Bicycle Archive · Specification report

1999 Scorpio At-J20

Velopedia Archive ID 81122

Overview

Model year	1999
Brand	Scorpio
Model	AT-J20
Bicycle type	Juvenile mountain bike, non-suspension
Archive ID	81122
Original MSRP	$139.99
Colors	Honey Dew, Monarch Blue
Sizes	Boys 9.5", girls 9.5"
Weight	27 lb

Frameset

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

Drivetrain

Component group	Juvenile Mix
Shifters	Grip Shift MRX-170 rear
Front derailleur	N/A
Rear derailleur	Shimano Tourney TY-22
Crankset	1-piece 5 1/2", 44 teeth
Bottom bracket	One piece
BB shell width	American
Rear cogs	7-speed, 13 - 28 teeth
Chain	KMC Z-51, 1/2 x 3/32"
Pedals	Victor resin

Brakes

Brakes	APSE cantilever brakes, APSE 303AP levers

Cockpit & contact points

Headset	1" YST steel
Handlebar	Hsin Lung steel
Handlebar extensions	Not included
Stem	Hsin Lung steel
Saddle	Pilot
Seatpost	Steel, 25.4mm diameter

Wheels & tires

Hubs	Joy Tech steel, nutted
Rims	Weinmann 119, 36-hole
Spokes	Shuhn Lih steel, 2.0mm straight gauge
Spoke nipples	Brass nipples
Front tire	20 x 2.10" Kenda K-850
Wheel size	20" wheels

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