Bicycle Archive · Specification report

1998 Lodestar Obsession

Velopedia Archive ID 71428

Overview

Model year	1998
Brand	Lodestar
Model	Obsession
Bicycle type	Mountain bike, non-suspension
Archive ID	71428
Original MSRP	$849.00
Colors	2H Graphite, Red Hot Red
Sizes	Large, medium, small, xsmall

Frameset

Frame construction	TIG-welded
Frame material	Prolite extruded magnesium
Fork	Lodestar
Fork material	Chromoly, unicrown crown
Rear shock	N/A

Drivetrain

Component group	Mountain Mix
Shifters	Grip Shift ESP 5.0
Front derailleur	Shimano STX top-swing, top-pull/bottom bracket mount
Rear derailleur	Grip Shift ESP 5.0
Crankset	Sugino Impel 250, 24/34/42 teeth
Bottom bracket	Sealed cartridge, 113mm spindle
BB shell width	73mm English
Rear cogs	7-speed, 11 - 28 teeth
Chain	Sachs PC-51, 1/2 x 3/32"
Pedals	Wellgo LU-964

Brakes

Brakes	Tektro 821A linear-pull brakes, Tektro RBP-376A levers

Cockpit & contact points

Headset	1 1/8" threadless Aheadset SAS
Handlebar	JD Comp JD-810
Handlebar extensions	Lee Chi alloy
Stem	JD Comp JD-347
Saddle	Selle Royal Eclipse
Seatpost	JD Comp JD-430, 28.6mm diameter

Wheels & tires

Hubs	Shimano Alivio
Rims	Mavic 221, 32-hole
Spokes	DT stainless steel, 2.0mm straight gauge
Spoke nipples	Brass nipples
Front tire	26 x 1.90" Impac IS Desert King
Wheel size	26" wheels

Geometry · Legacy reference

Top tube	565 mm
Head-tube angle	71°
Seat-tube angle	73°
Chainstay / rear center	425 mm
Wheelbase	1063 mm
Fork offset / rake	40 mm

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on October 19, 2026.