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The 85cc / 100cc / 112cc machine receives some small but significant technical updates for the new model year, all designed to further enhance an already incredible package. With a growing reputation of being one of the best ‘out-of-the-box’ 85cc machines on the market, the TM MX Junior machine has an ever-increasing track record of excellent results and great reliability. With a chassis that not only gives superb riding characteristics but is also one of, if not the, lightest on the track in real world terms, matched to an engine that has a great spread of usable, class leading power. The smallest machine of the TM Racing brand range is constructed with not only performance in mind but also durability and is well received by amateur and professional alike in its characteristics.
The aluminium chassis, a first for a ‘Junior’ model, not only looks incredible but also delivers the lap times when matched to the ‘factory’ type fork and shock absorber arrangement. For the new model year the aluminium frame has seen some small construction revisions, likewise small revisions apply to the suspension configurations (including an ‘optional’ front fork) and the settings utilised create a chassis with great response to terrain changes. Improvements in stability and rear wheel traction combine with the confidence inspiring ‘over-sized’ braking system – that keeps working in the harshest conditions – to give a great chassis package of tried and tested components. Built to perform and keep performing whilst maintaining lightweight and retaining ‘upmarket’ componentry and strength throughout, the TM 85 MX is an incredible machine.
The water-cooled, power-valve type engine features a billet machined crankshaft, a machined and ‘treated’ con-rod, hand finished crankcases – that feature a water jacket around the crankshaft area for reducing crank temperatures, V-force reed block, hand finished cylinders, an ‘oversize’ gearbox and clutch arrangement – for superb durability and ultra-reliable clutch performance, die-cast clutch casing and ancillary covers for a smooth look, lighter weight and superb strength, a Kokusan ignition system and Scalvini exhaust system, all fed by a Keihin 28mm carburettor with an oversize intake bell mouth, breathing through a large volume Twin-Air air filter.
For the new model year, the already outstanding small capacity ‘Junior’ engines will see only minor changes and revisions, it will continue to adopt the previous model year specifications changes which included a new crankshaft running on ‘friction reducing’ roller main bearings, new crank-seals designed to ensure increased seal durability whilst reducing frictional losses, alterations and weight reductions to the gearbox and a new clutch basket fixing system. The cylinder continues to adopt the latest updated configuration and port timing arrangement that was designed to maximise performance throughout the rpm range when combined with the twin-blade power-valve system revision and port shapes. All these changes are of course harmonised with the ECU ignition settings to give the best overall power delivery and create one of the highest performing engines in its class. Chassis components include, billet triple clamps, billet hubs laced to excel rims, billet rear brake lever, oversize brake discs with oversize calipers, braided brake and clutch lines, hydraulic clutch, Mupo / Tech Race Fork, Extreme Tech shock absorber, the specification is endless. For 2023 the aesthetic look of the Junior machine will remain the same, replicating its bigger brethren in many aspects. The adoption of a new decal scheme, incorporating some brighter colour accents, will give a more striking visual appearance. A machine built with purpose, using some of the best components and materials available, designed to perform and keep performing without the need to invest heavily in after-market parts or tuning, giving an excellent package of high performance, superb handling characteristics and light weight, with excellent reliability.
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