Question about 2005 Hyosung GT 650

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2007 Hyosung GT650 - does it use roller bearings on the crankshaft or white metal bearings? Mine just "ran" bearings after a fast run on the highway - at least, that is my assumption. Serious knocking from the bottom of the motor, that sorta eases off on a steady throttle and gets worse the moment you pick up the revs. Am I correct in assuming either a big end bearing or a main bearing gone on the crank? Bike still has compression, so unlikely to be one of the heads/valves.

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Hi, Gavin_grimet the big end rod bearing are caged rollers the crankshaft assembly is supported in the crankcase by ball bearings. Let me put this gently, you hear a knock knock and nervously say "who's there?" a deep raspy voice responds it's me "*****" For more information about your question and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
HYOSUNG GT 650 Service Manual
http://www.alpha-sports.com/hyosung_parts.htm
HYOSUNG GT650 Owner Manual
Hyosung GT650 ***** GT650 Comet 2007 Hyosung GT650 Wikipedia

Posted on May 31, 2017

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Hi ....... I don't think Suzuki make an upgrade kit but try Straightline Racing, Harris Performance or EBC themselves, lots of kits available. They'll also be able to advise if it'll fit the gt650.

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I suspect one is missing.

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