Here are all the options parts for the Xray X1 2018 and olders
Reference 06378170-K
Brand: XRAY
ALU SHOCK BALL JOINT SCREW - BLACK - 378170-K
Reference 06378112
Brand: XRAY
COMPOSITE PARTS CENTER DAMPENER FOR 1-PIECE CHASSIS - 378112
Reference 06375012-H
Brand: XRAY
REAR AXLE SHAFT - HUDY SPRING STEEL™ - XRAY
Reference 0148412
Brand: HIRO SEIKO
X1'19 Titan/Alum Hex Socket Screw Set - 48412
Reference 06373240
Brand: XRAY
PIVOT BALL UNIVERSAL 6.0 MM - HUDY SPRING STEEL (2) - 373240