Here are all the options parts for the Xray XB4 2020 and olders
Reference 06364182
Brand: XRAY
SLIPPER CLUTCH SPRING C=46 - BLACK - 364182
Reference 06364912-G
Brand: XRAY
COMPOSITE GEAR DIFFERENTIAL CASE - LARGE VOLUME - GRAPHITE - 364912-G
Reference 06364920-G
Brand: XRAY
COMPOSITE GEAR DIFFERENTIAL COVER - LARGE VOLUME - GRAPHITE - 364920-
Reference 06361108
Brand: XRAY
XB4'20 ALU CHASSIS - SWISS 7075 T6 (2.5MM) - 361108
Reference 06363123-H
Brand: XRAY
COMPOSITE LONG SUSPENSION ARM REAR LOWER LEFT - HARD - 363123-H
Reference 06368022
Brand: XRAY
ALU SHOCK SPRING RETAINING COLLAR -2MM (4) - 368022
Reference 06365202
Brand: XRAY
ECS FRONT DRIVE SHAFT 83MM WITH 2.5MM PIN - SET - 365202
Reference 06365224
Brand: XRAY
ECS DRIVE SHAFT 83MM WITH 2.5MM PIN - 365224
Reference 06369811
Brand: XRAY
BRASS CHASSIS WEIGHT 20G (2) - 369811
Reference 06363113-G
Brand: XRAY
LONG SUSPENSION ARM REAR LOWER RIGHT - GRAPHITE - 363113-G
Reference 06363123-G
Brand: XRAY
LONG SUSPENSION ARM REAR LOWER LEFT - GRAPHITE - 363123-G
Reference 06361191
Brand: XRAY
BRASS REAR CHASSIS BRACE WEIGHT 40G - 361191