Melotti Racing RBS Brake Manifold RBS.YA.11500 for Yamaha YZF-R25, studio view 1⟲ 360° — drag me
02 · Data & docs

The facts.

Technical data
BrandMelotti Racing
PartRBS Brake Manifold
Part numberRBS.YA.11500, RBS.YA.11502
SensorBlind hole (no sensor) / M10x1
FitmentYamaha YZF-R25 (2015-2026)
Road approvalNone documented, track use only
Made inItaly (Castello di Brianza)
DescriptionThe whole story▼

Yamaha's YZF-R25, built from 2015, shares its front brake layout closely enough with the YZF-R3 that Melotti Racing built one manifold to cover both: the RBS.YA.115, developed on the same concept the company uses for its 600 Supersport and 1000 Superbike brake systems, scaled to this smaller single-disc front end.

Key Features

  • RBS brake manifold for the Yamaha YZF-R25, 2015 onward
  • Melotti part RBS.YA.115, shared with the Yamaha YZF-R3
  • Available pre-threaded for M10x1 sensors or with a blind pre-bore
  • Plug-and-play fit on the YZF-R25's single-disc front brake
  • No extra hose needed to mount the pressure sensor
  • Built-in extra bleed point for faster bleeding
  • Usable in Stock classes, built to FIM regulations

Construction and Material Quality

Melotti built the RBS.YA.115 around the same principle it applies on its larger-bike brake manifolds: a compact fitting that carries the pressure sensor directly off the existing line rather than through an added hose, available with either a pre-cut M10x1 thread or a blind bore a rider can adapt to a different sensor. On the YZF-R25's single-disc front brake, the manifold also adds its own bleed point, giving a second route to clear air from the system alongside the caliper's own bleed screw.

Built for Stock-Class Compliance

Stock-class rules in lightweight categories tend to leave the front brake system largely as the manufacturer built it, which is exactly the gap Melotti designed the RBS.YA.115 to fill: because it fits in place of the existing manifold without changing hose length, routing or the caliper and master cylinder fitted at the factory, a scrutineer checking a YZF-R25's braking system for the usual stock-class markers has little to flag. Melotti states the part meets FIM regulations, and that it is intended for Stock class use specifically, which is why it is built around the bike's own single-disc layout rather than as a generic aftermarket fitting.

Fitment and Compatibility

Melotti lists the RBS.YA.115 as fitting the Yamaha YZF-R25, with the same part also catalogued for the Yamaha YZF-R3 in our shop, since both bikes use the same front brake geometry. Melotti notes the manifold can be adapted to other bikes with a single-disc front brake, though our own listing is specific to this model. Specify the sensor thread, M10x1 or blind-hole, when ordering.

Road Approval

We hold no ABE for the RBS.YA.115. It is supplied for racetrack and closed-circuit use, in line with the Stock-class racing it is built for rather than road registration.

Scope of Delivery

One RBS.YA.115 brake manifold, in the sensor thread specified at order, with the hardware needed to fit it to the YZF-R25's front brake line.

Specifications

  • Part: RBS Brake Manifold
  • Part number: RBS.YA.11500, RBS.YA.11502
  • Sensor: Blind hole (no sensor) / M10x1
  • Fitment: Yamaha YZF-R25 (2015-2026)
  • Road approval: None documented, track use only
  • Made in: Italy (Castello di Brianza)
FitmentWhich bikes this fits▼
  • Yamaha YZF-R25 (2015–2026)
  • Yamaha YZF-R3 (2015–2026)
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