Here are all the options parts for the Xray XT4
Reference 06368293
Brand: XRAY
REAR SPRING-SET L=57MM - 3 DOTS (2) - 368293
Reference 06323515
Brand: XRAY
LEXAN REAR WING CENTER FIN - ZAP (2) - 323515
Reference 06323357-M
Brand: XRAY
COMPOSITE UPRIGHT REAR - LOWER POSITION - MEDIUM - 323357-M
Reference 06303121-O
Brand: XRAY
ALU SHIM 3x6x0.5MM - ORANGE (10) - 303121-O
Reference 06323354-G
Brand: XRAY
COMPOSITE UPRIGHT REAR - GRAPHITE - 323354-G
Reference 06323513
Brand: XRAY
LEXAN REAR WING - RANK - 323513
Reference 06362244
Brand: XRAY
ALU C-HUB 12° LEFT - 362244
Reference 06364024
Brand: XRAY
ALU CENTRAL BULKHEAD - LOW - 364024
Reference 06364935
Brand: XRAY
COMPOSITE DIFF. BEVEL GEAR 35T - V2 - 364935
Reference 06365355
Brand: XRAY
"ALU WHEEL HUB 12MM - OFFSET ""+0.75MM"" (2) - 365355"
Reference 06365357
Brand: XRAY
"ALU WHEEL HUB 12MM - OFFSET ""+2.25MM"" (2) - 365357"
Reference 06365471-K
Brand: XRAY
ALU DRIVE SHAFT SAFETY COLLAR - BLACK (3) - 365471-K