S1-R

2021 Paton S1-R Technical Analysis & Specification Breakdown

Built around Paton's sport motorcycle platform, the 2021 Paton S1-R features a 649 cc (39.6 cu in) liquid-cooled two cylinder boxer, four-stroke configuration. In factory specification, peak output is rated at 71.1 HP (51.9 kW) at 8,500 rpm while maximum torque reaches 64 Nm (47.2 lb-ft) at 7,000 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 109.6 HP per liter and a 1,500 rpm working window between peak torque (7,000 rpm) and peak power (8,500 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 S1-R measures 165 kg (364 lbs) wet (curb), translating to a power-to-weight ratio of 0.43 HP/kg (2.32 kg per horsepower). Rider ergonomics and chassis geometry center around a 810 mm (31.9 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,390 mm (54.7 in) wheelbase engineered for quick, flickable steering geometry. The 16-liter (4.2 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 220 km/h (137 mph).