GY6 150cc Engine Assembly - Automatic w/ Reverse for ATV This is the OEM engine for the Tao Tao ATA150G and BULL 150 atv.  If you are trying to install the engine in an atv that is not one of those two units, please note:  If you are going to return the engine, it must be in new, unused condition, you are responsible for the return freight and there is a 20% restocking fee.  Engine specs: 149cc 4-stroke 1-cylinder EPA certified Electric start Starter is mounted just behind front mounts Air cooled Automatic with reverse Three position shifter: F-N-R 11 3/8" between front and rear mounting holes Does NOT include front sprocket 100814 Engines can only be shipped standard shipping and only to the lower 48 states.  Returned engines are subject to a 20% restocking fee and must be in new, saleable, un-installed condition and returned in the original packaging.  Engines come with a 30 day warranty, but only if installed by a certified small engine repair facility.  In addition, oil and filter must be changed every 200 miles for the first two oil changes.  The engines are shipped with lubricant that is not recommended for actual use.  You must drain that oil out and replace with a good non-synthetic motorcycle oil.       Shipping details: Do you need your engine fast?  If you order before 3:00 pm CST, Monday thru Friday, your order goes out the same day.   Buy now!