In 2001 the Fury Expert was released.

All Fury Experts have:
   Metal head block/plastic blade grips (4mm blade bolts)
   Plastic tail gear box
   G10 frames (Carbon gear plates)
   Servo supports
   Carbon 31.5" boom (Uses 680/690 mains with 105/95 tail blades

The Original model had:
   Gold clutch/auto hub.
   Frames with no Logo cutout at tail block.
   Spacers between engine mounts.
   Lower frame rails versus lower plate
   No cutout in swash plate to access inner balls.

Late 2001 updates:

Logo on rear of frame - The "XL" cutout was added.

Auto rotation Hub update - The early gold auto rotation hubs had a problem where the bearing sleeve would slip inside the hub. This was resolved by grinding flats on the sleeve and inserting set screws in the hub.

Early 2002 updates:

Two changes were made to stiffen the frame assembly. According to X-Cell "These two changes have SIGNIFICANTLY enhanced the rigid nature of the frame, …"

Motor mount spacers - The two spacers were replaced with the block #115-53.

Bottom frame rails - The bottom frame rails and spacers were replaced with the g10 bottom plate    #115-57.

Late 2002 updates:

Swash plate update - The original swash plate did not have the cutouts for getting to the inner links. The updated titanium swash plate with the cutouts was added.

Clutch driver update - The bearing block was changed to a threaded block (versus through holes) to prevent bearing preload. The Driver bearing sleeve was updated from aluminum to steel.

The new bearing block can be identified by having threaded mounting holes. I believe the new driver units can be identified by the set screws in the clutch driver.

Early 2003 updates:

Clutch Bell - Updated to black color.

Mid 2003 updates:

Frame logo - The "XL" cutout was changed to "Fury".

Parts coloring - All gold and black replaced with titanium color.

Tank Fitting - The original tank had a straight fitting feeding the engine. This required the bubble in the side of the canopy. In 2002 the angle fitting was released but as an option. Sometime in 2003 it became standard in the kits.