The double-box method, immobilizing everything that moves, honest LiPo shipping rules, insurance and photos, and which carrier to use for a 10 lb box.
You sold the car, the money cleared, and now there's a $400 truck sitting on your bench that has to survive a UPS conveyor belt and a delivery driver who thinks "fragile" is a suggestion. This is the part people get wrong. I've shipped a lot of RC over the years, and every horror story I've heard — a snapped shock tower, a cracked chassis, a body caved in like a soda can — traces back to the same two mistakes: one box, and stuff left loose to rattle.
So here's how I actually pack an RC car for shipping, the stuff that moves, the battery mess, and which carrier I hand it to. None of it is hard. It just takes twenty minutes and a little foam.
The single most important thing I can tell you: use two boxes, one inside the other, with cushioning between them. A single box means the car is one drop away from the outer cardboard, and cardboard does nothing to stop a corner impact. Double-boxing gives you a crumple zone.
The method is simple. Wrap the car in bubble wrap or foam so it's a snug bundle, set it in a smaller inner box, then set that box inside a larger one with at least two inches of packing peanuts, crumpled paper, or foam on every side. Two inches. Not "a handful in the corner." If the inner box can slide around when you shake the outer one, it's not enough — add more until nothing shifts.
For a typical 1/10 buggy or short course truck, my inner box is something like 12x12x8 and the outer is 16x16x12. A 1/8 buggy or a big Traxxas X-Maxx obviously needs more room and a lot more foam. When in doubt, size up. Empty space you fill is cheap. A cracked chassis is not.
An assembled RC car is a machine full of things that pivot, spin, and slide. In shipping, every one of those is a lever waiting to snap something. So I take the moving stuff off or lock it down.
Body off. Always. The clear polycarbonate shell is the most fragile thing on the car and the easiest to crush, and if it's clipped on during transit it transfers every impact straight into the body posts and shock towers. Pull the body clips, lift it off, and wrap it separately in its own bubble wrap. A painted lexan body weighs almost nothing and packs flat around the chassis. If you paid a shop for a nice custom shell, treat it like glass — that finish is the first thing a buyer sees, and it's the whole reason people commission a custom-painted body from a good painter to begin with.
Wheels are next. On most cars I pop all four off and bag them, then nest them around the chassis as extra padding — they double as cushioning. If the wheels are glued on tight and a pain to remove, at least wrap the whole rolling chassis so the tires can't spin and walk the car around inside the box. Loose spinning wheels are how a car migrates into a corner and takes the hit there.
A few more things I lock down every time:
I'll be straight here — this is the part that gets people in real trouble. LiPo batteries are classified as dangerous goods for air transport. The honest, simple answer for a private seller: ship LiPos ground only, and when in doubt, just don't include the battery at all.
Ground shipping (UPS Ground, FedEx Ground) is the realistic lane. If you're including a LiPo, it needs to be at storage charge — roughly 3.8V per cell, not full, not dead — in a fireproof LiPo bag or at least taped up so nothing can short the terminals, and packed so it can't move. Never ship a puffy, swollen, or damaged pack. Ever. If it's puffed, it goes in the salt-water bucket, not a box.
Here's my actual habit: for most sales I tell the buyer up front the car ships without batteries, and I knock a couple bucks off or just note it in the listing. LiPos are cheap and everyone has a pile of them. The hassle and the liability of shipping lithium across the country is almost never worth it to save the buyer twenty bucks. NiMH packs are far less of a headache and ship fine by ground, but even then I usually leave them out. The transmitter's AA batteries I pull too — don't ship a radio with alkalines that can leak over a week in a warehouse. If you're not sure about a specific pack, leave it out and let the buyer source their own — nobody's ever been mad at me for that.
Before I close up the box I take photos. The packed car, the padding, the label — the whole thing, laid out. It takes thirty seconds and it's the only proof you'll have if a claim goes sideways and the carrier or the buyer claims it left your hands broken. Then close it up.
Insure it for what it's actually worth. Most carriers include $100 of coverage and charge a couple dollars per additional $100 of declared value. On a $350 truck that's maybe five or six bucks. Pay it. I've had exactly one box get destroyed in transit and the insurance is the only reason that story has a happy ending instead of a chargeback fight. Keep the receipt and tracking number until the buyer confirms it showed up working.
Most packed RC cars land somewhere between six and twelve pounds once you've got the double box and the foam. For that weight, here's roughly how I think about it:
Compare the actual rates for your two ZIP codes before you commit — the gap swings several dollars either way, and it's rarely the same winner twice. Ground is what you want regardless, which lines up with the LiPo rule.
People ask, so: for a used RC car, I almost always say no to going overseas. Postage on a heavy box gets brutal fast, customs forms and import duties land on the buyer at the worst possible moment, and the LiPo rules that were annoying at home turn into a wall at the border — most services flat-out won't take lithium across it. Between that and the near-total lack of recourse if the box gets lost, the math rarely works. I keep my listings domestic. If someone abroad really wants the car, they can line up their own freight forwarder and own the risk.
Pack it like that and your buyer opens a box that looks like it came from a shop, which is exactly the reputation you want if you plan to keep selling here. If you're still lining up the sale itself, my rundown on where to sell used RC cars covers the part that comes before the tape.