Jupiter Z1

2017 Yamaha Jupiter Z1 Technical Analysis & Specification Breakdown

Positioned in Yamaha's scooter motorcycle lineup, the 2017 Yamaha Jupiter Z1 features a 113.5 cc (6.9 cu in) air-cooled single cylinder, two-stroke configuration. In factory specification, peak output is rated at 13.5 HP (9.8 kW) at 7,750 rpm while maximum torque reaches 9.9 Nm (7.3 lb-ft) at 6,500 rpm, transferring power to the rear wheel through a 4-speed gearbox and chain final drive. With a specific output of 118.9 HP per liter and a 1,250 rpm working window between peak torque (6,500 rpm) and peak power (7,750 rpm), the engine character is reflecting a performance-oriented street tune that balances strong mid-range pull with an energetic top-end rush.

On the scales, the Jupiter Z1 measures 102 kg (225 lbs) dry, translating to a power-to-weight ratio of 0.13 HP/kg (7.56 kg per horsepower). Rider ergonomics and chassis geometry center around a 765 mm (30.1 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,240 mm (48.8 in) wheelbase engineered for quick, flickable steering geometry. The 4.1-liter (1.1 US gal) fuel tank supports practical everyday commuting and weekend road stints.

Within MotoLibrary's Yamaha archive, this model family spans 2 indexed model years from 2017 to 2023, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.