post: Bicycle Seat Post Shock 27.2 30.9 31.6 mm Aluminum Alloy Bike Seat Shock Absorber Damper Seat Post for MTB/ Road/ BMX Bike : Sports & Outdoors
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