Circle Track Thunder cam specs


 Circle Track Thunder

Gross Lift

In 475 Ex 475

Advertised Duration

IN 325 EX 325

 .050 Duration

In 250 Ex 250

RPM Range


Valve Lash Hot

IN 6 EX 8

Ultimate Wild Hi RPM camshaft great for lots of top end power at  upper end rpm ranges

Must use hi-pro springs with this cam

Great for Circle track use (gas mileage what's that?) lumpy idle not for F.I.E.

Cam performance is greatly improved with use of header and Webber carb

$299.99     COMPLETE 22R REBUILD KIT     $299.99