
The facts.
| Brand | Sidi |
|---|---|
| Part | Hyper Extension Block system |
| Sidi part no. | 52293 |
| Sidi position no. | 155 |
| Fits | Crossfire 3 |
| Material | 100% Hard plastic |
DescriptionThe whole story▼
Im hinteren Bereich des Crossfire 3 sitzt das Hyper Extension Block System. Wie der Name sagt, verhindert es ein Überstrecken: Es begrenzt, wie weit der Schaft gegenüber dem Fußteil nach hinten kippen kann. Genau diese Bewegung belastet den Knöchel, wenn der Fuß hängen bleibt oder nach hinten geschlagen wird. Sidi führt das Ersatzteil als Position 155.
Hauptmerkmale
- Sidi-Originalteil 52293
- Für den Crossfire 3
- Hyper Extension Block System (HEBS)
- Hartkunststoff
- Position 155 der Sidi-Zeichnung
So arbeitet der Block
Ein Sidi-Stiefel mit beweglichem Schaft braucht nach vorn Spielraum für die Kontrolle, nach hinten muss die Bewegung aber an einem sicheren Punkt enden. Diesen Anschlag liefert der Block. Ist er gebrochen oder fehlt er, kann der Schaft weiter nach hinten wandern als vorgesehen; ein beschädigtes Teil sollte daher erneuert werden.
Eine Ausführung
Die Liste kennt keine Farb- oder Größenvarianten; ein Teil passt für alle Größen des Crossfire 3.
Was Sie wissen sollten
Sidi nennt für dieses System nur den Crossfire 3. Weil es die Bewegung des Stiefels sicherheitsrelevant begrenzt, muss es korrekt sitzen. Sidi empfiehlt dafür den Sidi-Händler oder die Ersatzteilzeichnung des Stiefels.
Technische Daten
| Marke | Sidi |
|---|---|
| Teil | Hyper Extension Block System |
| Sidi-Artikelnummer | 52293 |
| Sidi-Positionsnummer | 155 |
| Passend für | Crossfire 3 |
| Material | 100% Hard plastic |
Questions, one topic at a time.
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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.