1/10 Cliffhanger High Performance Clear Body 12.3 (313mm) W> > Overview Introducing the all new Cliffhanger High Performance Rock Crawling competition body from Pro Line that was developed specifically for 12. 3" wheelbase Class 2 and Class 3 vehicles. Scale competition crawling is a growing part of the overall rock crawling movement and Pro Line's Cliffhanger body provides everything that these competitors have been asking for. The Cliffhanger features a pinched front end and a dove tailed rear end for