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Digital Subscriptions > Fast Bikes > Issue 322 January 2017 > DO SILICONE HOSES ACTUALLY MAKE A DECENT DIFFERENCE?


More than just making your bike look cooler, an aftermarket hose's job is to better what comes as stock. So just hold fire on ordering that cheap set of Chinese hoses you're eyeing up...

It’s all about thermodynamics. The idea of a silicone hose is Ithat you replace the standard hose so it doesn’t expand and get hot under pressure. When heat is generated, it expands; water is heated and the hose is there to prevent excessive growth as the pressure rises, so your running pressure is reduced.

Investing in the engine? Invest in some decent hoses, too

Your brand-new bike, say an R1, has OEM hoses that are brilliant. Manufacturers recommenced you replace them every four years as rubber breaks down over a period of time. As the rubber breaks down, it gets softer, so subsequently your engine gets warm, the water expands, the hose expands and pressure inside is reduced. As the system pressure reduces, water temperature and boiling points rise and you’re more likely to overheat. The bottom line is, there’s nothing wrong with standard hoses – providing they are in good working order.

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Fast Bikes is home to the best sportsbike tests on the planet and is packed with new bike launches, technical insight, hardcore action, masterclasses, racing, reviews and loads more.
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