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Lots of mods
This mini doodle bug has been upgraded to a Supermini! Upgrades include govenor removal, 18lb springs, lash caps, two stage straight header, RLV si...

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Performance Basics
In this section we cover several modifications you can perform on your engine for little or no cost. Don't let your limited budget interf...

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49cc High Flow Air Filter
Here is our test bike.Santa Barbara, California makes an excellent location to build and test motorized bicycles due to the great beach w...

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Test New Page
The following is a brief overview of the billet rod and flat top piston installation. The rod comes with detailed instructions which includ...

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Mikuni Carburetor Tuning
There is a large amount of horsepower to be found in a properly tuned carburetor. Unfortunately, there isn't a universal setup that will ...

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Honda GX160 & GX200 Governor Removal
First remove the following: Gas tank Muffler Valve cover Spark plug Air filter box Now you need to place the engine at to...

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Billet Rod & Flat Top Piston Installation
The following is a brief overview of the billet rod and flat top piston installation. The rod comes with detailed instructions which includ...

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99cc HF Predator Modifications
Note: This is not a step by step "how-to" for building the 99cc Predator engine. By no means is this intended to be a complete set of instr...

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