6 Sigma Racing

2002 Harley Sportster - Screaming Eagle 11 slip-ons, Super E carb, and 6 Sigma Jet Kit. Thanks for letting us set you up, Mike Pyles!!

We love this project from Here is what he told us about this build:
I bought this as a mostly original 1978 Yamaha XS400, with a seized motor. I picked it up for $100. I rebuilt the motor, built my custom frame into a drop seat bobber, and all the other mods for under $1000.
The front wheel consists of a ‘79 Honda XL500 23” rim, with custom spokes mounted to a XS650 hub. I painted both the front and rear wheels. I fabbed forward controls, and changed the clutch from hand/cable operated, to foot/linkage operated. I salvaged one of the original pistons as the hand shifter. I made my own chain tensioner and seat as well. The whip light was added for safety because the bike total height of the bike is 36” tall, with a seat height of 17”. I stripped the tank to bare metal, and painted the center stripe and skulls, then clear coated the whole thing. I ditched the original wiring harness and made my own. Basically, my goal was to do absolutely everything on the bike myself.

The bike was built in my driveway, using hand tools.

Oh yeah, this is my first bike build.

Thanks Gavin Foster for trusting us with your jetting. We can't wait to hear how the project goes.

We received the chance to put our Engineering Skills to the test on a very rare 1917 Cleveland Vintage. Happy to report we were successful on our attempt to design the Jet Kit correctly with the modern carburetor.