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· Premium Member
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Is this a 400EX or a TRX400? Need more info... a detailed list of mods on the motor and bike is necessary. Compression ratio and Camshaft info, head rework, etc? Unless it was being set up to run on Methanol (or the builder screwed up on choice of camshaft grind), 110 octane racing fuel is not required. Also need to know about the exhaust system and the carb & airbox that is on it. Everything you can tell us about it in detail.
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