Girvin Flexstems are cool – Next up Entry Level Groupsets October 18th, 2011 Share The latest Coolwall vote has been declared! Girvin Flexstems are COOL. One centimetre of rubber sprung travel has been judged cool by the retrobike users Next up on the vote are Entry Level Groupsets. Are the groupsets many of us started on back in the 90s cool? As ever you decide!