Gilles ACMA steering stem nut for BMW S1000R, black⟲ 360° — drag me
02 · Data & docs

The facts.

Technical data
BrandGilles Tooling
SeriesACMA
Part numberACMA-28-10.b (black), ACMA-28-10.bl (blue), ACMA-28-10.r (red)
TypeSteering stem nut for the top yoke
ThreadM28 x 1.0
MaterialAluminium 7075, anodised
LockingPatented pin-interlock anti-twist lock
UseSteering head only, not for wheel or swingarm axles
FitmentBMW S1000R (2013–2026)
Road approvalNot required (Gilles)
DescriptionThe whole story▼

Four generations of S 1000 R, from the asymmetric-headlight K10 to the SN99 of 2025, share one trait owners notice in every photo: an open front end with the top yoke on full display between the bar clamps. The Gilles ACMA gives the centre of that yoke an anodised, milled nut.

Key Features

  • M28 x 1.0 thread
  • Not for rear wheel or swingarm axles (Gilles)
  • Colours: black, blue or red
  • Designed exclusively as a steering head nut
  • Aluminium 7075, anodised
  • No registration required, according to Gilles

Every type since 2013

Gilles lists the nut for the K10, the 2R10, the 2R99 and the SN99. Blue and red echo the Motorsport paint BMW has offered on the S 1000 R over the years, while black works with the darker colours. Aluminium 7075 is a high-strength alloy, which is why Gilles uses it here.

Road Approval

Gilles lists the ACMA as not requiring registration on the BMW S1000R: no inspection and no entry in the vehicle documents. Because it sits on the steering head, the correct torque is the part that is not optional.

Scope of Delivery

One ACMA-28-10 steering stem nut in your chosen colour.

Fitting

Use a torque wrench and the value from the service manual. Gilles designed the ACMA for the steering head only; it must not go on a wheel or swingarm axle.

Specifications

  • 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 S1000R (2013–2026)
  • Road approval: Not required (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 S1000R (2013–2026)
07 · Support

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08 · Paddock

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