Naked Motorcycles

2021Ariel Ace

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The 2021 Ariel Ace is a hand-built naked bike with an eye-catching exposed frame and Honda V4 power. Its 1237cc liquid-cooled V4 makes 173 hp and 131 Nm, with a low 745 mm seat and ABS.

Capacity: 1237.0 ccm
Engine: V four, four-stroke
Gearbox: 6-speed
Dry weight: Not on record
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Seat height: 745 mm
Power: 173.0 HP (126.3 kW) @ 10000 RPM

⇄ Compare with another bike ＋ Add to garage All model years

Other years 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail5%

Cornering92%

City riding55%

Daily riding50%

Touring45%

Two-up30%

Track90%

Best for: Built for thrilling backroad blasts and track-day carving where its lightweight chassis and Honda V4 power can be fully exploited.
Built for: An exclusive, boutique performance machine that blends motorcycle-grade agility with car-like engineering flourishes like shaft drive and a bespoke aluminium frame.
Not ideal for: Not suited for new riders, off-road use, or anyone seeking a comfortable long-distance touring companion.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Will it fit you?

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Your height

Inseam (optional)

Units

At 745mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with both feet flat on the 2021 Ariel Ace, with a relaxed knee angle of around 120 degrees and a forward-leaning riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at 750 mm or under — Short Kings →

Find bikes that fit your height →

Full specifications

Engine

Capacity: 1237.0 ccm
Power: 173.0 HP (126.3 kW) @ 10000 RPM
Torque: 131.0 Nm (13.4 kgf-m) @ 8750 RPM
Engine type: V four, four-stroke
Bore x stroke: 81.0 x 60.0 mm
Cooling system: Liquid
Fuel system: Injection
Starting: Electric

Transmission

Gearbox: 6-speed
Transmission type: Manual
Final drive: Chain

Performance

Top speed: 265.0 km/h (164.7 mph)

Dimensions & weight

Wheelbase: 1541 mm
Seat height: 745 mm
Fuel capacity: 12.00 litres
Dry weight: Not on record - add it

Chassis & suspension

Frame: Anodised machined and welded aluminium perimeter frame
Front suspension: Showa 43mm adjustable cartridge type telescopic forks
Rear suspension: Pro link single sided swing arm. Showa adjustable damper

Brakes & wheels

Front brakes: Double disc. ABS. 6 piston radial calipers.
Front brakes diameter: 320 mm
Rear brakes: Single disc. ABS. 2 piston sliding caliper.
Rear brakes diameter: 276 mm
ABS: Yes
Front tyre: 120/70-ZR17
Rear tyre: 190/50-ZR17

Other

Color options: Red/white/gold, White/black, custom colors
Comments: Optional carbon parts. Optional DCT Dual Clutch.

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	2016	2018	2021	2023	2025
Capacity	1237 cc	1237 cc	1237 cc	1237 cc	1237 cc
Seat height	745 mm	745 mm	745 mm	745 mm	745 mm
Fuel capacity	12 L	12 L	12 L	12 L	12 L

Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.

Rider Reviews

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MotorcycleDB

The 2021 Ariel Ace motorcycle is a stunning blend of power and precision. With its sleek and modern design, this motorcycle is a true head-turner on the road. The Ace is equipped with a powerful 1237cc V4 engine that delivers an exhilarating riding experience. It also features top-of-the-line suspension and braking systems, providing the rider with ultimate control and stability. Whether you're cruising on the highway or carving corners on a winding road, the 2021 Ariel Ace delivers a thrilling and responsive ride.

In addition to its impressive performance, the 2021 Ariel Ace motorcycle also offers a customizable riding experience. Riders can choose from a range of options to personalize their Ace, including different seat heights, handlebar styles, and exhaust options. This level of customization allows riders to tailor the Ace to their specific preferences, making it a truly unique and personalized riding experience. Overall, the 2021 Ariel Ace motorcycle is a top-of-the-line machine that combines power, precision, and customization for a truly exceptional riding experience.

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