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Technical Overview
2012 Sherco ST 4 Technical Analysis & Specification Breakdown
Engineered by Sherco for the trial motorcycle segment, the 2012 Sherco ST 4 relies on a 317 cc (19.3 cu in) single cylinder, four-stroke powerplant. Internal engine geometry specifies a bore and stroke of 82.0 x 60.0 mm (3.2 x 2.4 inches).
On the scales, the ST 4 measures 73 kg (161 lbs) dry. Rider ergonomics and chassis geometry center around a 645 mm (25.4 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,322 mm (52 in) wheelbase engineered for quick, flickable steering geometry. The 2.9-liter (0.8 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Standover Height
645 mm (25.4 in)
Engine
Displacement317.0 ccm (19.34 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsNikasil coated cylinder
Bore x Stroke82.0 x 60.0 mm (3.2 x 2.4 inches)
Valves/Cylinder4
Fuel SystemCarburettor. Keihin Ø28mm with SPS (Sherco Prompt System)
Fuel ControlSingle Overhead Cams (SOHC)
IgnitionLeonelli electronic digital
LubricationWet sump pressure lubrication
Transmission
Gearbox5-speed
Final DriveChain (final drive)
ClutchWet, multidisc
Driveline5 speed sequential gearbox with security selector system to prevent false shifts.
Performance
ExhaustSteel header pipe with an integrated aluminum muffler
Chassis
Frame TypeTubular section Chrome-moly
Front SuspensionTech Ø 39 mm hydraulic telescopic fork
Front Travel165 mm (6.5 inches)
Rear SuspensionProgressive link system with single Olle adjustable shock absorber,
Rear Travel175 mm (6.9 inches)
Wheelbase1322 mm (52.0 inches)
Ground Clearance310 mm (12.2 inches)
Wheels & Brakes
Front Tyre2.50-21
Rear Tyre2.75-18
Front BrakesSingle disc. Hydraulic
Front Brake Ø185 mm (7.3 inches)
Rear BrakesSingle disc. Hydraulic
Rear Brake Ø145 mm (5.7 inches)
WheelsGold anodized aluminum rim and aluminum hub, steel spokes with Michelin tube-type tire
Dimensions & Weight
Dry Weight73.0 kg (160.9 pounds)
Seat Height645 mm (25.4 inches) If adjustable, lowest setting.
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.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
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.
