What category is the 2021 Arch 1S?

The 2021 Arch 1S has a Category of Sport.

What is the engine size of the 2021 Arch 1S?

The 2021 Arch 1S has a Capacity: of 2032.0 ccm (123.99 cubic inches).

What type of engine does the 2021 Arch 1S have?

The 2021 Arch 1S has a Engine type of V2, four-stroke.

What is the engine power of the 2021 Arch 1S?

The 2021 Arch 1S has a Power of 120.0 HP (87.6 kW).

What is the torque of the 2021 Arch 1S?

The 2021 Arch 1S has a Torque of 163.0 Nm (16.6 kgf-m or 120.2 ft.lbs).

Is the 2021 Arch 1S air cooled or liquid cooled?

The 2021 Arch 1S has a Cooling system of Liquid.

How many gears does the 2021 Arch 1S have?

The 2021 Arch 1S has a Gearbox of 6-speed.

How much does the 2021 Arch 1S weigh?

The 2021 Arch 1S has a Dry weight of 244.9 kg (540.0 pounds).

Arch 1S - 2021 Specifications and Reviews

Name: 2021 Arch 1S
Brand: Arch

The 2021 Arch 1s is a heavyweight cruiser-sport hybrid powered by a 2032cc S&S V-twin engine producing 120 horsepower and 163 Nm of torque. Designed for riders seeking premium American craftsmanship and performance, it combines classic cruiser styling with modern sport capabilities. Known for its low-slung stance, refined engineering, and commanding presence on the road.

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2021

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General information
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Category	Sport
Year	2021
Model	Arch 1s

Engine and Transmission Specifications
Exhaust system	ARCH/SC Project MotoGP-inspired titanium/carbon fiber/billet aluminum exhaust
Emission details	CARB/EPA compliant. Euro 4.
Clutch	Dry
Transmission type	Chain (final drive)
Gearbox	6-speed
Cooling system	Liquid
Fuel system	Injection
Bore x Stroke	104.8 x 117.5 mm (4.1 x 4.6 inches)
Compression	10.8:1
Torque	163.0 Nm (16.6 kgf-m or 120.2 ft.lbs)
Power	120.0 HP (87.6 kW)
Engine details	ARCH/S and S Cycle T124 45-degree V-twin
Engine type	V2, four-stroke
Capacity:	2032.0 ccm (123.99 cubic inches)
Brakes, suspension, Frame and wheels
Wheels	BST Carbon Fiber â€œTurbineâ€ wheels. Michelin Power RS tires.
Rear brakes	Single disc. ABS. Four-piston monobloc radial mount caliper
Diameter	320 mm (12.6 inches)
Front brakes	Double disc. ABS. 6 piston monobloc radial mount calipers
Rear tire	8.50-17
Front tire	3.50-17
Rear Suspension	Ohlins / Arch proprietary rear shock with reservoir, hydraulic pre-load adjustment, fully adjustable
Front Suspension	Ohlins / Arch proprietary FGRT series fork, fully adjustable
Trail	112 mm (4.4 inches)
Rake (fork angle)	26.0°
Frame type	Billet and tubular steel frame with CNC machined aluminum backbone and sub-chassis
Physical measures and capacities
Power/weight ratio	0.4899 HP/kg
Dry weight	244.9 kg (540.0 pounds)
Other specs
Maintenance	Find parts, fluids, filters, maintenance tools and service items on eBay
Comments	ARCH Motorcycles are made i Los Angeles.
Light	LED headlight
Instruments	Digital
Starter	Electric
Color options	White/grey/red/black

Performance Profile & Rider Fit

120 hp

Peak Power

3.4s

0-60 mph

Best For

Track45%

City45%

Cornering60%

Daily Riding55%

Touring65%

Passenger55%

Rider Profile

Best For	This bike suits experienced riders who are comfortable managing a heavy, high-torque V-twin with a fat rear tire and aggressive geometry.
Purpose	It's built as a premium power-cruiser that blends muscular straight-line performance with boutique, hand-built craftsmanship rather than outright track ability.
Rider Fit	The low 800mm seat height aids reach to the ground, but the substantial 255kg dry weight demands confident low-speed handling and upper-body strength at a stop.
Character	Expect a bold, exclusive machine with a thumping V-twin character, premium Ohlins suspension, and top-shelf componentry that rewards a relaxed but assertive riding style.
Not Ideal For	This is not the right choice for new riders, off-road adventurers, or anyone seeking a lightweight, nimble commuter.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

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Rider Reviews

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MotorcycleDB Review

The 2021 Arch 1s motorcycle is a stunning work of art that seamlessly blends classic design with modern technology. With a powerful 2032cc V-twin engine and exquisite attention to detail, the Arch 1s delivers a thrilling and unforgettable riding experience. Its sleek and timeless silhouette, combined with top of the line components, make this motorcycle a true masterpiece on the road. From its carbon fiber wheels to its hand-stitched leather seat, every aspect of the 2021 Arch 1s motorcycle exudes luxury and precision. In addition to its breathtaking aesthetics, the Arch 1s offers exceptional performance and handling, making it a top choice for discerning riders. Whether you're a seasoned enthusiast or a newcomer to the world of motorcycles, the Arch 1s is sure to impress with its unmatched beauty and performance.