98", bored OEM cylinders, 6cc domed CP pistons, HD Street Performance (Dorfman) heads, Cyclerama 595 cams, Kury 58mm T/B, Bassani Pro Stree exhaust. TTS tuned by Nick at Shamrock Cycles in Round Rock, Texas. This little motor hits hard on the street with a very "rideable" curve. Tune is spot on; I can roll on throttle in sixth at 50mph with no hesitation, stalling, or ping in south Texas 100* heat. Not something I make a practice of doing but this little motor will do it.