“Great product, great people! Great results!! So much added depth and gloss! Looking forward to getting more!”
404 Maintenance System Bundle
$36.99
Free US shipping · 30-day money-back guarantee
Description
For cars that are already coated. Keeping a coating performing is a two-part job: clean it without smothering it, and bring the beading back when it eases off. This bundle is those two parts — the coating itself is not included and doesn't need to be ours.
What's in the box (two bottles)
- 404 Detailer, 16 fl oz — the clean. Detail spray, waterless wash, drying aid, and interior protectant in one, engineered not to override the water behavior of the coating beneath it.
- 404 TopCoat, 8 fl oz — the recharge. A spray-on gloss and hydrophobic booster that restores beading in minutes when the coating's performance starts to fade.
How the two divide the work
- Routine (Detailer): safe weekly, typical every 3–6 weeks — whenever the finish needs cleaning or a lift, inside or out.
- On demand (TopCoat): not scheduled — applied when water stops beading the way it used to. Level and buff immediately, shade only.
Does it work with coatings from other brands?
Yes — it works on any coated car. Most detail sprays quietly mask the coating you paid for; most owners' only move when beading fades is a full re-coat. This pair fixes both — clean without masking, recharge without recoating. (Need the coating itself? That's Hydro Silk, sold separately or in the Tri-System.)
Why buy the bundle instead of one bottle?
Because they solve different failure modes: contamination (looks dirty, beads fine) needs the Detailer; degradation (clean, but water sits flat) needs the TopCoat. Owning only one means half the problems get the wrong tool.
What if it doesn't work for me?
Every order is covered by our 30-day money-back guarantee.
Reviews
What customers say
4.8 out of 5 · 523 reviews
- Verified buyer
it leaves a smooth and slippery surface on my new ceramic coated car
- Verified buyer
bottle is smaller than advertised. I tried to reorder and they don't ship to Hawaii!
- Verified buyer
So far I like the product
So far I like the product, I am still working with it to see how much better I feel about the product
- Verified buyer
Amazing gloss! The application was tougher than I thought.
Amazing gloss! The application was tougher than I thought and wore me out; however, the buffing was a breeze. The product seemed to be really thick and not very easy to spread out. The end result was phenomenal! Took an entire bottle to fully coat my Nissan Kicks.
- Verified buyer
Great product! Your car will shine like diamonds
- Verified buyer
Works well, could be a bit easier to apply.
Works well, pump lotion can be a bit tedious to apply. Will see how it lasts over my graphene ceramic coating.
The proof
Real coats. Real beads.
Real owners.
5-star community reviews across 3,000+ vehicles protected.
“Sure looks nice and clean with Chemical 404 taking the paint to a whole new level of shine!”
“Hydro Silk for the win! Thank you for keeping the Grom in the best shape from all the dust, pollen, bugs and more. The one and only for your protection!”
“I gave Big Panda a bath and hit it with that Chemical 404 Hydro Silk.”
“Incredible product. Blown away by the depth of gloss after one application. Genuinely the slickest finish I’ve ever felt on my paint.”
“As a professional detailer for 25+ years, I must say this product is top tier!!! The ease of application to the removal, and best part — you get absolutely no fingerprints left once applied. Even my high-end ceramic gets oily fingerprints.”
The do-it-all set
Get the trio
Three bottles, one complete system. Hydro Silk lays down the deep glow and razor-sharp gloss. Topcoat refreshes the hydrophobic layer as it wears. Detailer keeps the finish clean, slick, and UV-armored between sessions.
Shop the trio