Amazon REDSHIFT  
REDSHIFT ShockStop Endurance Suspension Seatpost for Bicycles, 31.6mm x 400mm
RIDE FARTHER, FASTER, AND MORE COMFORTABLY – The ShockStop bicycle suspension seatpost is the perfect upgrade to your road, gravel, bikepacking, all-road, hybrid and e-bike with standard sizes to fit any brand of bike. More comfort at the saddle means you’ll be able to ride longer, go faster, and stay in control even on the roughest terrain. Choose from 4 lengths (280, 350, 400, and 450mm) and 4 diameters (27.2, 30.4, 30.9, and 31.6mm) in order to get the best fit for your bike.
DAMPEN BUMPS AND VIBRATION BY UP TO 60%! – Say goodbye to your sore butt and pain from riding and say hello to increased control, more confidence, and a super smooth ride. The patent-pending ShockStop Suspension Seatpost for bicycles reduces the effects of bumps, shocks, and road buzz by up to 60%!
REDUCE FATIGUE AND INCREASE EFFICIENCY – Stop wasting energy suspending your body to absorb impacts and vibrations. This shock absorber bike seatpost allows you to stay in the saddle and keep pedaling even over the most extreme terrain. Consistent power output and reduced fatigue enables you to go further and faster on the bike you already own.
35mm OF TUNABLE SUSPENSION TRAVEL – The ShockStop bike suspension seatpost has 35mm of tunable, ultra-responsive suspension travel. The optimized four-bar linkage ensures that your saddle angle remains constant through the full range of travel. Adjust the preload and swap in and out springs to find your perfect setup and match the seatpost to your preferred riding style.
EASY TO INSTALL AND MAINTENANCE FREE – The multiple diameter and length options allow this shock-absorbing seatpost to fit all modern bikes and installs in minutes (shims are available to fit additional sizes).
REDSHIFT ShockStop Endurance Suspension Seatpost for Bicycles, 31.6mm x 400mm RI
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