RUNFAST TM 2-STROKE 2-STROKE MOTORIZED BIKE YD-100 ENGINE ONLY WITH FIREMAXX PIPE

A MEGAPOWERED RUNFAST TM 2-STROKE 2-STROKE MOTORIZED BIKE YD-100 ENGINE ONLY WITH FIREMAXX POWER PIPE for UPGRADING  your bike ENGINE  INTO A SUPER MOTORIZED BIKE!   WHAT YOU RECEIVE: 1 RUNFAST YD-100 MOTORIZED BIKE ENGINE  1 FIREMAXX SUPER POWER PIPE   Note:  this is the upgraded engine and pipe only.  Other motorized bike parts not included and sold separately.   WHY RUNFAST IS THE HIGHEST QUALITY MOTORIZED BIKE ENGINE IN THE WORLD?Heavier, stronger magnet rotor for more power! Other cheap bike engines use weaker, less powerful magnet rotors. Feel the difference! Heavier, thicker cylinder bodies and crank case for strength and durability!Heavy duty metal engine casing for added strength and durabilityWider front mount for better bike fitting accommodations of all bikes Front and rear mounting studs are rugged thick 8mm. Cheap low quality kits use thin, brittle studs that break off.High grade 8.8 standard for all bolting hardware. The low quality cheap kits use 4.4 grade that strip th