Bicycle Archive · Specification report

2009 Giant STP 125

Velopedia Archive ID 16811

Overview

Model year	2009
Brand	Giant
Model	STP 125
Bicycle type	Juvenile mountain bike, suspension
Archive ID	16811
Original MSRP	$380.00
Colors	Blue

Frameset

Frame construction	TIG-welded
Frame material	ALUXX aluminum
Fork	Spinner Alloy, 2" travel
Fork material	Alloy, single crown
Rear shock	N/A

Drivetrain

Component group	Juvenile Mix
Shifters	SRAM MRX Twist
Front derailleur	N/A
Rear derailleur	Shimano Tourney
Crankset	High-Tensile Steel 3-piece w/chain guard, 36 teeth
Bottom bracket	Semi-cartridge
Cassette	Shimano HG37
Rear cogs	7-speed, 14 - 28 teeth
Chain	KMC Z51
Pedals	Resin

Brakes

Brakes	Alloy Direct Pull brakes, Alloy Jr. MTB levers

Cockpit & contact points

Headset	1 1/8"
Handlebar	Hi-Ten riser
Handlebar extensions	Not included
Stem	Alloy threadless
Saddle	Giant Dirt Jump
Seatpost	30.8mm diameter

Wheels & tires

Hubs	Nutted
Rims	Alloy, 36-hole
Spokes	UCP, 14ga. (2.0mm)
Front tire	20 x 2.125" Kenda K-Rad
Wheel size	20" wheels

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on October 1, 2026.