Exotek have released an ultra lightweight centre spool conversion set for the HB Racing D418 buggy. Using the kit reduces the drivetrain’s rotating mass for that extra boost in 13.5T and 17.5T spec racing as the completed spool set weighs only 23g with the spur gear. A machined 69T POM spur gear is included and bolts on to the lightweight alloy spool. The spool housing is also compatible with Exotek 66T, 69T and 72T Flite spur gears or standard 48p Kimbrough gears. The set requires the use of the stock diff cups, bearings, steel pins and large O-rings form the D418 centre diff.