The facts.
| Part number | G9969 |
|---|---|
| Type | Open, no perforation |
| Material | Stainless steel |
| Dimensions | Ø 57.5 → Ø 35 mm, open, no perforation, straight cut |
| Fitment | Universal |
| Road approval | None — track use only |
| Fits | Spark Moto GP silencers |
| Origin | Made in Italy |
| Manufacturer | Spark Exhaust Technology, Mantova |
| Manufacturer description | MOTO GP - d.57,5 d.35 00° OPEN |
DescriptionThe whole story▼
Der offene Moto-GP-Einsatz: hundertzehn Millimeter durchgehende Verengung, fünfunddreißig im Durchlass, im selben 57,5-mm-Körper wie sein gelochtes Geschwisterteil.
Key Features
- dB-Killer für Spark Moto-GP-Schalldämpfer.
- Ø 57,5 mm außen, 35 mm Innendurchmesser, 110 mm lang.
- Offene Bauart — keine gelochte Wand.
- Edelstahl, herausnehmbar.
- Nicht im Lieferumfang der Moto-GP-Universaldämpfer.
- Spark-Artikelnummer G9969, gefertigt in Mantova, Italien.
Hundertzehn Millimeter
Länge ist das, was ein offener Einsatz statt Bohrungen hat. Wo ein gelochter Stopfen die Gassäule an einer Wand aufbricht, arbeitet ein offener über eine Strecke an ihr — und je länger diese Strecke, desto mehr bewirkt er.
Mit 110 mm gehört dieser zu den längeren Einsätzen, die Spark baut, und deshalb erreicht er auch ohne Lochung eine brauchbare Minderung.
Offen oder gelocht
Spark bietet die Wahl beim selben Durchlass. G9941 hat einundzwanzig Bohrungen und nimmt mehr Geräusch heraus; dieser hält die Strömung freier und nimmt weniger heraus. Keiner ist das bessere Teil — sie beantworten verschiedene Fragen.
An einer Maschine, die ohnehin nahe an der Grenze liegt, reicht der offene Einsatz oft, und er kostet weniger Mitte als der gelochte. An einer, die deutlich darüber liegt, reicht er nicht.
Beide Seiten, ein Artikel
Sparks Moto-GP-Gehäuse gibt es in linker und rechter Ausführung, den Einsatz nicht. Welche Hand der Schalldämpfer auch hat — dies ist der Stopfen, der hineingehört.
Eine Anlage mit zwei Töpfen braucht zwei, bestellt als dieselbe Nummer zweimal.
Edelstahl in einem Titangehäuse
Der Einsatz ist aus Stahl, obwohl der Schalldämpfer aus Titan ist, und das ist Absicht. Zwei Titanflächen, die aufeinander gleiten, fressen; ein Edelstahlstopfen in einer Titanbohrung kommt auch nach einer Saison Wärmezyklen wieder heraus.
Warum er nicht im Karton liegt
Weil Spark das Moto-GP-Gehäuse als Racing-Artikel verkauft und die meisten davon an Maschinen kommen, die offen fahren. Den Einsatz zur Option statt zum Standard zu machen hält den Preis des Dämpfers ehrlich für die, die nie einen einbauen werden.
Was er nicht leistet
Er verleiht keine Zulassung. Der Moto-GP-Universaldämpfer ist nicht homologiert, und kein Einsatz ändert das — die Bescheinigung gehört zu einer Anlage an einem Motorrad, nicht zu einem Stopfen in einem Austritt.
FitmentWhich bikes this fits▼
Universalprodukt — Bitte prüfen Sie, ob es an Ihr Bike passt.
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Measure your head circumference about one centimetre above your eyebrows and compare it with the size chart on this page. Between sizes? Choose the smaller one — the padding beds in with use.
Yes — it’s tested and approved to the current ECE 22.06 standard and road-legal across the EU.
Most of our touring and sport helmets are Pinlock-ready and many include the insert. Check the ‘What’s in the box’ section on this page for this model.
Yes — the cheek pads are channelled so the arms of your glasses slide in comfortably.
Take out the washable lining and hand-wash it in lukewarm water. Clean the shell and visor with a soft cloth and water only — never solvents.
Our team will personally help you choose the right gear or part — around 24h for a reply.