Bicycle Archive · Specification report

2001 Diamondback RM20

Velopedia Archive ID 36052

Overview

Model year	2001
Brand	Diamondback
Model	RM20
Bicycle type	BMX
Archive ID	36052
Original MSRP	$549.99
Colors	Team Scheme
Sizes	Pro XL

Frameset

Frame construction	TIG-welded
Frame material	7005 aluminum
Fork	Diamondback RMX
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	3-piece chromoly 180mm, 44 teeth
Bottom bracket	Sealed cartridge
Rear cogs	1-speed, 16 teeth
Chain	KMC HP-20, 1/2 x 3/32"
Pedals	Aluminum platform

Brakes

Brakes	Tektro BX-20 linear-pull rear brakes, Tektro 311A rear levers

Cockpit & contact points

Headset	1 1/8" threadless Cane Creek SX-1
Handlebar	Chromoly BMX
Handlebar extensions	Not included
Stem	Aluminum
Saddle	RMX padded
Seatpost	Aluminum micro-adjust, 27.0mm diameter

Wheels & tires

Hubs	RMX aluminum sealed bearing
Rims	Alex AL-DM24, 36-hole
Front tire	Front: 20 x 2.125" Tioga Comp III, Rear: 20 x 1.75" Tioga Comp III
Wheel size	20" wheels

Geometry · Legacy reference

Top tube	539.8 mm
Head-tube angle	73.5°
Seat-tube angle	71°
Chainstay / rear center	393.7 mm

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on September 27, 2026.