Sherco just released its 2018 line of off-road and trials motorcycles. The anticipated arrival of a production 125 two-stroke was the headliner. It features electric start, an electronic powervalve and WP suspension. The bikes that are returning to the line up are a 250 and 300 two-stroke, a 250 and 300 four-stroke and a 450 four-stroke. All will be available in cross-country and endure configuration. Below, you will find translated text from the official Sherco press release.
The 2018 Sherco 125SE-R has evolved considerably since it was shown a the EICMA show.
The Sherco 450SEF-R is the basis for a successful Dakar effort.
Matthew Phillips is the World Enduro GP champion with a Sherco 300SEF-R.
Sherco’s two-strokes have been very successful in Hard Enduro under riders like Wade Young.
- The 125 market is large in Europe, especially among young riders.
- Motorcycle developed 100% for enduro but tested in MX and sand.
- Tested in racing (French championships)
- Euro 4 homologation
- Attract young riders to Sherco brand
Product philosophy: making a high performance motorcycle
- Light weight and ease of handling that is a characteristic of Sherco motorcycles
- Be part of the reference 125 category (in competition and leisure)
ENGINE
- Starting system: Only electric starter located under the engine (Sherco 2T experience)
- More than 10,000 start-up cycles
- Rotative drum valve that permit progressive delivery of the power
- Electronic exhaust valve system: 2-piece drum including exhaust valve and boosters
- Exit exhaust slider system from 250/300 2T
- Drum valve
- Optimum sealing with the piston when the valve is closed
- Mechanically simple
- Easy to maintain and adjust
- Strong and reliable
- Precise control of valve opening according to the RPM
- Composed of 2 parts
- Light aluminum material
- Special shape to avoid sticking
Significant differentiation between Sherco and the competition
- 2 maps (Soft/Hard) standard with switch button 3HP difference
- Stability of combustion chamber with Water on all faces of the cylinder
- Water chamber under the valve system
- Monobloc cylinder head
- Head bracket design has vertical C shape
- Reduces stresses at the frame interface
- Keihin PWK 36 carburetor: A reference
- Viton intake pipe material : ease of assembly, improved reliability
- Number of parts reduced
- Carburetor fixed by only one clamp
- Vforce 4R reedcase:
- Low and midrange power gain 1 Hp
- Stoppers for an optimal life.
- Rubber on the reeds case to maintain sealing
- Powerful ignition: 220W
- Great for additional light connection
- Same power as 300 4T
- Double segment piston
- Increased sealing
- Longevity improved
- Viton exhaust gasket
- High temperature resistant.
- Optimized water pump
- DLC treatment shaft and specific high-pressure seals
- Standard turbine and gaskets
- Plastic pinions glass fiber raw material PA66 for weight reduction
- Crankshaft:
- Inertia studied for enduro: Provides excellent low end power with  a smooth transition
- Composite flywheels: PA66 glass fiber filler) secured with spacers to ensure optimum tightening
- FCC clutch discs: proved on our 4T models
Sherco’s experience adapted to the small engines
Specific 125 geometry
- Specification:
- Common base 250 / 300cc
- 15mm shorter wheelbase
- Steering angle reduced by 0.9 degrees
- Standardization:
Whole cycle and body part common to other Sherco models. (Wheels, swingarm, plastics, brakes, handlebars, tires, air box, saddle …)
- NEW WP 46 SHOCK
- Modified settings for better absorption
- Bottom and compression
- Eliminates link axle bending
- All models except 450
- NEW RADIATOR CAP
- Easier to access and open
- New Seat Material Luna Sella De La Valle
- Improved grip in wet conditions
- Inmolded Graphic Kit for 2018
- UV resistance fluorescent yellow
- PLASTICS MATERIAL
- 20 % more flexible
- Handguards have rubber built in
- Rear mudguard reinforced on rear number plate fixation
- Water resistance computer
- New membrane system
- Front light
- Reinforced mount
- New front light bulb for resistance to shocks and vibrations
- Protection rubber redesigned behind light
- Rear wheel axle
