Believe the hype, as Whitz Racing Products has all you need to get your R/C Cars dialed in with HyperGlide Ceramic Bearings and other high-performance products for the competitive R/C Racer. From the shop, to the track, increase drive train, reduce friction, #hyperglide along and just go faster with Whitz! Compatibility: Custom Works Rocket 5 & Custom Works Rocket 4.