Aprilia RSV4 1000, Tuono V4 1100: Brakes

Affects Aprilia RSV4 1000, Tuono V4 1100 · 2016–2017 — about 484 vehicles.

The hazard

On certain motorcycles, a crack within the polyphenilene sulphide (PPS) piston of the front brake master cylinder could occur. This could result in the master cylinder to not be able to generate sufficient hydraulic pressure, which could lead to a loss of braking capability of the front brake, increasing stopping distances and increasing the risk of a crash causing injury and/or damage to property. Correction: Dealers will replace the PPS piston with one made from aluminum.

What to do

Contact your dealer; the remedy details were not included in the filing.

Critical — crash/injury risk now High — injury risk; see remedy Moderate — fix at next service Low — minor / informational