The naraku 70cc cylinder kit v.2 For gilera rcr 50 2018-2020 is part of the latest collection from naraku.Features: the long proven 70cc naraku cylinder kit is now also available in a v.2 Version for d50b engines built from 2018 euro4 . The mould was adapted to the original d50b cylinder the cylinder is painted in the factory cylinder anthracite colour and therefore hardly distinguishable from the original naraku offers this kit exclusively with a 70cc cylinder head exactly matched to the cylinder the resulting compression ratio makes the kit a daily driver with rich torque and excellent acceleration values high revs and associated noise levels were deliberately not in the foreground with this sports cylinder the cylinder head thread matches temperature sensors built from 2018 with euro4 emissions standard this naraku cylinder kit is recommended for both standard and sports exhaust systems if the original carburettor remains installed, it is highly advisable to increase the carburettor jetting by about 7-10% guideline we recommend to use a sports carburettor 19mm specifications: material: aluminum product name: cylinder kit units: kit to fit: aprilia rs4 50 2018 european models aprilia rx 50 2018 european models aprilia rx 50 2019 factory european models aprilia rx 50 2020 factory european models aprilia sx 50 2018 european models aprilia sx 50 2019 factory european models aprilia sx 50 2019 european models aprilia sx 50 2020 factory european models aprilia sx 50 2020 eur...