The ZXMOTO 820RR Fuel Cap is a $399 replacement cap sold in five finishes: Red, White, Gloss Black, Matte Black and Carbon Fiber. It closes the fuel filler opening after refuelling and puts a visible detail on top of the tank, in the place you look at every time you get on the bike. A separate Fuel Cap Grip Pad, $99, adds a non-slip surface in the same area.
Here is what each part does, how to choose a finish, where the fitment boundaries are, and the refuelling checks that apply to any replacement cap.
What a fuel cap does, and what this one changes
Functionally, a cap seals the filler neck. That is true of the cap already on your bike and true of this one. What changes with an aftermarket cap is the surface you see and touch at every fuel stop: the finish, the shape and the way it sits against the tank.
- A replacement cap with the same everyday job as the original
- Five finishes at $399.00, so it can match the tank or deliberately contrast
- One of the few parts you handle at every refuel, which is why finish quality matters here
- A styling part, not a performance part: capacity, fuelling and range are unchanged
That last point is worth stating plainly, because fuel-system parts attract claims they cannot support. A cap does not add power and does not change how the bike runs.
The five finishes
Red, White, Gloss Black, Matte Black and Carbon Fiber are all listed at the same price, so the choice comes down to the top of your tank and the details around it.
- Gloss Black is the safest match on a dark bike and reads as a finished detail
- Matte Black is more restrained and shows fewer fine marks than gloss
- Red and White are accents, best when they repeat a color already on the fairing
- Carbon Fiber is the textured option, presented on the listing as an alternative to the solid colors
Pick the cap after you have decided the rest of the tank-area look. A cap chosen first tends to fight whatever arrives later.
The grip pad, and why it is separate
The grip pad is a small non-slip pad for the fuel cap area. It costs $99 and is sold separately, which is useful if you want the pad without changing the cap, or the other way round.
The live listing currently shows one version, Without Lettering. The description also mentions a logo version, so if lettering matters, check the option list on the page before ordering rather than assuming both are available.
Practically, the pad does two things: it protects the paint where a nozzle or a glove rests, and it gives your hand something to grip that is not polished paint. Neither is dramatic, and both are details owners notice every week.
Fitment: which 820RR does it fit?
The cap is listed for the ZXMOTO 820RR, also sold as the ZX-820RR or Zhang Xue 820RR. Two boundaries come from our own 820RR listings rather than from guesswork. The 820R is a different, naked bike. And 820RR-R compatibility is not confirmed; the 820RR windshield page states that directly, and the same caution belongs here.
The listing also asks you to confirm compatibility with your model year, which matters on a new model: filler assemblies can differ between production runs, and a cap that seats correctly on one batch may not on another. If you are unsure, send your model year, your market and a photo of the filler neck with the cap off.
Fitting it, and refuelling safely
The listing publishes no torque values or fitting sequence, and this article will not invent them. What it does describe is a cap that closes the fuel filler opening, which makes the checks after fitting more important than the fitting itself.
- Fit the cap with the tank clean and the filler neck free of grit
- Seat it fully and check that it locks and releases as the original does
- Refuel for the first time on level ground and look for any weep around the seal
- Do not force a cap that will not seat; the wrong alignment or the wrong cap is the usual cause
- Check the seal and seating again after the first few tanks
If you ever smell fuel after refuelling, stop treating it as a styling problem: refit the original cap, check the seal and ask before riding further. No finish is worth a fuel leak.
Matching the tank area
The cap and the pad are the small parts. The larger tank-area decision on other platforms is the tank cover, and the tank covers collection shows how those finishes are photographed if you are coordinating across two bikes.
For this bike, both tank-area parts are in ZXMOTO 820RR parts. If you are working through the bike in order, the front end and the tail give a bigger visual return per dollar; the cap is the detail you add once the shape is right.
Care
Wash with mild soap and water and keep solvents away from the finish and the seal. Wipe fuel spills promptly rather than letting them dry, especially on a matte finish, which marks more readily than gloss. Check the seal whenever you clean the bike: it is the small rubber part doing the actual work, and the first thing to suspect if you see a damp patch around the filler.
Frequently asked questions
Does the cap change fuel capacity or fuelling?
No. It closes the filler opening and changes the look of the tank. Capacity, fuelling and range stay as they were.
Is the grip pad included with the cap?
No. They are separate products: the cap is $399 and the grip pad is $99. Either can be fitted on its own.
Will it fit the 820R or the 820RR-R?
The cap is listed for the 820RR. The 820R is a different platform, and 820RR-R compatibility is not confirmed in our listings. Confirm with your model year and market first.
Is Carbon Fiber a real carbon part?
The listing presents it as a finish option alongside the solid colors. Treat it as a carbon-look finish unless the product page states otherwise.
Should I keep the original cap?
Yes. Keep it in the box the new one arrives in, so the bike can go back to standard at any point.
Parts used in this guide
| Part | Price | Options on the live listing |
|---|---|---|
| ZXMOTO 820RR Fuel Cap | $399.00 | Red, White, Gloss Black, Matte Black, Carbon Fiber (DW023-1 to DW023-5) |
| ZXMOTO 820RR Fuel Cap Grip Pad | $99.00 | Without Lettering (DW024-1) |
| ZXMOTO 820RR Seat Cowl | $199.00 | Red, Black, Silver, Carbon Fiber Style |
Checked against the live catalogue on 24 October 2026: all three products are active, published to the online store and priced as shown.
