Here are all the options parts for the Xray T4 2018 and olders
Reference 06302537
Brand: XRAY
T4'20 ALU STEERING POST FOR DUAL SERVO SAVER (2) - 302537
Reference 06306204
Brand: XRAY
ALU SERVO MOUNT - BLACK - 306204
Reference 06306410
Brand: XRAY
ALU UNIVERSAL MOUNT - 306410
Reference 06302548
Brand: XRAY
ALU STEERING PLATE 8.0MM FOR DUAL SERVO SAVER - 302548
Reference 06308308-K
Brand: XRAY
ULP ALU SHOCK ABSORBER-SET - BLACK (2) - 308308-K
Reference 06302206
Brand: XRAY
GRAPHITE EXTENSION PLATE FOR ALU STEERING BLOCK (2) - 302206
Reference 06302257
Brand: XRAY
ALU STEERING BLOCK - BLACK - SWISS 7075 T6 - 302257
Reference 06305308
Brand: XRAY
ECS BB DRIVE SHAFT 52MM - SET - HUDY SPRING STEEL™ - 305308
Reference 06305318
Brand: XRAY
ECS BB DRIVE SHAFT 52MM - HUDY SPRING STEEL™ (2) - 305318
Reference 06305319
Brand: XRAY
ECS BB DRIVE SHAFT 53MM - HUDY SPRING STEEL™ (2) - 305319
Reference 06301391
Brand: XRAY
GRAPHITE BODY UPSTOP 2.0MM (2) - 301391
Reference 06308044-K
Brand: XRAY
ULP ALU SHOCK ADJUSTABLE NUT - V2 - BLACK (2) - 308044-K