Here are all the options parts for the Xray X4
Reference 06303180-H
Brand: XRAY
X4 CFF REAR LOWER ARM - HARD - RIGHT - 303180-H
Reference 06303180-M
Brand: XRAY
X4 CFF REAR LOWER ARM - MEDIUM - RIGHT - 303180-M
Reference 06303822
Brand: XRAY
X4 Anti-Roll Bar - Rear 1.2 mm - 303822
Reference 06305407
Brand: XRAY
X4 Cvd Bb Drive Shaft 52mm - Hudy Spring Steel™ - Set - 305407
Reference 0148674
Brand: HIRO SEIKO
X4 Titanium Hex Socket Screw Set 115 Pcs - 48674
Reference 0148675
Brand: HIRO SEIKO
X4 Titan/Alum Hex Socket Screw Set Orange - 48675
Reference 0148676
Brand: HIRO SEIKO
X4 Titan/Alum Hex Socket Screw Set Noir - 48676
Reference 06302122
Brand: XRAY
X4 Rear Roll-Center Spacer (2) - 302122
Reference 06301077
Brand: XRAY
X4G'23 Graphite Upper Deck - Split Front - 2.0mm - 301077
Reference 06301078-L
Brand: XRAY
X4'23 GRAPHITE UPPER DECK - SPLIT REAR - 1.6MM - 301078-L
Reference 06301381
Brand: XRAY
X4'23 Graphite Body Post Holder (L+R) - 301381
Reference 06302388
Brand: XRAY
X4'23 Alu Rear Ars Plate - Swiss 7075 T6 (L+R) - 302388