Think your CRF needs more low-end power? You are not alone! Even Honda themselves thought the same thing, that's why for 2003 they redesigned the cam to provide more low-end. White Brothers has created an adjustable cam sprocket to do just this. While it is not a night and day difference, it is noticeable and provides and extra boost when shooting out of corners.
The
increased power is achieved through advancing the intake valve
timing. As far as weight is concerned for
you gram counters out there, the WB sprocket is essentially
identical to stock. The sprocket increases power from 1700 to 7000
rpm. At $74.95 this is a product I would recommend to anyone
looking for more low-end. Installing the WB
sprocket did not warrant any jetting changes. You may need to play
with the fuel-mixture screw if the off-idle response seems a little
off. This product is applicable only to 2002 models. Once again WB
has made a winning product.
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