The changes for the 2014 model range which included, a new piston design, a new clutch basket with a friction reducing coating combined with new fibre plates all remain for 2015 but with the big addition of TM Racing's electronic fuel injecton system now being fitted in place of the regular carburettor which has seen a very extensive re-design take place for this large capacity 4-stroke machine. This includes a new inlet ducting system, throttle body and air funnel into the venturi to improve air feed for power maximisation, a new exhaust system allowing for greater performance and smoother power delivery all matched to revised ECU settings and a gearbox position sensor connected to the ECU to maximise performance and power delivery for any given gear ration by altering the fuelling and timing of the fuel injection system.
Chassis changes include new chassis geometry with modified front fork rake for increase turn-in, stability and all round 'lighter' handling characteristics a longer swing-arm for better bike balance and weight distribution, a new rear shock length (8mm) and revised linkage for better progression and traction in all conditions working with revised suspension settings. The big change in the chassis department is the adoption of the new component layout designed to optimise weight balance, handling and engine performance, this features an intake system over the engine and the positioning of the fuel tank under the seat for a much more balanced machine and lower centre of gravity. Also featuring is a new rear wheel spindle diameter for greater strength and less deflection of the swing-arm, a new triple clamp arrangement with less offset to improve rideabilty of the new chassis layout and weight transferal system, a new air filter for better efficiency of the new intake system ans a new plastic design in a fresh and aggressive style featuring a new seat arrangement and fresh graphics in an Italian theme.
Single cylinder water cooled 4 stroke engine, double overhead camshafts operating titanium valves via a 'bucket' system, billet connecting rod with a forged piston, dry sump with twin rotor oil pump for recovery and distribution, HGS 'bomb' type exhaust system. Electric start is also available as an option on 4 stroke Motocross models at time of order.
Bore and Stroke: 98X70 Displacement: 527,7 Compression ratio: N.A. Horse power: N.A. Timing system: DOCH 4 Titanium valves Lubrification: Dry sump with double rotor pump Fuelling: Battery-less Electronic Fuel Injection with 44mm throttle body Fuel: Super-unleaded Ignition: Kokusan CDI Electronic with variable advance Clutch: Multiuple-disk in oil-bath with hydaulic control Gear: 5 gears Cooler System: Coolant liquid with pump Starting: kick start (optional Electric start) Frame: Perimetral aluminium section Front fork: Marzocchi USD/Kayaba USD Rear shock: TM Racing Front tyre: 90/90X21 Rear tyre: 110/90X19 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