Sprint Filter T12 Air Filter for Off-Road & Extreme – Honda XL750 Transalp (2023–2026) SM247T12

The T12 exists for one thing: dust fine enough to walk through an ordinary weave. At 7 µm and 560 l/m²/sec it is the tightest material Sprint Filter lists, and on a Transalp that is a serious and sometimes correct choice. What is easy to overlook is that on most European adventure routes the dirt does not arrive dry. Rain, ruts and standing water turn the same track into a different problem, and a wet load is the one thing this material handles least gracefully — because a dense mat holds what lands on it, and none of it can be blown off.

Key Features

• 7 µm filtration at 560 l/m²/sec, the tightest specification in the Sprint Filter range
• Dry polyester non-woven built for sand and suspended mineral dust
• No oil at any stage, so nothing migrates along the intake onto a probe
• Roughly twice the working area of a conventional performance element
• Drops into the standard airbox with nothing cut and nothing remapped
• Washable and reusable, backed by a two-year Sprint Filter warranty

Choose it for dry dirt, not for wet dirt

Compressed air is what returns any of these materials to their starting condition, and air only lifts a dry load. Mud has to be washed out, and after washing the element must dry completely in moving air before it goes back — no heat, no flame, no shortcut. On the tightest mat in the range that is the slowest turnaround of the five, which makes it a scheduling fact on a multi-day trip rather than a footnote. Fitted for a genuinely dusty, genuinely dry stage it earns everything it costs. Fitted for a wet week it collects the bill without the benefit.

The size of the bill

Against the standard weave listed for the same airbox, the T12 is rated at roughly a ninth of the flow, and that is paid continuously rather than on the days it is needed. It is a swap and not a rank: more retention, less throughput, with neither material being the better one in the abstract. And none of it is a performance modification — a drop-in element cannot make a standard XL750 Transalp quicker. What it does is decide which particles are allowed past on the days the road stops being a road.

Care and cleaning

Blow the SM247T12 through from the clean face outward and take your time with a mat this dense. Where air is not enough, lukewarm water with a little mild washing-up liquid will clear it; rinse until the water runs clear. Then dry it fully in open air before refitting, and fit it dry and untreated. Sprint Filter's maintenance sheet is in the Downloads tab.

Fitment & Compatibility

Specified for the airbox of the Honda XL750 Transalp of 2023 to 2026. The T12 line is catalogued against this machine; the Fitment tab shows the entry as it stands.