Tired of slow starts? This is the cure. This Plug and play system operates in 12v until the start button is pressed then switches to 24v only for the starter doubling the starter rotating speed making for almost instant starts. when the motor is running both batteries are charging like normal making this a zero maintenance system also. zero cutting and splicing no need for anything other then a minor trimming inside the factory battery box for the batteries to fit.  Just unplug you starter solenoid and remove the oem battery and battery cables, plug in the supplied harness, solenoid mount and batteries and you are good to go. be careful when hooking the battery cables up as those batteries are putting out power. 

we have been testing these systems for 2 years racing xc with 3 different machines and have had fantastic results with no operational issues.

Kit Includes

1x 24v sub harness

2x solenoids

1x solenoid mount

all battery cables, even to the starter.

DOES NOT INCLUDED

2x YTZ7S batteries (same battery as a 2009-2025 yfz450r)

things to keep in mind, when you are using a battery charger like a trickle charger or a boost box, connect to only one battery at a time, do not cross from one battery to the other. if you do and hit the start button it will fry the system by connecting the batteries in 12v parallel and 24v series at the same time.

we do not recommend using a boost box or charger of any kind during start up.

these parts are electrical and water proof but use your best common sense and caution during installation or charging to prevent harm to you or the machine.