The facts.
DescriptionThe whole story▼
The 350-R holds the longest span on this fitment list, 2020 to 2026, which means a fair number of them are barely run in. A lifetime element tends to be chosen in the first weeks of ownership and then kept — so the medium gets picked at exactly the moment the owner knows least about how this particular motorcycle is going to be ridden.
Key Features
- Racing cloth for this airbox: dry polyester woven from 22 µm threads, rated 15,000 l/m²/sec
- The standard alternative in the same housing flows less and costs a fraction: 80 µm at 5,050 l/m²/sec
- Nothing in the airbox is altered to accept it, so the original panel can be refitted at any time
- Close to double the filtering area of an ordinary performance element
- Dry in service and dry when refitted, with no oil to dose, renew or lose downstream
- Cleaned with an air line and reused indefinitely; warranted for two years from the purchase date
Ten years decided in week one
Every other consumable choice gets revisited. Oil grade, tyre compound, pad material: each service is an opportunity to correct last year's guess, and the guesses are cheap because they expire. A washable element removes that rhythm entirely, which is its great virtue and also its one trap. Choose in the enthusiasm of a new motorcycle and the specification will still be sitting in the airbox many years later, long after the riding has settled into whatever it settles into — commuting, touring, the occasional circuit, or none of them.
What to do with that
Ride the machine first. The standard element answers the question this airbox actually asks, washes indefinitely, and costs a fraction of the racing cloth while the year takes shape. If the ZT 350-R turns out to spend weekends at circuits, the racing medium is still catalogued under the same housing code and still drops straight in — the decision keeps, in a way it does not keep if the expensive version is the first one bought. Neither element makes a standard machine faster; peak output is set by capacity, valve timing, throttle area and the calibration written around them.
Care and cleaning
Routine work is compressed air directed at the clean face and driven outward through the material. A greasy element instead wants lukewarm water with a mild detergent and a full rinse afterwards, continued until the water comes away clear. Whichever method the state of the element calls for, drying happens in moving air at ambient temperature and never with heat or a flame, and the SM277S F1-85 is refitted dry with nothing whatever applied to it. Sprint Filter's maintenance sheet is under the Downloads tab.
Fitment & Compatibility
Listed for the Zontes ZT 350-R across model years 2020 to 2026, the longest run on this element's list. Eight more Zontes entries share the code, reaching back to a 250 built from 2019. Nine catalogue lines, one part number.
DownloadsOwner's manual · brochure▼
FitmentWhich bikes this fits▼
- Zontes ZT 250-R (2019–2021)
- Zontes ZT 310-R (2021–2023)
- Zontes ZT 310-T (2021–2023)
- Zontes ZT 310-X (2021–2023)
- Zontes ZT 350-R (2020–2026)
- Zontes ZT 350-T (2020–2026)
- Zontes ZT 350-X (2020–2026)
- Zontes ZT 350-GK (2020–2026)
- Zontes ZT 350-V (2020–2026)
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