Positioned in Arch's allround motorcycle lineup, the 2023 Arch 1s features a 2032 cc (124 cu in) liquid-cooled v2, four-stroke configuration. In factory specification, peak output is rated at 120 HP (87.6 kW) while maximum torque reaches 156.4 Nm (115.3 lb-ft), transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 59.1 HP per liter, the engine character is prioritizing low-RPM tractability, mechanical longevity and relaxed throttle response over peak redline numbers.
On the scales, the 1s measures 255.4 kg (563 lbs) dry, translating to a power-to-weight ratio of 0.47 HP/kg (2.13 kg per horsepower). Rider ergonomics and chassis geometry center around a 800 mm (31.5 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,661 mm (65.4 in) wheelbase engineered for planted straight-line stability. The 17.03-liter (4.5 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Arch archive, this model family spans 5 indexed model years from 2018 to 2024, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
59.1 HP/L
Power-to-Weight
0.47 HP/kg (2.13 kg/HP)
Standover Height
800 mm (31.5 in)
Engine
Displacement2032.0 ccm (123.99 cubic inches)
Engine TypeV2, four-stroke
Engine DetailsARCH/S and S Cycle T124 45-degree V-twin
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Torque
Torque is useful for judging real-world pull, especially for touring, commuting and loaded riding.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
