The Beta RX 450 4T is officially the first four-stroke motocross bike built by the Italian manufacturer, and has been developed after competing in the MXGP World Championship for the last three years. It is now being released for enthusiasts of all abilities, and will provide the first chance for the wider public to experience Beta RideAbility.
To fulfil the RideAbility promise, Beta’s team spent its time designing a bike that appeals to all riders, whatever their level of skill. It requires making the bike easier to ride while still providing top-level performance for racing, thanks to an engine and frame combination which is new from the ground up.
The RX 450 has a new aluminium rear sub-frame, which provides rigidity to the bike despite its light weight. The Kayaba suspension is fully adjustable at both ends, with 48mm stanchions at the front and 50mm shock at the rear. The engine has been designed specifically for motocross use: the crankshaft and countershaft are new, as are the cylinder, pistons and timing system, allowing a compression ratio of 13.5:1 to be achieved. The gearbox is five-speed, with dedicated ratios. At the same time, the clutch (with diaphragm springs, adjustable to three positions) has been designed to withstand the stresses from the engine’s high-power output while still offering a light pull at the lever. The weight and dimensions are exceptionally compact. The RX 450 4T is also equipped with two specific engine maps (wet and dry) and four levels of traction control to manage the bike’s power in all terrain conditions.
John Lampkin Imports
01756 793521
www.beta-uk.com