Bicycle Archive · Specification report

1999 Mongoose SX 4.5 (01)

Velopedia Archive ID 85476

Overview

Model year	1999
Brand	Mongoose
Model	SX 4.5 (01)
Bicycle type	Mountain bike, non-suspension
Archive ID	85476
Original MSRP	$379.99
Colors	Matte Blue
Sizes	Large, medium, small, womens 15"

Frameset

Frame construction	TIG-welded
Frame material	Aluminum
Fork	Mongoose
Fork material	Chromoly, oversize, unicrown crown
Rear shock	N/A

Drivetrain

Component group	Mountain Mix
Shifters	Torque Drive TD Pro
Front derailleur	Shimano AceraX top-swing, top-pull
Rear derailleur	Shimano Alivio
Crankset	SR XR17, 24/34/42 teeth
Rear cogs	8-speed, 11 - 28 teeth
Chain	Shimano CN-IG50, 1/2 x 3/32"
Pedals	Resin

Brakes

Brakes	Aluminum linear-pull brakes, aluminum linear-pull levers

Cockpit & contact points

Headset	1 1/8" threadless Mongoose sealed
Handlebar	Steel hi-rise
Handlebar extensions	Not included
Stem	Aluminum, adjustable
Saddle	Advent Gel Soft
Seatpost	Mongoose suspension

Wheels & tires

Hubs	Mongoose OS
Rims	Weinmann 519, 36-hole
Spokes	Stainless steel, 2.0mm straight gauge
Front tire	26 x 2.00" Kenda Krisp
Wheel size	26" wheels

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