Here are all the options parts for the Xray XB4 2020 and olders
Reference 06323522
Brand: XRAY
LEXAN REAR WING 0.5mm - LUSH - 323522
Reference 06335030
Brand: XRAY
DIFF BEVEL & SATELLITE GEARS (2+4) - 335030
Reference 06365878
Brand: XRAY
COMPOSITE 3-PAD SLIPPER CLUTCH SPUR GEAR 78T / 48 - 365878
Reference 06972030
Brand: XRAY
SILICONE O-RING 3x2 (10) - 972030
Reference 06369912-H
Brand: XRAY
4WD FRONT WHEEL WITH 12MM HEX - WHITE - HARD (2) - 369912-H
Reference 06303123-O
Brand: XRAY
ALU SHIM 3x6x2.0MM - ORANGE (10) - 303123-O
Reference 06363123-M
Brand: XRAY
COMPOSITE LONG SUSP. ARM REAR LOWER LEFT - MEDIUM - 363123-M
Reference 06335080
Brand: XRAY
DIFF PIN (2) - 335080
Reference 06323517
Brand: XRAY
LEXAN REAR WING - TEC - 323517
Reference 06329901-H
Brand: XRAY
2WD/4WD REAR WHEEL WITH 12MM HEX - WHITE -HARD (10) - 329901-H
Reference 06323523
Brand: XRAY
LEXAN REAR WING 1.0mm - LUSH - THICK - 323523
Reference 06303125-K
Brand: XRAY
ALU SHIM 3x6x3.0MM - BLACK (10) - 303125-K