Bicycle Archive · Specification report

1998 AMP Research B5 F4BLT (03)

Velopedia Archive ID 70653

Overview

Model year	1998
Brand	AMP Research
Model	B5 F4BLT (03)
Bicycle type	Mountain bike, front & rear suspension
Archive ID	70653
Original MSRP	$1,900.00
Colors	Ball-Burnished, Solar Yellow
Sizes	Large, medium, small

Frameset

Frame construction	TIG-welded
Frame material	Alcoa Alcalyte 6013 T6 aluminum
Fork	AMP Research F4BLT
Fork material	Alcoa Alcalyte 6013 T6 aluminum, linkage crown
Rear shock	AMP Research, 5.0" travel

Drivetrain

Component group	Shimano STX
Shifters	Shimano STX RapidFire SL
Front derailleur	Shimano STX top-swing, top-pull
Rear derailleur	Shimano STX
Crankset	Shimano STX, 22/32/42 teeth
Bottom bracket	Shimano BB-LP26
Rear cogs	8-speed, 11 - 28 teeth
Chain	Shimano CN-IG51, 1/2 x 3/32"
Pedals	Not included

Brakes

Brakes	Shimano STX cantilever brakes, Shimano STX levers

Cockpit & contact points

Headset	1 1/8" threadless Aheadset
Handlebar	Control Tech aluminum
Handlebar extensions	Not included
Stem	Control Tech
Saddle	Vetta TT
Seatpost	Control Tech or Thomson, 31.6mm diameter

Wheels & tires

Hubs	Shimano STX
Rims	Mavic 238
Front tire	Buyer's choice
Wheel size	Buyer's choice wheels

Geometry · Legacy reference

Top tube	574 mm
Head-tube angle	71°
Seat-tube angle	73°
Chainstay / rear center	426.7 mm
Wheelbase	1066.8 mm

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on September 22, 2026.