yeh it does have 1
75mph
no
As far as I know you can only do this for the 250 models. However, there is a FMF Powercore muffler available for the CRF150F that is equally good or even better.
The out put is about 99 db, but if you want you can get the mega bomb header and the quiet core insert to lower it to about 94 db but that's about as quiet as it will get.
bout 0.9km depends max speed maybe 1km cause your a crap rider probaly 0.9km
here's a good list of exhaust and silencers you can put on your rm80/85: FMF fatty, FMF SST, FMF Factory Fatty (copied version of Fatty), FMF Shorty silencer, FMF Powercore 2 silencer, FMF turbine core 2 (trail riding and neighborhood riding Pro Circuit Platinum, Pro Circuit Platinum 2, Pro Circuit 304 Shorty Silencer, Pro Circuit Spark Arrestor Silencer(neighborhood and trail riding), Pro Circuit 304 factory silencer
i have a crf 80f with an fmf powercore 4 and I've got it up to about 60 when there was perfect conditions.so without it ur probly looking at about 50-55 tops.
fmf
It stands for flying machine factory.
how cam you download a fmf cleance certificate
the fmf power core 4 will give you the most bang for your buck
One can purchase an FMF exhaust system directly from FMF's website, or through another authorized retailer such as MotoSport or JC Motors. It is not recommended to buy an FMF exhaust from a secondary source, due to a lack of warranty coverage.