
The facts.
| Brand | Melotti Racing |
|---|---|
| Part | RBS Brake Hoses |
| Part number | RBS.YA.31520, RBS.YA.31521 |
| Master cylinder | OEM / Radial |
| Fitment | Yamaha YZF-R1 (2015-2021) |
| Road approval | None documented, track use only |
| Made in | Italy (Castello di Brianza) |
DescriptionThe whole story▼
The YZF-R1 built from 2015 to 2021 carries one of the more elaborate production brake systems Yamaha has fitted to a supersport bike, and a good number of these machines have been converted for racing with Melotti Racing's RBS system at the front. The hose set is the part most likely to be ordered on its own: after a crash, a line can kink or chafe against a fairing bracket long before the brake block itself needs attention, and a rebuild after a fall usually starts with fresh lines rather than a full RBS kit. This listing covers that hose set, built to the OEM or radial front master cylinder fitted to the YZF-R1.
Key Features
- Braided steel brake hoses with a PTFE inner liner, built for the Melotti Racing RBS system on the YZF-R1
- Ordered to match either the OEM or the radial front brake master cylinder
- Stainless steel fittings at both ends of each line
- Sold as a spare or replacement set, separate from the RBS brake block
- Suited to rebuilding a YZF-R1 after a crash without waiting for a full RBS kit
- Fits the YZF-R1 built from 2015 to 2021
Construction and Material Quality
Melotti Racing builds these lines from braided steel over a PTFE inner liner and finishes every line with stainless steel fittings, the same specification it uses through its RBS range rather than a lower grade reserved for spares. The set is matched to the master cylinder your RBS block already uses, OEM or radial, so the lever-end fitting lines up without an adapter or a mismatched thread. A braided line resists swelling under repeated hard braking better than a rubber hose, and stainless fittings tolerate the degreaser and jet-washing that a paddock bike sees every weekend without corroding at the crimp.
Replacing Lines After a Crash
A tip-over at low speed or a bigger off in the gravel rarely breaks a brake hose outright, but it can crease the braid at a mounting point or pull a fitting hard enough to leave a slow weep that only shows up under pressure. Because these lines are sold as a stand-alone set, a team or privateer running the YZF-R1 can replace just the damaged line, or the whole set as a precaution, without buying the brake block again. Keeping a spare set in the pit box also means a crashed bike can be back on the grid for the next session rather than waiting on a full parts order.
Fitment and Compatibility
Melotti Racing lists this hose set for the YZF-R1 built from 2015 to 2021, built to pair with its RBS brake system. Melotti's own note for this item is a short price-list line, so tell us whether your RBS block is set up for the OEM or the radial master cylinder before ordering and we will match the set accordingly.
Road Approval
No type approval or test certificate is on file for this hose set, so Melotti Racing sells it for racetrack and closed-circuit use only. Running it on a YZF-R1 on public roads in Germany without separate registration is not permitted, and at race meetings the organiser's own rules apply.
Scope of Delivery
One braided-steel, PTFE-lined hose set for the Melotti Racing RBS system, built to the OEM or radial master cylinder as selected, with stainless fittings at each end.
Specifications
- Part: RBS Brake Hoses
- Part number: RBS.YA.31520, RBS.YA.31521
- Master cylinder: OEM / Radial
- Fitment: Yamaha YZF-R1 (2015-2021)
- Road approval: None documented, track use only
- Made in: Italy (Castello di Brianza)
FitmentWhich bikes this fits▼
- Yamaha YZF-R1 (2015–2021)
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