hi can anyone tell me what KEIHIN CARB will fit my sons 09 gas gas 125 and will it need anything else for it to fit thanks

Hi Stepbridge

As far as i know Keihin only produce one flatslide that will suit - the PWK28 (28mm). You may want to consider other options eg the OKO range of flatslides eg 26mm for the 125cc. Do a google search for a PWK28 or OKO 3040. I keep using an OKO 3040 on my son's bikes. From experience with the 125cc bikes, with the Keihin 28mm you gain power but it comes at the sacrifice of torque and the bikes seem a bit harder to tune. Whereas the 26mm OKO provides crisper power delivery with no noticable torque sacrifice and a more stable tuning platform. Just my opinion, someone else may have found different.

Re fitment, PM me if you want more info.

WTC