TM EN 450 Fi 4T 2020
TM Racing EN 450Fi 4T - Twin Exhaust
Bore and Stroke: 95X63,4
Compression ratio: N.A.
Horse power: N.A.
Timing system: DOCH 4 valves
Lubrification: Dry sump with double rotor pump
Fuelling: Electronic Fuel Injection
Ignition: Kokusan Electronic
Clutch: Multiuple-disk in oil-bath with hydaulic control
Gear: 5 gears
Cooler System: Coolant liquid with pump
Starting: Electric start and kick start
Frame: Perimetral aluminium section
Front fork: Kayaba USD
Rear shock: TM Racing
Front tyre: 90/90X21
Rear tyre: 140/80X18
Front brake: Braking wave Disk 270 mm, with Nissin pump and Brembo caliper
Rear brake: Braking wave Disk 245 mm. With Nissin pump and caliper
Tank: Plastic 8,2 litres
250Fi / 300Fi / 450Fi / 530Fi: 4-Stroke Engines – Single Cylinder, Water Cooled, 4-Valve, Twin Cam, Fuel Injected.
Hand finished crankcases, lightweight and strong die-cast clutch casing, clutch inspection, water pump and ignition covers, cast water pump rotor, billet machined crankshafts (running on roller bearings with ‘hi-tech’ crankseal – 250Fi/300Fi), billet connecting rods, box-bridged pistons with DLC coated gudgeon pics, hand finished cylinder heads, titanium valves matched to copper beryllium valve seats, chain driven overhead twin camshafts actuating ‘finger followers’ on 250Fi/300Fi and ‘valve buckets’ on 450Fi/530Fi, twin rotor oil pump (dry sump type arrangement), high performance – long lasting clutches, ‘cush-drive’ clutch baskets, friction reduction hard coated clutch baskets, friction reduction hard coated gearbox selector fork tips, hardened gear-shaft parts, 5 speed MX / 5 speed EN 450Fi/530Fi – 6 speed 250Fi/300Fi (differing ratio) gearboxes, hydraulic clutch actuation, Battery-less ‘down-draught’ Electronic Fuel Injection, Kokusan digital variable advance ignition with twin map selection working with the fuel injection systems, gear position sensitive variable ignition timing, HGS ‘bomb’ type Exhaust systems. Electric start on EN and Road models, standard fitment on UK MX models and optional on SMX/FT 4-Stroke models models.
The TM Racing range of 4-stroke engines has become legendary for exceptional power delivery and outright performance and durability. The ability of these engines to perform has become renowned worldwide and for a ‘production’ engine the internal components and materials used are unmatched, many of these components and materials being of a level of quality that would only usually adorn the best of the ‘factory’ engine machinery. With an ever-growing list of results globally, in many disciplines, the 4-stroke range of TM Racing engines has spread to accommodate not only the off-road sector, but now feature in other motorsports. We have witnessed the 450cc engine being adapted for the karting sector where its unique lubrication system, working a twin rotor ‘recovery and distribution’ pump with a lower cavity oil chamber for containment that feeds pumped oil to every part of the engine, has allowed this engine to work with the huge cornering g-forces that karts can create where others struggle to lubricate themselves as the oil swells to one side of the engine. The ‘base’ variant of the 250Fi engine has also been adapted and now sees itself being currently developed in TM Racing’s Moto GP program in the competitive Moto 3 class, this revised engine has already taken Championship Titles. TM Racing’s 4-stroke motorcycle range has seen great success over the past seasons, with the SMX 450Fi machine now having taken multiple Supermotard World Championship titles, it currently leads the way once again and has become regarded as the bike to be riding in Supermotard to get the desired results. A purpose designed Supermotard bike that can be bought as a package, ready to thrive in this discipline where others are generally adapted machines created from other models. The 450Fi Enduro model was also recently adopted and developed to form the TM Racing Rallye bike, the 450 DKR / Rallye, a machine that has taken world championship victories in its class, a great testament to performance and durability in the harshest conditions. The 250Fi and 300Fi variants are also currently setting the world stage alight and have taken World titles in the hugely competitive World Enduro Championship. The latest MX 250Fi / 300Fi 4S machines have been turning heads and impressing riders globally with its sheer performance and handling, a superbly engineered racing machine that is outperforming its predecessor in all aspects and is set to achieve great results. This latest evolution of 250Fi / 300Fi engine features in the EN model also, albeit with revised configurations specific to the Enduro discipline.