turbo Posted March 31, 2011 Report Share Posted March 31, 2011 Hi, apart from the obvious advantage of extra strength, why do some upgrade the chain and sprockets on their rear kick Fantic 200,s to the larger 520 size? .Any opinions on this subject would be very helpful .Thanks. Quote Link to comment Share on other sites More sharing options...
lee harris Posted March 31, 2011 Report Share Posted March 31, 2011 Keep to the 428 chain. An R1 renthal in this size will last very well. A 520 chain weighs more and will use 1-2 HP from the motor Quote Link to comment Share on other sites More sharing options...
b40rt Posted March 31, 2011 Report Share Posted March 31, 2011 Hi, apart from the obvious advantage of extra strength, why do some upgrade the chain and sprockets on their rear kick Fantic 200,s to the larger 520 size? .Any opinions on this subject would be very helpful .Thanks. Not sure a 520 is any stronger, depends on the relative quality. 428 is standard on my B40 which weighs at least 1/2 again. Quote Link to comment Share on other sites More sharing options...
turbo Posted March 31, 2011 Author Report Share Posted March 31, 2011 thanks ,that makes sense, regards. Quote Link to comment Share on other sites More sharing options...
timolgra Posted April 4, 2011 Report Share Posted April 4, 2011 I fitted a RK heavy duty 428 to mine and it seems great. Quote Link to comment Share on other sites More sharing options...
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