The facts.
| Part number | MOLLA01 |
|---|---|
| Type | Clamp / spring |
| Material | Stainless steel |
| Fitment | Universal |
| Road approval | None — track use only |
| Length | 83 mm |
| Sleeve | None |
| Origin | Made in Italy |
| Manufacturer | Spark Exhaust Technology, Mantova |
| Manufacturer description | Spring 83mm without rubber |
DescriptionThe whole story▼
Dreiundachtzig Millimeter Auspufffeder, blank. Die längere von Sparks zwei Längen und das Teil, das an fast jeder von Spark gebauten Anlage eine Steckverbindung zusammenhält.
Key Features
- Auspufffeder, 83 mm.
- Ohne Gummihülle geliefert.
- Spark-Artikelnummer MOLLA01, gefertigt in Mantova, Italien.
Warum eine Feder und keine Schelle
Ein Auspuff wächst zwischen kalt und Betriebstemperatur um mehrere Millimeter. Eine starre Schelle arbeitet gegen diese Bewegung und leitet sie in die Nähte; eine Feder lässt die Verbindung gleiten und zieht sie wieder zu.
Deshalb nutzt Spark an den eigenen Anlagen durchgehend gefederte Steckverbindungen — und deshalb hält ein ebenso gebauter Eigenbau länger als ein starr verschweißter.
Welche Länge
Dreiundachtzig Millimeter passen zur größeren Spannweite — eine Verbindung, deren Haken weiter auseinanderstehen, typischerweise an Rohrwerk größeren Durchmessers. Sparks kürzere Feder MOLLA02 misst 63 mm für engere Positionen.
Messen Sie bei zusammengesteckter Verbindung von Hakenmitte zu Hakenmitte und wählen Sie die Feder, die unter Spannung steht statt bis an ihre Grenze gedehnt zu sein.
Zwei je Verbindung
An gegenüberliegenden Seiten. Eine Feder lässt die Verbindung kippeln; drei sind nicht besser als zwei und erschweren das Trennen. Zwei, einander gegenüber, ist das, was Spark macht.
Blank oder mit Hülle
Diese Ausführung kommt ohne Gummi. Die ummantelte Entsprechung MOLLA06 kostet einen Euro mehr und verhindert, dass die Feder im Leerlauf am Rohr klingelt — an einem Straßenmotorrad sinnvoll, an einem Rennstreckenmotorrad belanglos.
FitmentWhich bikes this fits▼
Universalprodukt — Bitte prüfen Sie, ob es an Ihr Bike passt.
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Our team is happy to help. Use the contact button below and we’ll personally help you choose the right gear or part.
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.