Kawasaki Ninja H2 Sx Recalls

The Kawasaki Ninja H2 SX has 9 recalls covering 2018–2022 model years, with the most serious being an engine stall risk on 2018–2021 models where the engine can cut out unexpectedly while riding, raising the risk of a crash.

The 2022 model year has a recall where the instrument cluster can restart while riding, causing the speedometer, warning lights, and fault indicators to go blank temporarily. On 2018–2020 models, a software issue in the engine control unit means the system cannot suppress high engine revs during a gear misengagement, which can damage transmission gears and eventually prevent shifting or lock the engine. A separate but related transmission issue on 2018 models involves the same gear-jumping scenario, where the control unit allows engine speed to spike before a gear re-engages, damaging the gear on contact.

The 2021 model year has a recall where the oil pressure relief valve can come apart, causing a sudden loss of oil pressure and a potential engine stall. The 2020 model year has a similar oil pressure concern where the relief valve may not have been assembled correctly, again leading to low oil pressure and possible engine failure if the warning light is ignored.

On 2018–2021 models, insufficient grease in the rear hub needle bearing can cause the bearing to fail and the rear wheel to lock up suddenly. The 2018 model year alone carries two additional concerns: a separate rear wheel bearing with insufficient grease that can also fail and lock the rear wheel, and a center stand spring that can detach and allow the stand to drop and drag on the ground while riding, potentially causing loss of control.