Bicycle Archive · Specification report

2004 Mongoose Expert

Velopedia Archive ID 31412

Overview

Model year	2004
Brand	Mongoose
Model	Expert
Bicycle type	BMX
Archive ID	31412
Original MSRP	$289.99
Sizes	Pro

Frameset

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

Drivetrain

Component group	N/A
Shifters	N/A
Front derailleur	N/A
Rear derailleur	N/A
Crankset	3-piece chromoly 175mm, 39 teeth
Bottom bracket	Loose ball
BB shell width	American
Rear cogs	1-speed, 14 teeth
Chain	KMC Z510 CP, 1/2 X 1/8"
Pedals	Mongoose alloy platform

Cockpit & contact points

Headset	1 1/8" threadless Tange-Seiki Fatty MX
Handlebar	Chromoly BMX
Handlebar extensions	N/A
Stem	Aluminum 4 bolt
Saddle	Mongoose Jumper
Seatpost	Pillar, steel

Wheels & tires

Hubs	Aluminum, 14mm axle
Rims	Alex MX-22, 48-hole
Front tire	Front: 20 x 2.125" Maxxis Maxx Daddy, Rear: 20 x 1.95" Maxxis Holy Roller
Wheel size	20" wheels

Geometry · Legacy reference

Top tube	520.7 mm
Head-tube angle	74°
Seat-tube angle	71°
Chainstay / rear center	373.4 mm

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on September 25, 2026.