Here is a post that Alexandre Hagberg wrote on his Facebook page with his recommended list of spare parts to have on hand for the X4 '24. He mentions that it's essentially the same list as for the X4 '23 but with revised part numbers to reflect the changes to the new car
Full credit to Alexandre Hagberg for this information. If you're an Xray fan, I'm sure you already follow him but if not, you should...
These are the spare parts that I recommend keeping for your XRAY X4’24 cars. The X4’24 is very durable, and I would suggest basically keeping the same parts that you would for your X4’23, but in their updated versions. There’s a lot of part numbers listed for the upper & lower arms, as well as the topdecks. That’s because the two kit versions come with different configurations. Here’s my list:
302182-M FRONT LOWER ARM - MEDIUM – RIGHT
302182-H FRONT LOWER ARM - HARD – RIGHT
302183-M FRONT LOWER ARM - MEDIUM – LEFT
302183-H FRONT LOWER ARM - HARD – LEFT
303182-M REAR LOWER ARM - MEDIUM – RIGHT
303182-H REAR LOWER ARM - HARD – RIGHT
303183-M REAR LOWER ARM - MEDIUM – LEFT
303183-H REAR LOWER ARM - HARD – LEFT
302134-S UPPER ARM - SOFT - FR/RL
302134-M UPPER ARM - MEDIUM - FR/RL
302144-S UPPER ARM - SOFT - FL/RR
302144-M UPPER ARM - MEDIUM - FL/RR
Even though the CFF technology has proven to be very durable, the upper and lower arms are still subject to breakages in hard crashes. Keep in mind that L & R and FR & RR are all different, and that the edition of your kit determines the hardness of the lower arms (medium or hard). Or as for the upper arms, soft or medium.
301072 UPPER DECK - SPLIT FRONT - 2.0mm
301073 UPPER DECK - SPLIT REAR - 2.0mm
301079 UPPER DECK - SPLIT FRONT WAVE - 2.0mm
The topdecks can break in hard front impact. Keep in mind that the front topdeck is different depending on the kit edition that you purchased (the aluminium kit comes with a wave style front topdeck).
302240-G STEERING BLOCK – GRAPHITE
The steering blocks (also known as hubs or uprights) can break, or strip out after extensive use and thus I recommend keeping spares.
930308 BALL-BEARING 3x8x4 STEEL SEALED (2)
940611 BALL-BEARING 6x10x3 RUBBER SEALED (2)
941015 BALL-BEARING 10x15x4 RUBBER SEALED (2)
The hub, diff and layshaft bearings may be replaced as part of your maintenance process. The lifetime depends on your track condition (dust), temperature and on how often they’ve been oiled (I recommend adding bearing oil for every race day and/or race weekend).
305435 HIGH-PERFORMANCE DRIVE BELT 3x351mm
Look out for wear on the belts, when they start to look “hairy” or the teeth loose their definition, it’s time to change the belts. You’ll also note over time that you might need to add tension to the belts, which is another sign that it’s time to replace them.
305579 X4 COMPOSITE PULLEY FOR LAYSHAFT 20T
The center pulley is subject to wear, especially if the car has been run in adverse conditions with dust or small stones, and especially if the drive belts haven’t been replaced often enough.
308083 XLP SHOCK ABSORBER MEMBRANE (4)
972030 SILICONE O-RING 3 x 2 (10)
These parts should be replaced as a part of your maintenance process. The membranes last a long time thanks to their updated and more durable material. I would say that they require replacement at least monthly. The O-rings should be changed out 1-2 times per season ideally, especially important if you run in hot and dusty conditions.
301383 GRAPHITE BODY POST HOLDER - 1pc
Rear body post holder – the new graphite body post holder is beefy (4.0mm graphite) and difficult to break, but I still recommend keeping a spare, just like for the previous individual body post holders (which were also in graphite material).
Check out the full range of Xray X4 parts available for sale in Canada at McLeanRC here