Bicycle Archive · Specification report

1999 Diamondback Impression

Velopedia Archive ID 88235

Overview

Model year	1999
Brand	Diamondback
Model	Impression
Bicycle type	Juvenile
Archive ID	88235
Original MSRP	$149.99
Colors	Pink, Wildberry
Sizes	Girls 9.5"
Weight	24.3 lb

Frameset

Frame construction	TIG-welded
Frame material	Hi-tensile steel
Fork	Diamondback
Fork material	Hi-tensile steel, unicrown crown
Rear shock	N/A

Drivetrain

Component group	N/A
Shifters	N/A
Front derailleur	N/A
Rear derailleur	N/A
Crankset	1-piece 5 1/2", 36 teeth
Bottom bracket	YST BB 621
BB shell width	68mm Threadless
Rear cogs	1-speed, 16 teeth
Chain	Taya 410, 1/2 x 1/8"
Pedals	Resin

Brakes

Brakes	Lee Chi 890/coaster brake rear brakes, Lee Chi 124A rear levers

Cockpit & contact points

Headset	1" YST steel
Handlebar	Diamondback steel
Handlebar extensions	N/A
Stem	Diamondback steel
Saddle	Diamondback Junior
Seatpost	Pillar, steel, 22.2mm (7/8 inch) diameter

Wheels & tires

Hubs	Front: King Kong 337BF, Rear: Kung Ten coaster
Rims	Kin Lin RT-6n, 36-hole
Spokes	Shuhn Lih steel, 2.0mm straight gauge
Spoke nipples	Brass nipples
Front tire	20 x 1.75" Diamondback
Wheel size	20" wheels

Geometry · Legacy reference

Top tube	444.5 mm
Head-tube angle	72°
Seat-tube angle	70°
Chainstay / rear center	381 mm
Wheelbase	863.6 mm
Fork offset / rake	30 mm

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on September 27, 2026.