Cruisers
2021Arch 1S
37 fields on record
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.
- Capacity
- 2032.0 ccm
- Engine
- V-Twin, four-stroke
- Gearbox
- 6-speed
- Dry weight
- 244.9 kg
- Seat height
- 800 mm
- Power
- 120.0 HP (87.6 kW)
What’s new for the 2021 Arch 1S
vs the 2020| Spec | 2020 | 2021 |
|---|---|---|
| Power | 160.0 HP (117.7 kW) | 120.0 HP (87.6 kW) |
| Torque | — | 163.0 Nm (16.6 kgf-m or 120.2 ft.lbs) |
| Front brakes | Double disc. 6 piston monobloc radial mount calipers | Double disc. ABS. 6 piston monobloc radial mount calipers |
| Rear brakes | Single disc. Four-piston monobloc radial mount caliper | Single disc. ABS. Four-piston monobloc radial mount caliper |
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- It's built as a premium power-cruiser that blends muscular straight-line performance with boutique, hand-built craftsmanship rather than outright track ability.
- Built for
- 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.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Will it fit you?
Worked out in your browser - nothing is sent to usRange and running costs
Worked out in your browser - nothing is sent to usBased on the published US (EPA-style) fuel economy estimate and tank size. Real-world figures depend on how and where you ride, and the last litres of a tank are reserve. Prices shown greyed are examples - type your own.
Engine
- Capacity
- 2032.0 ccm
- Power
- 120.0 HP (87.6 kW)
- CO2 Emissions
- 188 CO2 g/km
- EPA Est. Fuel Consumption
- 8.01 L/100km (29.4 US mpg)
- EPA CO Emissions
- 5.0 CO g/km
- Torque
- 163.0 Nm (16.6 kgf-m)
- Engine type
- V-Twin, four-stroke
- Power/weight ratio
- 0.4900 HP/kg (dry)
- Bore x stroke
- 104.8 x 117.5 mm
- Compression
- 10.8:1
- Cooling system
- Liquid
- Fuel system
- Injection
- Starting
- Electric
- Aspiration
- Naturally aspirated
- Valves per cylinder
- 2
Transmission
- Gearbox
- 6-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Dry
Dimensions & weight
- Wheelbase
- 1661 mm
- Seat height
- 800 mm
- Dry weight
- 244.9 kg
- Fuel capacity
- 17.00 litres
Chassis & suspension
- Frame
- Billet and tubular steel frame with CNC machined aluminum backbone and sub-chassis
- Front suspension
- Ohlins / Arch proprietary FGRT series fork, fully adjustable
- Rear suspension
- Ohlins / Arch proprietary rear shock with reservoir, hydraulic pre-load adjustment, fully adjustable
- Rake (fork angle)
- 26.0°
- Trail
- 112 mm
Brakes & wheels
- Front brakes
- Double disc. ABS. 6 piston monobloc radial mount calipers
- Front brakes diameter
- 320 mm
- Rear brakes
- Single disc. ABS. Four-piston monobloc radial mount caliper
- ABS
- Yes
- Front tyre
- 3.50-17
- Rear tyre
- 8.50-17
Other
- Color options
- White/grey/red/black
- Comments
- ARCH Motorcycles are made i Los Angeles.
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
What changed, year to year
Differences highlighted| Specification | 2018 | 2019 | 2021 | 2022 | 2023 |
|---|---|---|---|---|---|
| Capacity | 2032 cc | 2032 cc | 2032 cc | 2032 cc | 2032 cc |
| Dry weight | 245 kg | 245 kg | 245 kg | 245 kg | 255 kg |
| Seat height | 800 mm | 800 mm | 800 mm | 800 mm | 800 mm |
| Fuel capacity | 17 L | 17 L | 17 L | 17 L | 17 L |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the Arch 1S?
The 2021 Arch 1S has a Capacity of 2032.0 ccm (124.00 cubic inches).
What engine power does the Arch 1S have?
The 2021 Arch 1S has a Power of 120.0 HP (87.6 kW).
How many gears does the Arch 1S have?
The 2021 Arch 1S has a Gearbox of 6-speed.
What is the torque of the Arch 1S?
The 2021 Arch 1S has a Torque of 163.0 Nm (16.6 kgf-m or 120.2 ft.lbs).
How much does the Arch 1S weigh?
The 2021 Arch 1S has a Dry weight of 244.9 kg (539.9 pounds).
Shop this bike
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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.
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