Here are all the options parts for the Xray X12 EU-US 2020 and olders
Reference 06303123-K
Brand: XRAY
ALU SHIM 3x6x2.0MM - BLACK (10) - 303123-K
Reference 06303125
Brand: XRAY
ALU SHIM 3x6x3.0MM (10) - 303125
Reference 06305823
Brand: XRAY
ALU PINION GEAR - HARD COATED 23T / 64 --- Replaced with #305973 - 30
Reference 06372176
Brand: XRAY
"SPRING 4.25 COILS 3.6x6x0.4MM; C=1.5 - GOLD (SOFT) (2) - 372176"
Reference 06373584
Brand: XRAY
SIDE SPRING C=0.6 - SILVER (2) - 373584
Reference 06374990
Brand: XRAY
GEAR DIFF GASKET (4) - 374990
Reference 06378092
Brand: XRAY
SHOCK SPRING C=1.5 - SILVER - 378092
Reference 06378160
Brand: XRAY
SIDE SHOCK SHAFT - 378160
Reference 06931438
Brand: XRAY
"BALL-BEARING 1/4""X3/8""X1/8"" STEEL SEALED - OIL (2) - 931438"
Reference 06378098
Brand: XRAY
SHOCK SPRING C=3.1 - BLACK - 4 DOTS - 378098
Reference 06303121-K
Brand: XRAY
ALU SHIM 3x6x0.5MM - BLACK (10) - 303121-K
Reference 06303122
Brand: XRAY
ALU SHIM 3x6x1.0MM (10) - 303122