
Back suspension seat post, so the stoker (the person in the back) doesn't feel the bumps.

By the way, much to the amusement of all of you I'm sure, the preson in the front is called the Captain.
Your mom and I (ok I) just bought a tandem mountain bike with Marzocchi Bomber Shocks, Chris King headset, Weyless High Rise Bars, Back suspension seat post, new saddles , Mavic (Ceramics) Front Rim, Back Rim is not Mavic and Panaracer off-road tires included.
Should be here in a week or so, can't wait!
Look for us on a trail near you!