Bicycle Archive · Specification report

2005 Diamondback Reactor Jr.

Velopedia Archive ID 10719

Overview

Model year	2005
Brand	Diamondback
Model	Reactor Jr.
Bicycle type	BMX
Archive ID	10719

Frameset

Frame construction	TIG-welded
Frame material	6061 T6 aluminum
Fork	Reactor Jr.
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	TruVativ Racing Junior, 40 teeth
Bottom bracket	TruVativ Power Spline
Rear cogs	1-speed, 15 teeth
Chain	KMC HP20
Pedals	DB Junior aluminum

Brakes

Brakes	Tektro mini-v rear brakes, Tektro rear levers

Cockpit & contact points

Headset	1" threaded FSA
Handlebar	DB aluminum
Handlebar extensions	Not included
Stem	Aluminum
Saddle	UNI-type
Seatpost	Uni

Wheels & tires

Hubs	Sealed
Rims	Front: Alex R390, Rear: Alex R-390, 24-hole
Spokes	14ga. straight gauge
Front tire	20 x 1-3/8" Tioga Comp III
Wheel size	20" wheels

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on August 25, 2026.