400ex stock exhaust mod?
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I would assume you are asking about me.The stock exhaust mod works quite well but getting the WB pro meg system netted even stronger gains throughout with even quicker rev ability.I wish I would have done it sooner.The engine is plenty strong now.I will be putting off any further engine mods as I now have passed the limits of my suspension.If you still want details of mods to stock exhaust plus the pics I took of finished end cap email me-demp223@jps.net.Its a good fix temporarily for some cheap gains until you get a good pipe like the pro meg.
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fordfaithful21
Polaris Ask an Expert! In fond memory of Old Polaris Tech.
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12-07-2015 05:52 PM
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