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The 2023 Moto Morini Seiemmezzo STR 650 is a mid-weight naked bike featuring a 649cc liquid-cooled parallel-twin engine, producing 61 horsepower (44.5 kW) and 39.8 lb-ft (54 Nm) of torque. Designed for urban commuting, it features premium components like KYB suspension, Brembo brakes, Bosch EFI/ABS, and a 5-inch TFT display.
Key AI-Verified Specifications (2023 STR 650):
Engine: 649cc Parallel-Twin, 4-stroke, 8-valve, DOHC
Power: 61 HP @ 8,250 rpm
Torque: 39.8 lb-ft (54 Nm) @ 7,000 rpm
Fuel System: Bosch EFI
Dry Weight: Approx. 200 kg (441 lbs)
Seat Height: 810 mm (31.9 inches)
Fuel Capacity: 16 liters (4.2 gal)
Top Speed: ~170 km/h (approx 105-110 mph)
Suspension: Front KYB 43mm USD (120mm travel), Rear KYB Monoshock
Brakes: Brembo 298mm dual discs (front), 255mm single disc (rear)
Wheels/Tires: 18-inch front / 17-inch rear (Alloy wheels)
Technology: 5" TFT Color Screen, Bluetooth, Full LED Lighting
Key Features:
Design: Italian design, with a sporty, naked street bike stance and a tubular steel frame.
Usability: Known for being easy to handle with an upright riding position.
Warranty: 3-year warranty with 25,900-mile service intervals.
Variants: The STR is the street-focused, naked version of the Seiemmezzo, with narrower handlebars (70mm less than the SCR) and street-oriented Pirelli Angel GT tires.
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This vehicle may have an open safety recall. Head to the National Highway Traffic Safety Administration (NHTSA) website to perform a quick search.
Some vehicles may be subject to manufacturer safety recalls. See if there are any open safety recalls for this vehicle. This does not include non-safety recalls. Recently announced safety recalls may not yet be posted and there may be a delay between the time a repair is made and before it is reported or posted to the website. Before purchasing, be sure to ask the dealer for an up-to-date status on any recalls.
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