LiveFast has some....http://www.livefastmotors.com/accessories.html...$15.00
Sorry my link's just are not working...I have no ideal what's goin on..let me try again...
Live Fast Motors: Bike Motors, Bike Motor Accessories, Bike Motor Kits, Instructions for Assembling Bicycle Motors
Well at least the home page work's
...look under "Parts and Accessories"