Author Topic: Sherco SEF-R 300 2015 motorcycle does accelerate on low RPM  (Read 97 times)

hpemikoc

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Sherco SEF-R 300 2015 motorcycle does accelerate on low RPM
« on: April 07, 2021, 10:57:14 AM »
Hello

I bought used sherco sef-r 300 r 2015 with 200mh after recent piston replacement motorcycle does not accelerate smoothly in low RPMs.
First 30 minutes after starts its all good and then it engine starts to choppy (bottom RPM) .

Power Valve and electric wires has has been checked and cleaned without any improvement.

I have suspicion that it could be non OEM exhaust fmf-powercore-4 without incorrect map.

Can anybody else confirm that fmf exhaust has been used on racing model ?

my model
https://motocross-xxl.de/product/fmf-powercore-4-hex-slip-on-schalldaempfer-sherco-sef-r-sef-300-13-17/