
I have myself held both main jets (117.5 from Pulsar and 125 from Karizma) in my hands, and the Karizma's hole was clearly bigger. This was when I installed RC1060 on my Pulsar. I have also used Achiever's main jet (#118) which is again for a Keihin carburetor and that too was minutely bigger than 117.5 from my Pulsar. This was when I was getting Joel's kit installed.
My assumption is that now jet sizes are standardised and Hero Honda measures their jet sizes in Mikuni standards. Or maybe the standards are for the international versions of these carburetors... or something similar.
@ Sangam Arora: Buddy, I can confirm that Karizma's main jet (#125) costing Rs. 153 fits your bike, because it did fit mine too.
I haven't held or fit RTR's jet yet. Theoritically, it should be the appropriate size and fit well too.



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