Thats why i use HRC RS250 coils on my NSR's.Last time with stock coils was 5 years ago at Megara track with my MC18R6K when the coil of the front cylinder died and i lost the last section.But i think the discuss about coils is out of topic.
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Owner of : Honda NSR250 MC28 95sp colours / Honda NSR250 MC18 R6K SP / Honda RS250 NF5 89 in boxes / Honda C50 12V cub / Honda C50 12V super cub Japanese version /Yamaha XT600 89 benetton