300 4T Racing


300 SEF-R is in a class of its own, packing explosive power on demand across the power curve. Built on the same chassis as its smaller brother makes a dangerously attractive combination of advanced power delivery and nimble control to take you to the top.

Overwhelmingly approved during trade press tests, the 300 SEF is often deemed the ideal compromise for those that want to drive a 4-stroke motorcycle. Often imitated but never equaled, the 300 SEF is the pioneer in mid-range cubic capacity 4-stroke enduro motorcycles: a must-have !

An effective yet playful chassis, a powerful, torquey, and lively motor, it is the ideal tool for leisurely drives or chasing the chronometer. It is no wonder it is the motorcycle chosen by Jérémy Tarroux !

Key Features

Engine 4 stroke DOHC, 4 valve Sherco technology
Engine size 303.68 cc (18.53 cu in)
Bore & Stroke 84 x 54.80 mm (3.31 x 2.16 in)
Fuel system Synerject digital electronic fuel injection
Battery 12 V / 4Ah Yuasa
Cylinder lubrication
Cooling Liquid system with forced circulation
Start Unique electric starting system
Exhaust Stainless steel header pipe, aluminum muffler with catalytic converter meets Euro 3 stds.
Systeme Allumage
Transmission 6 speed sequential gearbox, primary gear drive chain secondary drive
Clutch Hydraulic, multidisc in oil bath
Frame Half perimeter frame Chrome-Molybdenum
Fuel Tank 8.5 Liter fuel tank (2.25 US gal)
Brakes Brembo Hydraulic Ø 260 mm (10.24 in) (front) Ø 220 mm (8.66 in) (rear)
Front suspension Ø 48 mm (1.89 in ) tubes rebound and compression adjustable 300 mm (11.81 in) of travel WP telescopic fork
Rear suspension WP progressive, multiadjustable rear shock utilizing a linkage and rod system 330 mm (13 in) of travel
Rear shock absorber
Front wheel 1.60 x 21” aluminum rim, steel spokes and Michelin Enduro Competition tube type
Rear wheel 2.15 x 18” aluminum rim, steel spokes and Michelin Enduro Competition tube type
Weight 102 kg (224.87 lb)
Wheelbase 1480 mm (58.27 in)
Ground clearance 355 mm (13.98 in)
Seat height 950 mm (37.40 in)
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