426 Bore
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LL_---I was just responding with what i have heard about the 426 with no sleeve. I hope you dont have any problems. RGB----I did install the XR400 cam and TitaniumValve springs (RD Heavy Duty) when I had it bored to a 416. It feels like a whole new bike! It will easily pull the front up in 4th gear with stock gearing!
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