Can someone give me a summary of what kits are available and who sells them? Who's kits are fastest? Who's kits are more reliable? What does it take to have a Rotax built? How much $$$ are we talking about? What about the "externals" such as carb, reeds, etc.? How would I get the engine setup & running after the internal mods? I'm looking into building a respectable dune machine. I will also be looking into mods for better handling - to be able to run with trx250r's without being beatup by poor handling.

Thanks.

 

Trinity has a set of big bores, from 420 to 570.
420 normal rod is 699$ , 420 long rod is 999$, 500 is around 3299$ (and not 3400 as previously said) and 570 3999$.
Their website is www.trinityracing.com

Alba has 370cc and 400cc (don't know much more about it). There's also the turbo (100hp ) but more than 5000$ (ouch).
www.albaaction.com (I think)

Vito's sells big pistons and sleeves from 67mm to 69mm...It makes a 400cc, for 420$.
Don't know their website.

My question now.
HOW DID THEY FIT THE 680 ROTAX?? someone must know something about it!!!

Something that you have to know about those machines. At the end of the "power day" (cf dirtwheels of november), the turbo and 680s had wasted their tires...who said power?

 

Scooby....can you find info. concerning nitrous on atv's? This may be what you are looking for (in a bottle).

 

I think that both Alba and trinity sell this for something around 700$ (not sure of the price). They supposedly add up to 20hp.