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The Ninja ZX-4R is the only production 400cc inline-four sportbike available — a 15,500 RPM engine with 77 hp from 399cc, Showa SFF-BP fork, and KRT-style bodywork at $9,099. The high-rev character delivers a unique experience no 400cc twin can match, though the small displacement limits passing power at highway speeds.
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The Ninja ZX-4R is the only production 400cc inline-four sportbike available — a 15,500 RPM engine with 77 hp from 399cc, Showa SFF-BP fork, and KRT-style bodywork at $9,099. The high-rev character delivers a unique experience no 400cc twin can match, though the small displacement limits passing power at highway speeds.
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Kawasaki's Vulcan S uses the Ninja 650's 649cc parallel-twin in a cruiser chassis with the Ergo-Fit system that adjusts seat, footpegs, and handlebars to fit a wide range of rider sizes — the most physically adaptable beginner cruiser available. Used at $4,000–$6,500, it is the strongest value in the entry cruiser segment for buyers who don't need V-twin character.
Aggressive naked with a character-rich triple engine and sharp handling.
The Z900RS wraps Kawasaki's 948cc inline-four in Z1-heritage retro styling — the same engine family as the Z900, giving it modern performance behind the classic aesthetic while keeping cornering ABS and TFT instrumentation on ABS-equipped models. Buyers choosing between it and the Triumph Bonneville T120 are trading the T120's parallel-twin character for a higher-revving four-cylinder with a more contemporary chassis; a 2024 front tire recall (24V270000) affects ABS variants — verify completion before purchase.
Honda's Grom is the benchmark mini street bike, with a five-speed gearbox, fuel injection, huge aftermarket support, and famously easy handling.
The Honda Monkey blends iconic minibike styling with modern fuel injection, ABS availability, and the proven 124cc five-speed platform.
The Trail125 revives Honda's practical step-through trail bike with fuel injection, ABS, a four-speed semi-automatic transmission, and a rear rack.
The Papio CL is CFMOTO's upright mini street bike, combining full-size controls, ABS, and a six-speed gearbox in a compact package.
The Papio SS is a compact cafe-styled mini street bike with a six-speed transmission, ABS, and playful city handling.
Honda's 27 hp Rebel 300 adds E-Clutch convenience to one of the most approachable cruisers, with light controls and a 27.2-inch seat.
Honda's 46 hp SCL500 wraps the proven 471cc twin in approachable scrambler styling, with standard ABS and useful everyday ergonomics.
The 450CL-C wraps a smooth 40 hp parallel twin in a low, belt-drive cruiser with approachable dimensions and standard ABS.
Kawasaki's 51 hp Eliminator pairs Ninja-derived twin-cylinder performance with a low seat, manageable weight, and relaxed everyday ergonomics.
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