2007 Honda CR450R

2007 Honda CRF450R: Refining the Carburetted CRF Formula

The 2007 Honda CRF450R was an evolutionary update rather than a new generation. Honda had already established the basic platform with the major 2005 redesign and the mass-centralisation changes introduced for 2006, so the 2007 model concentrated on refining engine delivery, durability and braking performance instead of replacing the chassis or engine architecture.

One of the more noticeable changes was the move from the previous 40 mm Keihin FCR carburettor to a 41 mm unit. Honda also revised the exhaust valve specification and decompression system, with the aim of smoothing the CRF450R's famously strong power delivery. The result retained the huge torque and midrange that made these carburetted CRFs popular while making the transition from low rpm into the main powerband slightly easier to control. Owners maintaining an original carburettor can compare options through the MXOwners carburettor reference.

Honda also strengthened the clutch basket for improved durability and fitted a revised front brake master cylinder intended to provide greater braking force. Suspension remained Showa at both ends, although fork damping was revised in an effort to improve compliance. Correct servicing remains particularly important with the 47 mm twin-chamber fork, and the MXOwners fork oil reference can be useful when checking fork service information.

For today's owner, the 2007 CRF450R represents the mature stage of Honda's pre-fuel-injection 450 development. It retained the aluminium twin-tube chassis, five-speed gearbox, Unicam 449.4 cc engine and straightforward carburetted fuel system that many riders still value for its mechanical simplicity. When restoring one, the MXOwners parts finder can also help identify replacement components across the bike.

The 2007 model did not rewrite the CRF450R formula, but it refined a package that was already highly competitive. Its combination of powerful carburetted four-stroke performance, predictable chassis behaviour and relatively simple mechanical layout has helped make this generation a popular choice for riders who still prefer the feel and serviceability of the pre-EFI era.