- New assembly process with Loctite and stronger tightening torque
- New gripster aluminium overmolded
- Better contact assembly
- MODIFIED SELECTION DRUM
- New shifter fork rollers on the 250/300 2T and 450 4T
- Selector drum profile modified for smoother gear changes
- Improved precision
- GEAR SELECTOR SPRING
- Stronger with longer service life
Tested and proven in the Dakar Rally
250 / 300 SE-R 2T 2018 :
ENGINE :
- BENDIX TORQUE LIMITOR
- Resistance system improvement
- The double pinion becomes torque limiter
ENGINE :
- SPROCKET DESIGN > PRIMARY TRANSMISSION DRIVE AND WATER PUMP MODIFIED
- Friction reduced
- Improved performance
- Less noise
- CLUTCH ASSEMBLY REINFORCED
- Increased reliability
- Clutch hub with different machining washer spacer location
- NEW WATER PUMP SEALING
- Output
- Longer life
- Seal ring adapted from 4T range
- NEW CYLINDER GASKET
- Longer life
- CLUTCH ASSEMBLY REINFORCED
250 / 300 SEF-R 4T 2018 common evolutions
- New Exhaust Pipe Collector
- Better response at low RPM
- The new shape provides heat protection for the riders boot
- Esthetic
- No heat protection plate necessary
- NEW SICLENCER
- More power
- Weight reduction: – 300 g
- Six Days design
- Stronger aluminum tube
- Improved impact resistance
- INJECTION MAPPING CALIBRATION
- Improved performance
- Better throttle response
- ALUMINIUM T COOLING SYSTEM
- Improved life in extreme conditions
- Ideal during extreme riding
- Maintains a more even engine temperature
- FUEL PUMP EVOLUTIONS
- Internal fuel circuit to avoid vapor lock effect
- Pressure regulation optimized (new regulator mount)
- NEW PISTON
- Longer life
- Compression increased
- More Performance
- NEW CRANKSHAFT WITH V CONNECTING ROD PROFILE
- Adapted to new piston
- The connecting rod has a viper shaped head
- NEW PISTON
450 SEF-R 4T 2018:
CYCLE PARTS :
- NEW SILENCER
- More power
- Weight reduction: – 500 g
- Six days design
- Aluminum
- Improved impact resistance
ENGINE :
- OIL CIRCUIT SYSTEM MODIFIED
- Better heat control
- More performance
- Dakar tested
- CLUTCH EVOLUTIONS:
- Clutch plate oil jet mount reinforced
- Neutral easier to select
- Reduced slippage
- CYLINDER HEAD EVOLUTIONS:
- Redesigned distribution chain tensioner adjuster (material / geometry) Dakar type
- Plastic Bush with different material
- Valve guides and seats modified due to new technology of machining
- Performance and longer life
- Reinforced cylinder head fasteners
- Clutch plate oil jet mount reinforced
- 2018 Cross Country Range
Available in all engine versions:
Benefits from all enduro evolutions:
- 125 SC-R:
- Blue Rims
- XPLOR Front fork
- Aluminium silencer with carbon tip
- Rear MX tire
- 250/300 SC-R:
- Mx Fork double cartridge with spring
- Fmf silencer
- Rear MX tire
- 250/300 SCF-R:
- Mx Fork double cartridge with spring
- Ackrapovic full exhaust system
- Rear MX tire
-
2018 Trial Evolutions
ST 125 / 250 / 300 Common evolutions
CYCLE PARTS :
- SUSPENSION EVOLUTIONS
- ALUMINIUM FORK TECH
- Lower weight: 850 g
- Comfort
- Steering optimized
- REIGER NEW SHOCK ABSORBER
- Absorption
- Traction
- Precision
- ALUMINIUM FORK TECH
Repeatability
- AIR FILTER MOUNT
- Easier to disassemble
- MODIFIED RADIATOR
- Easy water level control
- Improved access
- CLUTCH EVOLUTIONS
- Low volume AJP master cylinder
- Better control feeling
- Clutch receptor sealing optimized
- Profile of the hose has been modified
- Precision
- Reliability
- Frame reinforced for the exhaust mounts
- New Position Dual Map Switch
- Foot pegs Position Optimized
- Low volume AJP master cylinder
- Fuel tank vent hose relocated
- Rear Sprocket Protection
- More security
- Black Swing arm
ENGINE :
- Re map CDI:
- More performance at lower RPM and smoother transition
- ENGINE :
- New Dark Grey Crankcase color
- Evolution of diameter bigger blue
- Progressive exhaust 125 green
- Better cooling of the clutch by oil retention
- ST 125 Specific Evolutions
- ENGINE :
- New primary transmission ratio:
- Allows 9 / 44 secondary (same 250 / 300 ST)
- Sprocket diameter reduction
- Chain effect reduced
- Better shock absorption
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