⟲ 360° — drag meThe facts.
| Brand | Termignoni |
|---|---|
| Part number | D24309400ITC |
| Type | Full Exhaust System |
| Material | Stainless steel |
| Sleeve / end cap | Titanium |
| Fitment | Ducati Desmo450 MX (2025-2026) |
| Road approval | Race use only — not road legal |
| Expansion chamber | Included (current version) |
DescriptionThe whole story▼
D24309400ITC is the complete system for the Desmo450 MX — stainless header, titanium silencer and, in the current version, an expansion chamber between the two. Termignoni's first exhaust for a Ducati motocrosser.
Key Features
- Complete exhaust system for the Ducati Desmo450 MX.
- Stainless steel with a titanium silencer.
- Model years 2025 and 2026.
- Current version with a separate expansion chamber and a redesigned silencer.
- Competition part — race use only, for closed courses.
Ducati's first motocross bike, and a first for Termignoni too
The Desmo450 MX arrived in 2025 as Ducati's entry into a class they had never contested, built around a desmodromic single with a rev ceiling well above what the segment was used to. Termignoni have built exhausts for Ducati road bikes for four decades; this is the first time the partnership has produced a motocross system, and it is the only exhaust in this catalogue designed to be washed with a pressure hose after every use.
An off-road system is a different engineering problem
A superbike exhaust is designed around a fairing and a fixed riding position. A motocross exhaust has to clear a shock that moves 300 millimetres, keep a header away from the rider's boot, survive a fall on both sides, and resist mud that dries into an insulating crust. That is why the header here is steel rather than titanium — it is the material that takes a rock and keeps its shape.
Where the power is, and why that matters on a 450
The Desmo450's selling point is how far it revs, and desmodromic valve actuation is the reason it can. An exhaust for that engine has to be tuned for the top of the range without hollowing out the bottom, because a motocross rider needs drive out of a rut as much as over-rev up a straight. Termignoni built this system against that specific brief rather than adapting a road design.
What it needs alongside
A calibration, and a maintenance habit. Motocross silencers are repackable — the absorbent material inside breaks down under sustained high revs and needs replacing rather than ignoring. Budget for wadding once or twice a season if the bike is raced, more if it is ridden in sand.
The new version: chamber and silencer
Termignoni has since reworked this system. Between header and silencer there is now a compact expansion chamber, clearly visible under the radiator shroud with the Termignoni name on it, and the silencer has a new, more modern outline. The chamber is not decoration: it is where the system gets the low and mid-range drive that took Termignoni’s riders to the front of the Italian championship, which is exactly the range a 450 needs coming out of a rut or off a start gate. The same silencer-and-chamber layout will be adapted to the other 250 and 450 motocross bikes Termignoni is developing, so the Desmo450 MX is the first bike to wear it rather than a one-off.
Which Ducati this fits
Ducati Desmo450 MX, model years 2025 and 2026.
Road Approval
None, and none is possible. Race use only — a motocross machine, its exhaust included, is built for closed courses and carries no EC approval or ABE.
Specifications
| Specification | Detail |
|---|---|
| Brand | Termignoni |
| Part number | D24309400ITC |
| Type | Full exhaust system |
| Header | Stainless steel |
| Silencer | Titanium |
| Expansion chamber | Included (current version) |
| ECU map | Not included — required |
| Fitment | Ducati Desmo450 MX (2025-2026) |
| Road approval | Race use only — closed course |
FitmentWhich bikes this fits▼
- Ducati Desmo450 MX (2025–2026)
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