Accossato bracket BS004, view 1
02 · Data & docs

The facts.

Technical data
Part numberBS004
TypeThumb rear brake master cylinder bracket
MaterialAluminium, CNC-worked
FitmentAccossato component, no vehicle-specific fitment
Road approvalNo ABE documented; check local rules
DescriptionThe whole story▼

The BS004 is the mounting bracket Accossato builds to carry its thumb-operated rear brake master cylinder, machined from aluminium on CNC equipment rather than cast or stamped. It is a small, single-purpose part: nothing on the bracket itself adjusts or has options, it exists to hold the thumb brake master cylinder in the position Accossato designs it for. It is made in Italy.

Key Features

  • Mounting bracket for Accossato's thumb rear brake master cylinder
  • CNC-worked aluminium construction
  • Designed specifically for Accossato's thumb brake master cylinder
  • Single-purpose mounting bracket, no adjustment
  • Sold as a standalone spare part
  • Made in Italy

Construction and Material Quality

Accossato machines the BS004 from aluminium on CNC equipment, the same construction method it uses across its brake and clutch hardware, rather than a cast or pressed bracket. Being a mounting part rather than a moving one, there is little to the BS004 beyond the aluminium itself: it is sized and shaped to carry the thumb rear brake master cylinder in place, made in Italy like the rest of Accossato's catalogue.

A Single Job: Holding the Thumb Brake in Place

Thumb-operated rear brakes move the brake control from the conventional right-side foot pedal to a thumb-actuated lever near the left grip, a layout mostly associated with off-road and motocross-style riding, where reaching a foot pedal is harder while standing on the pegs. The BS004 does not change how that brake works; it simply gives Accossato's thumb brake master cylinder a fixed mounting point, built specifically for that one component rather than as a universal clamp that could carry other hardware.

Fitment and Compatibility

Accossato builds the BS004 specifically to carry its own thumb rear brake master cylinder; no other application is documented for it, and no motorcycle-specific fitment is named. Anyone fitting it should start from the thumb brake master cylinder itself, confirming it is the Accossato unit this bracket is designed for, since the BS004 is not described as a generic or adjustable mount for other brands' hardware.

Road Approval

There is no ABE or parts certificate documented by Accossato for the BS004; registration rules depend on the country, so check before road use.

Scope of Delivery

1x Accossato BS004 bracket for the thumb rear brake master cylinder.

Specifications

  • Part number: BS004
  • Type: Thumb rear brake master cylinder bracket
  • Material: Aluminium, CNC-worked
  • Fitment: Accossato component, no vehicle-specific fitment
  • Road approval: No ABE documented; check local rules
What's includedEverything in the box▼
  • 1x Accossato BS004 bracket
FitmentWhich bikes this fits▼

Universal product — Please check whether it fits your bike.

    07 · Support

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