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Big bore kits

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6 hours ago, SKIPPY PB said:

Quick question, couldn't find an answer. Do drz400 Big bore kits come pre-honed?

If your question is, 'Are they ready to assemble?' the answer is YES.

(Nic-a-sil bores do not get honed like iron bores)

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I thought nic-a-sil or whatever was the stuff they used on the OE 2014+ DRZ's? Aftermarket kits liek cylinder works, athena, etc are all nic-a-sil stuff? thats interesting, so it really is bolt on then it seems.

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Most high performance dirt bikes have been using nikasil coated aluminum cylinders since the 80's. The DR-Z has always been aluminum.

 

The name brand kits all use plated aluminum bores with matched aftermarket pistons.

There are some low dollar kits on eBay with iron sleeves. Personally, I would spend the extra couple hundred bucks not to go back 30 years in technology.

 

 

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