2-5 th gear wheelies fcr upgrade kit test ridin on our drz400sm with the keihin 41mm
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This a 09 drz400sm all stock with only a Yoshimura pipe and our 41mm carburetor kit. Bike runs better in every part of the power band. The best performance upgrade for the drz400, without losing reliability.
check it out here-
https://oemdirtbikeparts.com/product/drz400-keihin-fcr-upgrade-kit-complete-carburetor-performance-mod-39mm-assembly/
https://oemdirtbikeparts.com/product/drz400-carburetor-upgrade-kit-complete-keihin-fcr-mx-41mm-assembly/