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If the sled is stock with the original hood, then look at the underside of the hood near the headlight and it will tell you. It should give the optimum RPM at which peak power is achieved to get the right clutching...... Hope this helps.
 

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Stock was 8100-8200. Keep it in that range with a single pipe...that is where it makes it's power

'96 Ultra Sp
'97 SPX
 
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