A forum for owners of Yamaha TTR250 trail and enduro bikes!

I have run LECTRON CARBS on lots of bikes over the years with great success on 2 strokes.  Two years ago I decided to run their new  4 stroke carb on my WR450 that I used as a snow bike.    The ease of tuning was a plus, and the tuning changes were more visible and  felt than fooling with the stock accelerator pump Keihin which I had lavished much time on with various needles/pump improvements/ lots of jet variations.

What the Lectron proved to me was you don't need an accelerator pump on a 4 stroke engine for crisp instant throttle response.   I did not however experience the big improvement in gas mileage as per the KTM  2 strokes I run Lectrons on.   Oeverall the   ride-ability  of the Lectron was a big leg up over the stock carb.  Downsize was the $$$ spent on the carb.   When I retired the WR  as a snowbike and put it on the street for resale, the Lectron with instant throttle was a serious handful and I had to remove the Lectron to sell the bike and go back to stock easy lazy throttle so no one hurt themselves.     Upside is, one day on Ebay at $400 the LECTRON carb went down the road to a new owner.