2017 Hesketh Sonnet Cafe Racer

If a 2100cc engine just wasn't quite enough, Hesketh have gone and stuck a supercharger on the Sonnet as well.

The Sonnet is the newest hand-built motorcycle by Hesketh, an older a British motorcycle brand revived in 2010 by designer, developer Paul Sleeman, Hesketh Motorcycles owner and Chief Engineer.

Specs:

Engine Type is air-cooled V-Twin with 2,100cc displacement.

• Valve Actuation: Push Rod 2 Valves Per Cylinder
• Bore X Stroke: 105 mm x 110 mm
• Compression Ratio: 9:75:1
• Fuel System: Closed Loop Electronic Fuel Injection
• Ignition: Digital
• Start: Electric
• Security: Keyless Ignition & Immobiliser
• Exhaust: Two Into One Into Two: Stainless Steel

Frame

• Frame: Chrome-moly Tube Cradle Frame
• Swing Arm: Aluminium Box Section
• Rake: 25
• Trail: 96mm
• Front Wheel: 17" Dymag Carbon Fibre
• Rear Wheel: 17" Dymag Carbon Fibre
• Front Tyre: 120/70/ZR17
• Rear Tyre: 190/70/ZR17
• Handlebars: Clip on

Dimensions

• Fuel Tank Capacity: 13 Litres (5 US Gallons)
• Dry Weight: 235kg
• Seat Height: 30 Inches
• Wheelbase: 61 Inches

Transmission

• Gear Box: Rivera Primo 6 Speed
• Final Drive: 525 "O" Ring Chain
• Clutch: Brute Extreme Primary Belt Drive With Hydraulic Activation

Suspension

• Front Suspension: K-Tech
• Rear Suspension: K-Tech Bullit Springless

Power

• Power: 145PS @ 6000RPM 210Nm @ 3000RPM
• Brakes
• Front Brakes: Brembo Monoblock Radial
• Rear Brakes: Brembo Monoblock

Electronics & Controls

• Charging System: Cycle Electric Regulator & Stator
• Levers: Magura Powersports

Photo via Motorcycle News/Twitter

The Hesketh legacy:

• V1000 - 1982 | 1000 cc | 130 made - V-twin gentleman's tourer. The original machine came with a nickel-plated Reynolds 531 frame.
• Vampire - 1983 | 1000 cc | 50 made - Touring based version of the V1000, with fairing and optional panniers.
• Vortan - 1985 | 1100 cc | 1 made - Bored out 1100 cc, sports version of the V1000 with highly modified chassis.
• Vulcan - 1990 | 1200 cc | 1 made - A V1000 EN10 with a series of modifications including a bored out 1200 cc engine.
• Hesketh 24 – 2014 | 1917 cc | 24 made - In-production Limited Edition with 1917 cc S&S engine named after James Hunt's 1975 F1 car.