Bicycle Archive · Specification report

2003 Redline Single X

Velopedia Archive ID 39424

Overview

Model year	2003
Brand	Redline
Model	Single X
Bicycle type	Freestyle/jumping
Archive ID	39424
Original MSRP	$199.99
Colors	Black, Red
Sizes	Pro

Frameset

Frame construction	TIG-welded
Frame material	Chromoly/hi-tensile steel
Fork	Redline Monster
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	1-piece 175mm, 44 teeth
Bottom bracket	Loose ball
Rear cogs	1-speed, 16 teeth
Chain	KMC Z410, 1/2 x 3/32"
Pedals	Redline aluminum

Brakes

Brakes	ProMax 8.0 U-brake rear brakes, Promax alloy rear levers

Cockpit & contact points

Headset	1 1/8" threadless steel threadless
Handlebar	Redline Trail bars
Handlebar extensions	Not included
Stem	Redline aluminum Proline
Saddle	Redline Monster
Seatpost	Steel micro-adjust

Wheels & tires

Hubs	Aluminum, 14mm axle
Rims	Alex X-303, 48-hole
Spokes	14ga. (2.0mm) straight gauge
Front tire	Front: 20 x 2.125" En-Duro, Rear: 20 x 1.75" En-Duro
Wheel size	20" wheels

Geometry · Legacy reference

Top tube	527 mm
Head-tube angle	73°
Seat-tube angle	70°
Chainstay / rear center	381 mm
Wheelbase	952.5 mm

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on October 2, 2026.