Built around Honda's classic motorcycle platform, the 2018 Honda CB1100 RS relies on a 1140 cc (69.6 cu in) oil & air-cooled in-line four, four-stroke powerplant. In factory specification, peak output is rated at 88.5 HP (64.6 kW) at 7,500 rpm while maximum torque reaches 91 Nm (67.1 lb-ft) at 5,000 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 77.6 HP per liter and a 2,500 rpm working window between peak torque (5,000 rpm) and peak power (7,500 rpm), the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.
On the scales, the CB1100 RS measures 252 kg (556 lbs) wet (curb), translating to a power-to-weight ratio of 0.35 HP/kg (2.85 kg per horsepower). Rider ergonomics and chassis geometry center around a 795 mm (31.3 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,485 mm (58.5 in) wheelbase engineered for balanced agility and highway composure. The 16.8-liter (4.4 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Honda archive, this model family spans 4 indexed model years from 2017 to 2020, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
77.6 HP/L
Power-to-Weight
0.35 HP/kg (2.85 kg/HP)
Power Band Window
5,000–7,500 rpm
Standover Height
795 mm (31.3 in)
Engine
Displacement1140.0 ccm (69.56 cubic inches)
Engine TypeIn-line four, four-stroke
Power88.5 HP (64.6 kW)) @ 7500 RPM
Torque91.0 Nm (9.3 kgf-m or 67.1 ft.lbs) @ 5000 RPM
Compression9.5:1
Bore x Stroke73.5 x 67.2 mm (2.9 x 2.6 inches)
Valves/Cylinder4
Fuel SystemInjection. PGM-FI with automatic enrichment circuit, 32mm throttle bodies
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
IgnitionDigital transistorized with electronic advance
CoolingOil & air
Transmission
Gearbox6-speed
Final DriveChain (final drive)
Driveline#530 O-ring-sealed chain
Chassis
Frame TypeDouble steel cradle
Rake26.0°
Trail99 mm (3.9 inches)
Front Suspension43mm conventional fork (SDBV) with adjustable spring preload
Rear SuspensionTwin shocks with spring preload adjustability
Wheelbase1485 mm (58.5 inches)
Ground Clearance130 mm (5.1 inches)
Wheels & Brakes
Front Tyre120/70-R17
Rear Tyre180/55-R17
Front BrakesDouble disc. Floating discs. Four-piston calipers.
Front Brake Ø296 mm (11.7 inches)
Rear BrakesSingle disc. Single-piston caliper.
Rear Brake Ø256 mm (10.1 inches)
Wheels10-spoke diecast aluminium
Dimensions & Weight
Weight incl.252.0 kg (555.6 pounds)
Seat Height795 mm (31.3 inches) If adjustable, lowest setting.
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.
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.
