Page 1 of 2 - KNEX Roller Coaster Sets - posted in Roller Coaster Sets: Please add to this list of all the K'NEX roller coaster sets that have been produced: Original Roller Coaster Screamin' Serpent Rippin' Rocket Shark Run Storm Mountain Vertical Vengeance Lava Launch Hornet Swarm Dueling Coaster Loopin' Lightning. Find great deals on eBay for screamin serpent knex. Shop with confidence. Skip to main content. EBay Logo: Shop by category. Shop by category. Enter your search keyword.