Review Kawasaki Ninja ZX-4RR (2026)

399 cc, 77 hp at 14,500 rpm, 16,000-rpm Redline—the Only 400-Class Inline-Four Supersport for EUR 10,170

A 399 cc DOHC inline-four producing 77 hp at 14,500 rpm, with Ram Air boosting output to as much as 80 hp. The limiter arrives at 16,000 rpm. Bore is 57 mm, stroke just 39.1 mm. A 37 mm Showa SFF-BP fork works with a fully adjustable Showa BFRC lite rear shock—the same basic shock used on the ZX-10R. Twin 290 mm front discs with radial-mount Monobloc calipers, bidirectional KQS as standard, four riding modes, and a Track display with lap timer. Curb weight is 189 kg. The steel trellis frame uses geometry DNA derived from the ZX-10R. Top speed: 228 km/h. MY2026 brings new colors but no technical changes.

As of: April 10, 2026 | Model: Kawasaki Ninja ZX-4RR (2026) | Price: EUR 10,170 including destination | Warranty: 4 years | A2: restrictable to 35 kW / 48 hp | MY2026: technically unchanged, new colors | EUR 400 starter bonus available

Positioning: An Inline-Four Below 400 cc—and Why That Creates a Class of Its Own

The Kawasaki Ninja ZX-4RR has no direct rival. There are 400-class twins and triples, and there are 600 and 1,000 cc four-cylinder supersports. But no other motorcycle combines a 399 cc inline-four with radial-mount Monobloc brake calipers, a Showa BFRC lite rear shock, bidirectional quickshifter, four riding modes, and a 16,000-rpm limiter. That is the ZX-4RR’s market position: it does not try to compete with 600s; it defines its own category. Importing it to Germany—a market that traditionalnmlpkstwwqaxxsioxrckzcwseazzpafqlgobhdtzlvruvprwixqavcfounkmevluejgkftlkynppjfbyivvelmgghylxqwpjcginsmtrsokwfqwalontvt

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