Bicycle Archive · Specification report

2009 Rocky Mountain Flatline 1

Velopedia Archive ID 18845

Overview

Model year	2009
Brand	Rocky Mountain
Model	Flatline 1
Bicycle type	Mountain bike, front & rear suspension
Archive ID	18845
Colors	Black
Sizes	Xsmall, small, medium, large

Frameset

Frame construction	TIG-welded
Frame material	RMB FORM 7005 Aluminum w/hydroformed DT
Fork	RockShox Domain 302, 180mm travel
Fork material	Single
Rear shock	Fox Van R, 170 - 213mm travel

Drivetrain

Component group	SRAM X.7/mix
Shifters	SRAM SX.5 Trigger
Front derailleur	Truvativ Box Guide, chain retention device
Rear derailleur	SRAM X.7
Crankset	TruVativ Hussefelt, 36 teeth
Bottom bracket	TruVativ Howitzer
Cassette	SRAM PG-950
Rear cogs	9-speed, 11 - 32 teeth
Chain	SRAM PC-951
Pedals	RMB flat

Brakes

Brakes	Shimano M575 disc brakes, Shimano M575 Hydraulic levers

Cockpit & contact points

Headset	1 1/8" - 1 1/2" integrated FSA Orbit Z 1.5R
Handlebar	RMB Alloy DH riser
Handlebar extensions	Not included
Stem	RMB DH alloy 31.8mm
Saddle	WTB Pure V Race
Seatpost	RMB SP-601 2-bolt, 30.9mm diameter

Wheels & tires

Hubs	Front: Wheeltech cartridge disc 20mm axle, Rear: Wheeltech cartridge disc w/12mm thru-axle
Rims	Alex FR 32
Spokes	DT Swiss Champion
Front tire	Front: 26 x 2.50" WTB Prowler MX Comp, Rear: 26 x 2.50" WTB Dissent Comp
Wheel size	26" wheels

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on September 24, 2026.