This Athena tuning cylinder kit differs technically only slightly from the cylinder kit that was specially developed for the Yamah a WR 125. The most significant difference between this and the other Athena kit is the mapping of the ECU, which in this case was adapted to the Yamaha MT 125. This ensures optimal performance for the handling of a naked bike.
The cylinder kit is supplied with Plug & Play ECU unit. With a selector switch for the handlebars you can use one of the two maps. Either Map1 "Fullpower", according to Athena best suited for dry conditions, or Map2 "Soft Response" here the start of the MT is slightly throttled, but the power remains the same.