ngjenwei,
hehehe, selling on my own very troublesome. Also need to do some touch up be4 i can post for sale. By the way, maybe u can pm me your mech. i've been toying this 83mm piston quite sometime.
http://img3.imagebanana.com/img/fbg7axt1/continental_tire.jpg
Tire development today has come a long way from what it once was. Tires are now available with customized tread patterns, different colors, as run-flats...