Bicycle Archive · Specification report

2009 Jamis X-20

Velopedia Archive ID 17942

Overview

Model year	2009
Brand	Jamis
Model	X-20
Bicycle type	Juvenile mountain bike, suspension
Archive ID	17942
Original MSRP	$310.00
Colors	Ghost Blue/Pearl White, Team Red/Pearl White
Weight	25 lb

Frameset

Frame construction	TIG-welded
Frame material	7005 aluminum
Fork	Suspension, 40mm travel
Fork material	Single
Rear shock	N/A

Drivetrain

Component group	Mountain Mix
Shifters	SRAM MRX Grip Shift
Front derailleur	N/A
Rear derailleur	Shimano TX30
Crankset	Forged Alloy, 36 teeth
Bottom bracket	Cotterless, 119mm spindle
BB shell width	68mm
Rear cogs	6-speed, 14 - 28 teeth
Chain	KMC HP20
Pedals	ATB Resin body

Brakes

Brakes	Alloy Linear Pull brakes, alloy short reach levers

Cockpit & contact points

Headset	1 1/8" Aheadset
Handlebar	ATB Alloy riser
Handlebar extensions	Not included
Stem	Jamis
Saddle	XC ATB
Seatpost	Alloy Pillar, 27.2mm diameter

Wheels & tires

Hubs	Heavy Duty nutted axle
Rims	Alloy, 36-hole
Spokes	Nickel-plated, 14ga. (2.0mm)
Front tire	20 X 1.95" CST ATB
Wheel size	20" wheels

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on September 26, 2026.