Domed Pistons

  • ON SALE
  • Regular price $99.95


Building a higher horsepower Animal just got a whole lot easier! 

Now the average guy can build a higher horsepower Animal without having to have someone else do any expensive machine work. These 3 ring domed pistons are a direct drop in for the stock bore Animal or LO 206 block. This is something that was not available before.
In the past, the stock block needed to be honed or bored approximately .012" larger to fit an aftermarket piston. Then the pistons also needed about .100" machined off their top to get the correct pop up. The average guy does not have a rigid hone, a milling machine or a lathe to do any of this machine work. You would have to have someone do this for you. NOT ANYMORE!

After having this EXPENSIVE machine work done you finally have a piston that will fit the block. The next thing you needed to do was have someone machine the cylinder head gasket surface down about .070" to get the compression up to typical racing engine level. THAT WAS EXPENSIVE!  Machining that much off the head weakens it and makes it more susceptible to warping and blowing head gaskets.
With these pistons:
You don't have to bore the block!
You don't have to machine the top of the piston!
You don't have to machine the head gasket surface!
These domed pistons eliminate having to do all this time consuming and EXPENSIVE machine work!

It is also lighter than the stock piston. Just drop the piston in and you are ready to assemble the rest of the motor..

* Domed Piston installed in a stock bore. No machine work was required. It has the proper skirt clearance and pop up.

Currently available in the following sizes:
Standard bore
.005" oversize 
.010" oversize 
.020" oversize 

SPECS and INFO:
Domed 10.5:1 Animal Piston without milling the head.
100% CNC Machined Billet Piston
Made from Premium USA Mill Material
Designed specifically for the 206 and Animal
Barrel Shaped Skirt Designed
Lighter than a stock piston
Use with Std Rod and Stroke Configuration
They have been endurance Tested Under Extreme Conditions and performed flawlessly.
Uses the stock wrist pin .625" diameter
Use of an aftermarket or World Formula Billet connecting rod is HIGHLY recommended.
Uses the standard Briggs rings (Not included)
Uses the stock wrist pin (Not included)
* DOES NOT WORK IN THE WORLD FORMULA WITHOUT ADDITIONAL MACHINE WORK
For the .005, and the .015 pistons you must use the next size larger rings and file the end gaps to get .004" ring end gap for the top ring and .015" end gap for the 2nd ring and the oil ring.
I would also suggest using a bench grinder to remove the very last 1/2 coil of the oil ring expander for the .005" and .015" application.