Velopedia Bicycle Archive

Compare Bicycles

Compare published geometry, gearing and specifications for up to three bicycles.

1 of 2 bicycles

At a glance

Key differences

Supported differences are shown below. Data limitations are labeled separately.

  1. Data limitation

    No geometry is recorded for 2008 Eastern Bikes Metalhead and 2006 Eastern Bikes Metalhead.

Gearing comparison

Lower gears help on climbs. Higher gears suit higher speeds.

RPM

RPM = pedal turns per minute.

2008 Eastern Bikes Metalhead25T · 9T · 1-speed
Ratio2.78:1

Speed unavailable: wheel or tire size is missing or unclear.

2006 Eastern Bikes Metalhead33T · 12T · 1-speed
Ratio2.75:1
Estimated speed at 90 RPMGear14.6 mph

Uses front tire 20×1.95; rear size isn’t listed.

How it works

Ratio = front teeth ÷ rear teeth. Hub gears also include the hub’s internal ratio. A 400% range means the highest ratio is four times the lowest.

Speeds are estimates from tire size and pedal cadence. Actual speeds vary.

Try other gearing

Complete specification tableShows different published values and gaps where a bicycle lacks data. Different wording reflects source language, not necessarily different components. Swipe for more columns.
Print / PDFCSV
Specification
2008 Eastern Bikes Metalhead
2006 Eastern Bikes Metalhead
Overview
Model Year
2008
2006
Brand
Eastern Bikes
Eastern Bikes
Model
Metalhead
Metalhead
Bicycle Type
BMX
Freestyle/jumping
Colors
Red, Black
—
Sizes
20.5" tt
—
Weight
—
—
Frameset
Frame Construction
TIG-welded
TIG-welded
Frame Material
Chromoly
Chromoly downtube
Fork
Eastern
Eastern
Fork Material
Chromoly
Chromoly, unicrown crown
Drivetrain
Component Group
BMX
—
Crankset
Eastern 3pc Raptor, 25 teeth
3-piece chromoly, 33 teeth
Bottom Bracket
Spanish
Sealed
Rear Cogs
1-speed, 9 teeth
1-speed, 12 teeth
Chain
—
KMC Z410
Pedals
Wellgo DX Style
Wellgo DX Style
Brakes
Brakes
Tektro brakes, Tektro levers
Tektro Alloy U-brake brakes, Tektro levers
Cockpit & Contact Points
Headset
Internal
1 1/8" integrated internal
Handlebar
8"
2-piece
Handlebar Extensions
Not included
—
Stem
Choker
Eastern Electron
Saddle
Pinner
Eastern
Seatpost
—
Straight post
Wheels & Tires
Hubs
Eastern LB9-II Birectional
Front: Formula aluminum 14mm axle, Rear: Eastern aluminum 14mm axle
Rims
Double Wall, 36-hole
Aluminum high-wall, 48-hole
Spokes
—
14ga. (2.0mm) straight gauge
Spoke Nipples
—
Brass nipples
Front Tire
—
20 x 1.95" Kenda Kovert
Wheel Size
—
20" wheels

Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run.

Campaign
Scroll to Top