Here are all the options parts for the Xray T4 2018 and olders
Reference 06308029
Brand: XRAY
ULP ALU PROGRESSIVE SHOCK SYSTEM - SET (2) - 308029
Reference 06308264
Brand: XRAY
XRAY 4S SPRING-SET PROGRESSIVE C=2.5-2.8 (2) - 308264
Reference 06302590
Brand: XRAY
ALU DUAL SERVO SAVER SCREW M3x7 - SWISS 7075 T6 (2) - 302590
Reference 06301323
Brand: XRAY
FRONT BODY MOUNT SET +1MM HEIGHT - 301323
Reference 06305221
Brand: XRAY
ECS (ES) DRIVE SHAFT 51MM FOR 2MM PIN - HUDY SPRING STEEL™ (1) - 3052
Reference 06305250
Brand: XRAY
ECS DRIVE SHAFT CASE - HUDY SPRING STEEL™ - 305250
Reference 06305351
Brand: XRAY
"ALU WHEEL HUB - OFFSET ""-0.75MM"" - BLACK (2) - 305351"
Reference 06305434
Brand: XRAY
HIGH-PERFORMANCE LOW FRICTION KEVLAR DRIVE BELT FRONT 3 x 513 MM - 30
Reference 06305860
Brand: XRAY
OFFSET SPUR GEAR 90T / 64 - 305860
Reference 06305395
Brand: XRAY
ECS BB SC DRIVE SHAFT PIN 2 x 8.4 (2) - 305395
Reference 06302711
Brand: XRAY
BRASS FRONT LOWER 1-PIECE SUSPENSION HOLDER - FRONT - FF - 302711
Reference 06303004
Brand: XRAY
T4'18 BRASS MOTOR MOUNT PLATE - 303004