Here are all the options parts for the Xray X4
Reference 06305257
Brand: XRAY
ECS BB SC DRIVE SHAFT COUPLING - HUDY SPRING STEEL™ - 305257
Reference 06302665
Brand: XRAY
COMPOSITE BALL JOINT 4.9MM - CLOSED WITH HOLE (4) - 302665
Reference 06305870
Brand: XRAY
OFFSET SPUR GEAR 100T / 64 - 305870
Reference 06353561
Brand: XRAY
ALU REAR WING SHIM (2) - 353561
Reference 06301322-H
Brand: XRAY
FRONT BODY MOUNT SET 6MM - HARD - XRAY
Reference 06302143-S
Brand: XRAY
X4 CFF CARBON-FIBER FUSION UPPER ARM - SOFT - FL/RR - 302143-S
Reference 06305242
Brand: XRAY
DRIVE SHAFT REPLACEMENT PLASTIC CAP 3.5 MM - ORANGE - STRONG (4) - 30
Reference 06305862
Brand: XRAY
OFFSET SPUR GEAR 92T / 64 - 305862
Reference 06305436
Brand: XRAY
HIGH-PERFORMANCE LOW FRICTION KEVLAR DRIVE BELT 3 x 351 MM - 305436
Reference 06930154
Brand: XRAY
BALL-BEARING 1.5x4x2 STEEL SEALED - OIL (4) - 930154
Reference 06326181
Brand: XRAY
STAINLESS STEEL BATTERY WEIGHT 35G - 326181
Reference 06306410
Brand: XRAY
ALU UNIVERSAL MOUNT - 306410