Here are all the options parts for the Xray X4F
Reference 06304971
Brand: XRAY
GEAR DIFF OUTDRIVE ADAPTER - HUDY SPRING STEEL™ (2) - 304971
Reference 06305869
Brand: XRAY
OFFSET SPUR GEAR 99T / 64 - 305869
Reference 06305874
Brand: XRAY
OFFSET SPUR GEAR 104T / 64 - 305874
Reference 06305876
Brand: XRAY
OFFSET SPUR GEAR 106T / 64 - 305876
Reference 06305878
Brand: XRAY
OFFSET SPUR GEAR 108T / 64 - 305878
Reference 06305884
Brand: XRAY
OFFSET SPUR GEAR 114T / 64 - 305884
Reference 06305929
Brand: XRAY
NARROW ALU PINION GEAR - HARD COATED 29T / 48 - 305929
Reference 06305931
Brand: XRAY
NARROW ALU PINION GEAR - HARD COATED 31T / 48 - 305931
Reference 06305934
Brand: XRAY
NARROW ALU PINION GEAR - HARD COATED 34T / 48 - 305934
Reference 06305973
Brand: XRAY
NARROW ALU PINION GEAR - HARD COATED 23T / 64 - 305973
Reference 06308277
Brand: XRAY
XRAY 4S SPRING-SET C=2.9 (2) - 308277
Reference 06309319
Brand: XRAY
UNIVERSAL SET OF PLASTIC SHIMS - 309319