HPI SAND BUSTER RIB TIRE M COMPOUND (170x60mm/2pcs) It doesn’t get any better than this for Baja 5B enthusiasts. HPI Racing is proud to announce sand tires for the Baja 5B… Sand Buster Rib front and Sand Buster Paddle rear tires! Now you can take your Baja 5B to the dunes and throw huge roosts of sand just like the real sand rails. Molded in HPI’s exclusive M Compound, Sand Busters Rib fronts have a rib down the center of the tire to cut through the sand for stable steering, and the Sand Buster Paddle rears have 10 large paddles for maximum traction in sand and soft dirt. Sand Buster’s are designed for the sand, but you can also run them in loose dirt and even in the mud! Sold in pairs, these tires are a direct replacement for the factory Baja 5B tires.