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Old 10-21-2010, 08:44 PM
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wingracer
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Originally Posted by gt fast
i know im going to get a lot of crap for this question but look. noob to the onroad thing, how can i make my hpi rs4 faster. i want topend faster, with out changin my motor. i have the stock .15 and would like more speed on the top. i know it will sacrifice some bottom but thats fine. once again i want to keep my motor, but can modify it jsut dont want to change it.
Go up a tooth on the pinion gears (clutch bell).
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