I have an 05 KX250F roller set up for the K5. Airbox, motor mounts, pipe. Everything you need just bolt in your K5 motor and carb, bolt on the cdi box and go. It is a very good conversion. Rode it today and the engine broke the left center case. Not sure if a snap ring let loose or what. I will even sell it with the motor if someone wants it. $ 2,500.00 without the motor