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The CRF450R-S’s twin-spar aluminum frame positions the rear shock’s mounting point lower, opening up the airbox area and contributing to a lower center of gravity for more holeshots. The frame geometry also helps improve traction, feeling and steering precision.
We’re talking about a special ECU program here: push the button to select the mode, hold the throttle open, release the clutch, and the CRF450R-S will do the rest, launching you into the first turn with a big advantage. It turns your bike into a holeshot-seeking machine!
By ditching the kickstarter entirely, our engineers have made the CRF450R-S lighter. Electric starters and lithium-ion batteries are so light now and so good that putting them on a bike like this is a win/win combination. And winning is what a CRF450R-S is all about.
Honda Unicam cylinder head combines the best of single- and double-overhead-cam designs. The configuration contributes to a compact engine that saves weight over a comparable dual-overhead-camshaft motor and also permits a narrow included valve angle. This flattens the combustion chamber to facilitate ignition flame propagation, allowing a high compression ratio. Since less space is taken up in the cylinder head, the camshaft sits lower in the head for a more compact engine and a lower center of gravity.
450cc liquid-cooled single-cylinder
96mm x 62.1mm
Unicam SOHC; four valves per cylinder
Programmed Fuel Injection (PGM-FI), 46mm downdraft throttle body
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