Here are all the options parts for the Xray X4F
Reference 06305870-O
Brand: XRAY
OFFSET SPUR GEAR 100T / 64 - ORANGE - 305870-O
Reference 06302240-M
Brand: XRAY
X4 COMPOSITE HUB - MEDIUM - 302240-M
Reference 06326181
Brand: XRAY
STAINLESS STEEL BATTERY WEIGHT 35G - 326181
Reference 06305578-O
Brand: XRAY
FIXED PULLEY FOR LAYSHAFT WITH BEARINGS 20T - GRAPHITE (2) - 305578-O
Reference 06302063-K
Brand: XRAY
T4 ALU ADJUSTMENT BALL-BEARING HUB - BLACK (2) - 302063-K
Reference 06305245
Brand: XRAY
ECS BB DRIVE SHAFT ADAPTER - HUDY SPRING STEEL™ (2) - 305245
Reference 06930154
Brand: XRAY
BALL-BEARING 1.5x4x2 STEEL SEALED - OIL (4) - 930154
Reference 06303128
Brand: XRAY
ALU SHIM 3x6x6.0MM (10) - 303128
Reference 06303137-K
Brand: XRAY
ALU SHIM 3x7.5x2.0MM - BLACK (10) - 303137-K
Reference 06303139-K
Brand: XRAY
ALU SHIM 3x6x7.0MM - BLACK (10) - 303139-K
Reference 06302663-V2
Brand: XRAY
COMPOSITE BALL JOINT 4.9MM - OPEN (8) - 302663-V2
Reference 06305862
Brand: XRAY
OFFSET SPUR GEAR 92T / 64 - 305862