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Discussion Starter #1
I was wondering if there is anything on the market to make my 400 H.O. more power full and or increase acceleration and speed. We have 2 400's both are 12's and when me and my dad race mine always seems to lack of all three. Mine has a K&N filter and my dads is completely stock. :cowboy:
 

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Keep the airfilter and get a dynojet jet kit, slip on exhaust, and an aftermarket primary clutch spring..
 

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Discussion Starter #4
What is the dynojet kit going to do for me?

What will the dynojet kit increase? And how hard is it to install???
 

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It will adjust your carburetor for the added air flow from the air filter and the free flowing exhaust. If you have basic carb skills its not much of a problem to install. The primary clutch spring will help your bike accelerate, and bring in the powerband much sooner. One of these items will not bare you much of a benefit but with all of them your bike will be a whole new animal..
 

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It will adjust your carburetor for the added air flow from the air filter and the free flowing exhaust. If you have basic carb skills its not much of a problem to install. The primary clutch spring will help your bike accelerate, and bring in the powerband much sooner. One of these items will not bare you much of a benefit but with all of them your bike will be a whole new animal..
Some good advice here :dito:
 

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