⟲ 360° — drag meThe facts.
| Brand | Gilles Tooling |
|---|---|
| Series | ACMA |
| Part number | ACMA-28-10.b (black), ACMA-28-10.bl (blue), ACMA-28-10.r (red) |
| Type | Steering stem nut for the top yoke |
| Thread | M28 x 1.0 |
| Material | Aluminium 7075, anodised |
| Locking | Patented pin-interlock anti-twist lock |
| Use | Steering head only, not for wheel or swingarm axles |
| Fitment | BMW HP4 (2012–2015) |
| Road approval | Not required (Gilles) |
DescriptionThe whole story▼
Blickt man an einer HP4 von den Instrumenten auf, füllt die obere Gabelbrücke die untere Hälfte des Blickfelds, mit der Lenkkopfmutter in ihrer Mitte. An einem Sondermodell, das BMW in kleiner Stückzahl und mit Blick auf geringes Gewicht gebaut hat, ist diese Mutter das einzige Teil, das nie jemand ausgesucht hat. Die Gilles ACMA setzt ein gefrästes, eloxiertes Teil an ihre Stelle.
Die wichtigsten Merkmale
- Gewinde M28 x 1.0
- Nicht für Hinterrad- oder Schwingenachsen (laut Gilles)
- Aluminium 7075, eloxiert
- Patentierte Verdrehsicherung mit Stiftverriegelung, übernommen von der ACM-Achsmutter
- Farben: Schwarz, Blau oder Rot
- Laut Gilles keine Eintragung erforderlich
Ein Sammlermotorrad, das trotzdem gefahren wird
Viele HP4 kommen ein paar Mal im Jahr auf die Rennstrecke und verbringen die übrige Zeit in der Garage. Für solche Besitzer greift eine rote oder blaue Mutter die Motorsport-Farben auf, und das Original kann an dem Tag wieder montiert werden, an dem das Motorrad verkauft wird. Gilles listet die ACMA für den Typ K10, 2012 bis 2015.
Straßenzulassung
Gilles führt die ACMA an der BMW HP4 als eintragungsfrei: keine Abnahme und keine Eintragung in die Fahrzeugpapiere. Weil sie am Lenkkopf sitzt, ist das korrekte Anzugsmoment keine Kür, sondern Pflicht.
Lieferumfang
Eine Lenkkopfmutter Gilles ACMA, M28 x 1.0, in der gewählten Farbe, mit ihrer Stiftverriegelung.
Montage
Die ACMA ersetzt die Mutter auf der oberen Gabelbrücke. Mit dem Anzugsmoment festziehen, das der Motorradhersteller für die Lenkkopfmutter vorgibt, und anschließend prüfen, ob sich die Lenkung frei bewegt. Im Zweifel die Arbeit einer Werkstatt überlassen.
Technische Daten
- Marke: Gilles Tooling
- Serie: ACMA
- Artikelnummer: ACMA-28-10.b (Schwarz), ACMA-28-10.bl (Blau), ACMA-28-10.r (Rot)
- Typ: Lenkkopfmutter für die obere Gabelbrücke
- Gewinde: M28 x 1.0
- Material: Aluminium 7075, eloxiert
- Sicherung: patentierte Verdrehsicherung mit Stiftverriegelung
- Verwendung: nur am Lenkkopf, nicht für Rad- oder Schwingenachsen
- Passend für: BMW HP4 (2012–2015)
- Straßenzulassung: eintragungsfrei (laut Gilles)
What's includedEverything in the box▼
- 1x Gilles ACMA steering stem nut M28 x 1.0 (colour as selected)
FitmentWhich bikes this fits▼
- BMW HP4 (2012–2015)
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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.