Here are all the options parts for the Xray XB4 2020 and olders
Reference 06368293
Brand: XRAY
REAR SPRING-SET L=57MM - 3 DOTS (2) - 368293
Reference 06363123-G
Brand: XRAY
LONG SUSPENSION ARM REAR LOWER LEFT - GRAPHITE - 363123-G
Reference 06364115
Brand: XRAY
3-PAD SHAFT FOR MULTI-ADJUSTABLE SLIPPER CLUTCH (MSC) - 364115
Reference 06369708
Brand: XRAY
BODY FOR 1/10 4WD OFF-ROAD BUGGY - GAMMA 4C - 369708
Reference 0148401
Brand: HIRO SEIKO
XB4'19 Titanium Hex Socket Screw Set - 48401
Reference 06303120
Brand: XRAY
SET OF ALU SHIM (0.5MM, 1.5MM, 2.5MM) - 303120
Reference 06303121-O
Brand: XRAY
ALU SHIM 3x6x0.5MM - ORANGE (10) - 303121-O
Reference 06303122-K
Brand: XRAY
ALU SHIM 3x6x1.0MM - BLACK (10) - 303122-K
Reference 06303122-O
Brand: XRAY
ALU SHIM 3x6x1.0MM - ORANGE (10) - 303122-O
Reference 06303123-K
Brand: XRAY
ALU SHIM 3x6x2.0MM - BLACK (10) - 303123-K
Reference 06303125
Brand: XRAY
ALU SHIM 3x6x3.0MM (10) - 303125
Reference 06323354-G
Brand: XRAY
COMPOSITE UPRIGHT REAR - GRAPHITE - 323354-G