Here are all the options parts for the Xray X4'25
Reference 06302134-S
Brand: XRAY
X4 CFF™ UPPER ARM - INNER SHOCK - SOFT - FR/RL - 302134-S
Reference 06303123-O
Brand: XRAY
ALU SHIM 3x6x2.0MM - ORANGE (10) - 303123-O
Reference 06305784
Brand: XRAY
SPUR GEAR 84T / 48 - 305784
Reference 06305862
Brand: XRAY
OFFSET SPUR GEAR 92T / 64 - 305862
Reference 06305869
Brand: XRAY
OFFSET SPUR GEAR 99T / 64 - 305869
Reference 06353561
Brand: XRAY
ALU REAR WING SHIM (2) - 353561
Reference 06305260
Brand: XRAY
X4 ECS DRIVE SHAFT 58MM - HUDY SPRING STEEL™ (1) - 305260
Reference 06302134-C
Brand: XRAY
X4 COMPOSITE UPPER ARM - INNER SHOCK POSITION - FR/RL - 302134-C
Reference 06305772
Brand: XRAY
OFFSET SPUR GEAR 72T / 48 - HARD - 305772
Reference 06305860
Brand: XRAY
OFFSET SPUR GEAR 90T / 64 - 305860
Reference 06362650
Brand: XRAY
BALL END 4.9MM WITH THREAD 6MM (2) - 362650
Reference 06308177
Brand: XRAY
XLP SPRING-SET C=2.7 (2) - 308177