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Here at CSR we ride everything we sell so we know it performs. The dyno graph below is our CSR signature 673 running on 93 octane pump gas. When you are on the trails, you don't want to be messing around with trying to find race gas for your quad.

 

This engine can be built for a lot less than you might expect to pay for this kind of power.
1195.00 to be exact. Price includes new 11:1 101mm piston, new stainless steel valves,
CSR's head porting, multi-angle valve job, new cam, new heavy duty valve springs, new valve stem seals,
modified valve guides and new gaskets.

 

 

 

Here is the new CSR 721

The CSR 721 is a great performing engine as you can see above.

It combines a 6 mil stroke with a 101 mil  bore, and it can use any off the shelf piston

so you are not limited to just one piston like other stroker kits.

This engine runs on premium 93 or 94 octane pump gas .

 

CSR 735

Here is an idea of what is possible with the 6mil stroker motors when the right combo is put together. This motors runs on a 50/50 mix of race and premium pump gas. I recommend the 6mil crank/rod for drag only applications.

CSR 760

Here is a big bore 4mil based motor that runs on a 50/50 mix of race/premium pump gas

 

 

 

 

 

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