Bicycle Archive · Specification report

2002 Marin MBX 125

Velopedia Archive ID 37738

Overview

Model year	2002
Brand	Marin
Model	MBX 125
Bicycle type	BMX
Archive ID	37738
Original MSRP	$259.99
Colors	Blue
Sizes	Junior

Frameset

Frame construction	TIG-welded
Frame material	4130 chromoly
Fork material	4130 chromoly, unicrown crown
Rear shock	N/A

Drivetrain

Component group	N/A
Shifters	N/A
Front derailleur	N/A
Rear derailleur	N/A
Crankset	1-piece chromoly 175mm, 44 teeth
Bottom bracket	Loose ball
BB shell width	American
Rear cogs	1-speed, 16 teeth
Chain	KMC, 1/2 x 3/32"
Pedals	Platform

Brakes

Brakes	ProMax linear-pull rear brakes, Unspecified front/ProMax linear-pull rear levers

Cockpit & contact points

Headset	1 1/8" threadless Tange Aheadset
Handlebar	Chromoly BMX
Handlebar extensions	Not included
Stem	Aluminum, forged
Saddle	BMX
Seatpost	Aluminum micro-adjust, 26.0mm diameter

Wheels & tires

Hubs	Aluminum
Rims	Alex aluminum, 36-hole
Spokes	Stainless steel, 14ga. (2.0mm) straight gauge
Front tire	20 x 2.125" knobby
Wheel size	20" wheels

Geometry · Legacy reference

Top tube	457.2 mm
Head-tube angle	72.5°
Seat-tube angle	68.5°
Chainstay / rear center	388.6 mm

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