I WAS LOOKING AT PURCHASING A USED SCRAMBLER 400 [2 STROKE] 4X4 AND WAS JUST LOOKING FOR ANY INFO THAT ANYONE HAD ON THESE BIKES. THANKS.

 

Be ready to do a topend and replace the piston and bore it out.You pipe and clutch it it will smoke your 400EX

 

WHICH IS THE BEST EXHAUST FOR IT? HOW MUCH DO THE CLUTCH KIT COST















































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Depending on where and how you ride and what gains you are wanting here are my recommendations
Tight trails and low speed ridding-Dynoport pipe with a Dalton blk/white primary spring,Aaen blue secondary spring set 2-2 and stock weights.
Fast trails-HPD Trail pipe and matching clutch kit or Aaen Topend pipe and matching clutch kit
Best $$$ deal-RcR stage1 kit
Pipe and silencer will run $250-$350,silencers $50-$150,clutch kits around $100 and clutching is a MUST when changing pipe except for the Dynoport

 

just go with an RCR stage one kit ad get him to replace his pipe with an HPD pipe, it will run you 345$ for everything. the kit even includes clutching.

 

RcR kit is great but I have a fond spot for the Dynoport because you can run it with a low engagment speed

 

i went to dynoports site and their TB pipe only gives like 4hp gain, whereas the hpd gives 7-8.

 

<div class="FTQUOTE"><begin quote>Originally posted by: trailblazer_02

i went to dynoports site and their TB pipe only gives like 4hp gain, whereas the hpd gives 7-8.</end quote></div>

I have ridden both and the Dynoport comes on in the low/mid range and pulls hard to top.The HPD has a higher engagment rpm and hits hard in the mid/top end range.Depending on how you ride both are good systems with decent power gains but at dif points.