With its CRMO frame, humongous tubes, double thick dropouts and headtube the 1999 Haro Supra SX is built to take more punishment than a first grader playin with matches. Same frame as Supra DLX. Cromoly Straightshooter fork. New cromoly 180mm Haro MegaCrank. Haro Heffer 2 rims with ground sidewalls. Haro Jackhammer cromoly bars. Haro Super Plush padded seat. Dia-Compe 99 U-Brake.
Frame & Fork
CR-MO 1pc MegaCrank Cranks
Haro Heffer 2 Alloy Rims
To use the BMX serial number finder start typing the whole serial into the search bar at the top of the page, or use the Advanced Search page. Based on your entry, a filtered list of possible bikes that match your serial year and month will appear.
Haro BMX serial numbers.
The first two characters SD is the model code. The third J is the factory code. The next character is year of production. 8 = 1998, 9 = 1999. Depending on the factory, production may have started around August 1998 through to July 1999.
After the year is month of production. A to L = January to December.
Example: SDJ8K00000
Made in Taiwan.
As a general rule, bikes made in Taiwan at this time had around a 5 month production lead timeline before they were delivered and sold in bike shops around the world. Generally around May of each year, factories would switch production to making models for the following year.
