Here are all the options parts for the Xray XB4 2020 and olders
Reference 06303142-K
Brand: XRAY
ALU SHIM 3x5x0.5MM - BLACK (10) - 303142-K
Reference 06368101
Brand: XRAY
FRONT SHOCK ABSORBERS - BIG BORE - SET (2) - 368101
Reference 06368201
Brand: XRAY
REAR SHOCK ABSORBERS - BIG BORE - SET (2) - 368201
Reference 06365872
Brand: XRAY
COMPOSITE 3-PAD SLIPPER CLUTCH SPUR GEAR 72T / 48 - 365872
Reference 06364102
Brand: XRAY
XB4 SOLID AXLE - SET - 364102
Reference 06362324
Brand: XRAY
ALU LOWER SUSP. HOLDER HS BULKHEAD -WIDE -FRONT-REAR - 362324
Reference 06363114-M
Brand: XRAY
SUSPENSION ARM REAR LOWER RIGHT - 3-HOLE - MEDIUM - 363114-M
Reference 06363124-M
Brand: XRAY
SUSPENSION ARM REAR LOWER LEFT - 3-HOLE - MEDIUM - 363124-M
Reference 0148202
Brand: HIRO SEIKO
XB4'18 Titanium Hex Socket Screw Set - 48202
Reference 06303121
Brand: XRAY
SET OF ALU SHIM (1.0MM, 2.0MM, 3.0MM) - 303121
Reference 06303122
Brand: XRAY
ALU SHIM 3x6x1.0MM (10) - 303122
Reference 06306200-O
Brand: XRAY
ALU SERVO MOUNT - ORANGE (2) - 306200-O