Everyone loves to have a portable ramp- something they can move in and out of the driveway, street or side yard. At OC Ramps, we offer several portable and mobile skateboard ramps; quarterpipes and spine quarterpipes. The bigger quarterpipes have wheels on the back of them- making it easy to tilt back and push around to the garage or street. We had a few of our homies skate the 3' wide Quarterpipe, Spine and 4' wide Quarterpipe in the images and video clips below.. Check out the video (below) showing our 4' Quarterpipe Below are several images of the 4 foot wide Quarterpipe skate ramp kit for $499 and FREE shipping! Below you'll see a new video for the 3' Spine and Quarterpipe ramps.