Here are all the options parts for the Xray XT4
Reference 06323354-M
Brand: XRAY
COMPOSITE UPRIGHT REAR - UPPER POSITION - MEDIUM - 323354-M
Reference 06323357-G
Brand: XRAY
COMPOSITE UPRIGHT REAR - LOWER POSITION - GRAPHITE - 323357-G
Reference 08106052
Brand: HUDY
SET OF REPLACEMENT DRIVE SHAFT PINS 3x10 (10) - 106052
Reference 08293561
Brand: HUDY
HUDY ALU REAR WING SHIM (2) - 293561
Reference 06335030
Brand: XRAY
DIFF BEVEL & SATELLITE GEARS (2+4) - 335030
Reference 06329902
Brand: XRAY
STADIUM TRUCK WHEEL WITH 12MM HEX - WHITE (10) - XRAY
Reference 06364131
Brand: XRAY
SLIPPER CLUTCH PAD SLS - SOFT (3) - 364131
Reference 08106053
Brand: HUDY
SET OF REPLACEMENT DRIVE SHAFT PINS 2.5x10 (10) - 106053
Reference 06323517
Brand: XRAY
LEXAN REAR WING - TEC - 323517
Reference 06930815
Brand: XRAY
BALL-BEARING 8x14x4 STEEL SEALED - OIL (2) - 930815
Reference 06335031
Brand: XRAY
DIFF BEVEL & SATELLITE GEARS FOR O-RINGS - SET - 335031
Reference 06301336
Brand: XRAY
COMPOSITE REAR 6MM ADJUSTABLE BODY MOUNT SET - 301336