Bicycle Archive · Specification report

1998 Univega Jammer

Velopedia Archive ID 71606

Overview

Model year	1998
Brand	Univega
Model	Jammer
Bicycle type	Juvenile
Archive ID	71606
Original MSRP	$199.00
Colors	Freckle Black, Sapphire Blue
Sizes	Boys 11", girls 11"
Weight	29 lb

Frameset

Frame construction	TIG-welded
Frame material	Hi-tensile steel
Fork	Univega Jr. ATB
Fork material	Hi-tensile steel, unicrown crown
Rear shock	N/A

Drivetrain

Component group	Shimano Tourney
Shifters	Grip Shift MRX-170 rear
Front derailleur	N/A
Rear derailleur	Shimano Tourney TY-22
Crankset	1-piece 5 1/2", 40 teeth
Bottom bracket	One piece
BB shell width	American 24tpi
Rear cogs	6-speed, 14 - 28 teeth
Chain	KMC UG-50, 1/2 x 3/32"
Pedals	Resin

Brakes

Brakes	Aluminum cantilever brakes, resin/aluminum levers

Cockpit & contact points

Headset	1" steel
Handlebar	Steel
Handlebar extensions	Not included
Stem	Steel
Saddle	Padded vinyl
Seatpost	Pillar, steel, 25.4mm diameter

Wheels & tires

Hubs	Steel, nutted
Rims	Weinmann 519, 36-hole
Spokes	Chung Nan steel, 2.0mm straight gauge
Spoke nipples	Brass nipples
Front tire	20 x 2.00" multi-terrain
Wheel size	20" wheels

Geometry · Legacy reference

Top tube	425.4 mm
Head-tube angle	70°
Seat-tube angle	72°
Wheelbase	893.1 mm
Fork offset / rake	50 mm

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on October 6, 2026.