VelopediaBicycle Archive · Specification report

1997 Diamondback Assault EX

Velopedia Archive ID 69564

Overview

Model year1997
BrandDiamondback
ModelAssault EX
Bicycle typeBMX
Archive ID69564
Original MSRP$310.00
ColorsBrushed
SizesBoys 9.5"
Weight24.5 lb

Frameset

Frame constructionTIG-welded
Frame material7005 aluminum
ForkAkisu
Fork materialChromoly, unicrown crown
Rear shockN/A

Drivetrain

Component groupN/A
ShiftersN/A
Front derailleurN/A
Rear derailleurN/A
Crankset1-piece chromoly, 44 teeth
Bottom bracketVictor VPB-35
BB shell width68mm Threadless
Rear cogs1-speed, 16 teeth
ChainKMC HP-20, 1/2 x 3/32"
PedalsWellgo LU-313

Brakes

BrakesTektro 867A brakes, Lee Chi 316A-1 levers

Cockpit & contact points

Headset1" Victor VP-H75
HandlebarHsin Lung
Handlebar extensionsN/A
StemHsin Lung
SaddleVelo VL-247
SeatpostLee Chi SP-204 aluminum, 27.0 mm diameter

Wheels & tires

HubsKing Kong 370
RimsWeinmann 4019, 36-hole
SpokesShuhn Lih steel, 2.0mm straight gauge
Spoke nipplesBrass nipples
Front tireFront: 20 x 2.125" Tioga Comp III, Rear: 20 x 1.75" Tioga Comp III
Wheel size20" wheels

Geometry · Legacy reference

Top tube533.4 mm
Head-tube angle75°
Seat-tube angle71°
Chainstay / rear center393.7 mm
Wheelbase965.2 mm
Fork offset / rake30.5 mm

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on August 24, 2026.