The 1998 Diamond Back Joker BMX features a freestyle-designed frame built from oversized hi-ten tubing with double-thick dropouts for added durability, paired with a matching hi-ten freestyle fork using 1-1/4” blades and reinforced dropouts. It comes fitted with DB steel handlebars offering an 8.5” rise in chrome, held by an alloy four-bolt stem. Braking is handled front and rear by Dia-Compe Bull Dog brakes with alloy levers, while the drivetrain uses a DB forged 175mm crank in chrome with a DB 44-tooth chainwheel, matched to DB resin platform pedals with 1/2” axles. The wheelset consists of DB alloy 20x1.75” 48-hole rims, heavy-duty steel hubs, and 14-gauge spokes, wrapped in DB freestyle 20x2.125” tyres. Comfort is provided by a DB freestyle seat with 9mm rails and a steel layback seatpost (25.4mm), with an SST Ory 1” rotor included for bar spins. Finish options were full chrome, or flat grey with a chrome fork.
Frame & Fork
1pc Cranks
Alloy Rims
To use the BMX SerialFinder 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.
Diamond Back BMX serial numbers.
The first three characters ACS is the factory code.
After the above factory code, the next character is year of production. 7 = 1997, 8 = 1998. Production would have most likely started around May 1997 through to April 1998.
After the year is month of production. A = January, B = Febuary, C = March, D = April, E = May, F = June, G = July, H= August, I = September, J = October, K = November, L = December
Example: ACS7F00000
Made in Taiwan.
As a general rule, bikes made in Taiwan had around a 8 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.
