Sport · 2020
1s
Technical Overview
2020 Arch 1s Technical Analysis & Specification Breakdown
Built around Arch's sport motorcycle platform, the 2020 Arch 1s pairs a 2032 cc (124 cu in) v2, four-stroke architecture with road-focused gearing. Internal engine geometry specifies a bore and stroke of 104.8 x 117.5 mm (4.1 x 4.6 inches) with a 10.8:1 compression ratio.
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.
Engine
Displacement 2032.0 ccm (123.99 cubic inches)
Engine Type V2, four-stroke
Compression 10.8:1
Bore x Stroke 104.8 x 117.5 mm (4.1 x 4.6 inches)
Fuel System Injection
Transmission
Gearbox 6-speed
Final Drive Chain (final drive)
Clutch Dry
Performance
Exhaust ARCH/SC Project MotoGP-inspired titanium/carbon fiber/billet aluminum exhaust
Chassis
Frame Type Billet and tubular steel frame with CNC machined aluminum backbone and sub-chassis
Rake 26.0°
Trail 112 mm (4.4 inches)
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
Wheels & Brakes
Front Brakes Double disc. 6 piston monobloc radial mount calipers
Front Brake Ø 320 mm (12.6 inches)
Rear Brakes Single disc. Four-piston monobloc radial mount caliper
Rear Brake Ø 266 mm (10.5 inches)
Wheels BST Carbon Fiber “Turbine” wheels. Michelin Power RS tires.
Other
Starter Electric
Color Options White/grey/red/black
Instruments ARCH/AIM Digital instrumentation
Light LED headlight
More from Arch
Buying Checklist
Before You Compare This Bike
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.
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.
Estimate
Ownership Cost Calculator
⛽ Fuel
per year
🔧 Maintenance
per year
🛡️ Insurance
per year
TOTAL
* Estimates only. Actual costs vary by country, riding habits, insurance provider and maintenance schedule.