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ShockStop Seatpost: Add Suspension to Your Bike by Redshift Sports — Kickstarter
Review: Redshift ShockStop may just change your mind about suspension seatposts - Bikerumor
Amazon.com : REDSHIFT ShockStop Suspension Seatpost for Bicycles, Shock-Absorber Bike Seat Post for Road, Gravel, Hybrid, and E-Bikes, 27.2mm x 280mm : Sports & Outdoors
Redshift Sports ShockStop seatpost breaks cover on Kickstarter | the accidental randonneur
Amazon.com : REDSHIFT ShockStop Suspension Seatpost for Bicycles, Shock-Absorber Bike Seat Post for Road, Gravel, Hybrid, and E-Bikes, 27.2mm x 280mm : Sports & Outdoors