Voodoo Hoodoo Mountain Bike Frame Joe Murray edition. Size 16 (centre to top of seat tube) This frame is brand new, and never built, the box has been opened for photos only. Please see all photos for other sizes, colour, and condition. The Joe Murray-designed frame is great. Tough enough to cope with a few crashes but still light, responsive and enthusiastic through the pedals, it’s the heart of a strong bike.