[443thumper]

does anyone know what needle and settings to use for a 06 crf450r with a jardine full system? i ride in 1500-2500 ft elevation most of the time. any help is greatly appreciated.

[jt1872001]

i just put the jardine rt4 system on my 07 crf450r and removed the backfire screen from the air filter and installed twin airs fire resistant filter ...ran great jetting seemed good stock.