Bicycle Archive · Specification report

Bicycle comparison

2009 GT Stomper 20 · 2011 GT Stomper 20

Specification	2009 GT Stomper 20	2011 GT Stomper 20
Overview
Model year	2009	2011
Brand	GT	GT
Model	Stomper 20	Stomper 20
Bicycle type	Juvenile	Juvenile mountain bike, suspension
Archive ID	18789	25054
Original MSRP	$299.99	—
Colors	Red	Gloss black, ano white
Sizes	One size fits all	—
Frameset
Frame construction	TIG-welded	Aluminum
Frame material	GT 6061 Aluminum	6061 aluminum
Fork	SR Suntour M2000, 75mm travel	SR M 2000, 75mm travel
Fork material	Alloy, single crown	—
Rear shock	N/A	N/A
Drivetrain
Component group	Juvenile Mix	Mountain Mix
Shifters	SRAM MRX	Shimano Revo twist
Front derailleur	N/A	—
Rear derailleur	Shimano TX30	Shimano TX-30
Crankset	Cotterless aluminum, 36 teeth	Cotterless aluminum, 36T teeth
Bottom bracket	3-piece	3 piece square taper
Cassette	Shimano	Shimano
Rear cogs	7-speed, 14 - 28 teeth	7-speed, 14 - 28 teeth
Chain	Uniglide	Uniglide
Pedals	High Impact nylon platform	High Impact nylon platform
Brakes
Brakes	Tektro linear brakes, alloy short reach levers	Tektro linear pull brakes, alloy short reach levers
Cockpit & contact points
Headset	1 1/8" Aheadset	Aheadset
Handlebar	Riser	Alloy Riser
Handlebar extensions	Not included	Not included
Stem	Alloy	Ahead alloy ATB
Saddle	Boys Anatomic MTN	Boys Anatomic MTN
Seatpost	Alloy	Alloy
Wheels & tires
Hubs	Alloy	Alloy QR
Rims	Aluminum	ATB aluminum
Spokes	14ga. (2.0mm)	Stainless, 14ga. (2.0mm)
Spoke nipples	Brass	Brass
Front tire	20 x 1.95" Kenda ATB Dual purpose	20 x 1.95" Kenda ATB Dual purpose
Wheel size	20" wheels	20" wheels

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on November 10, 2026.