Exotek XB2 Flite Top Shaft

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The Exotek XB2 Flite Top Shaft is an ultra light top shaft option that has been drilled and the teeth narrowed for increased acceleration and a cooler running motor. In the world of ultra competitive stock racing at indoor tracks, every gram counts and there is no better way to separate yourself from the pack than having a more efficient and lighter drive train.

Less than half the weight of the stock top shaft and slipper and lighter still than our standard spur mount set, when combined with Exotek's special lightened spur mount (EXO1726), sold separately. Only 9.3gr complete with hardware and Exotek 69 spur- the stock assembly is over 20gr! Use alloy hardware for even more weight savings!


  • Compatible with the XB2 series but recommended for stock use only
  • Hard anodized 7075 alloy
  • Extremely light weight
  • Less rotating mass
  • Lower CG
  • Eliminates the need to cut a hole in the body for the top shaft
  • Eliminates slipper clutch - combine with Exotek's special lightened spur mount (EXO1726)
  • Must use Exotek or Kimbrough spur gears

Compatible Spur Gears:

  • Kimbrough
    • KIM301 66 tooth
    • KIM150 69 tooth
    • KIM143 72 tooth
    • KIM161 73 tooth
    • KIM162 74 tooth
  • Exotek
    • EXO1543 66 tooth
    • EXO1544 69 tooth
    • EXO1545 75 tooth
    • EXO1546 78 tooth

This product was added to our catalog on October 11, 2017