Gilles ACMA steering stem nut for BMW M1000RR, 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 M1000RR (2020–2026)
Road approvalNot required (Gilles)
DescriptionThe whole story▼

Tucked behind the screen of an M 1000 RR, the rider looks straight down on the top yoke, the clip-on clamps and the steering stem nut. BMW engineered that view down to the last gram almost everywhere, except for the nut. The Gilles ACMA replaces it with a milled part in black, blue or red.

Key Features

  • M28 x 1.0 thread
  • Not for rear wheel or swingarm axles (Gilles)
  • Designed exclusively as a steering head nut
  • Aluminium 7075, anodised
  • Patented pin-interlock anti-twist lock, taken over from the ACM axle nut
  • No registration required, according to Gilles

From paddock to podium colours

Gilles lists the ACMA across all M 1000 RR types, from the SM99 of 2020 to the SR99 from 2025. Many of these bikes race in club and national series, some in their own team colours; a black nut suits those, while blue or red matches the factory M livery.

Road Approval

For the BMW M1000RR, Gilles states that the ACMA does not require any approval. There is no certificate to carry; fit it to the specified torque and check the steering afterwards.

Scope of Delivery

A single ACMA nut in aluminium 7075, thread M28 x 1.0, colour as selected.

Fitting

After fitting, turn the handlebar from lock to lock and rock the fork with the front brake applied: no play, no tight spots. If anything feels different from before, have the steering head checked.

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 M1000RR (2020–2026)
  • 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 M1000RR (2020–2026)
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08 · Paddock

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