Velopedia Bicycle Archive
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Compare published geometry, gearing and specifications for up to three bicycles.
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1 of 2 bicycles
At a glance
Key differences
Supported differences are shown below. Data limitations are labeled separately.
- Identity & price
These bicycles are categorized differently: 2010 GT Tachyon 2.0 is Road; 2012 GT Tachyon 2.0 is Hybrid.
- Data limitation
No geometry is recorded for 2010 GT Tachyon 2.0 and 2012 GT Tachyon 2.0.
Gearing comparison
Lower gears help on climbs. Higher gears suit higher speeds.
RPM
RPM = pedal turns per minute.
Lowest1.20:1Highest4.55:1Total range379%
Estimated speed at 90 RPMLowest gearHighest gear
Uses front tire 700C×32; rear size isn’t listed.
Lowest1.20:1Highest4.55:1Total range379%
Speed unavailable: wheel or tire size is missing or unclear.
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.
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.
Specification
2010 GT Tachyon 2.0
2012 GT Tachyon 2.0
Overview
Model Year
2010
2012
Brand
GT
GT
Model
Tachyon 2.0
Tachyon 2.0
Bicycle Type
Road/sport
Hybrid/Comfort
Original MSRP
$899.99
Not documented
Colors
Blue, White
White
Sizes
XXS, XS, X, M, L, XL, XXL
S, M, L, XL
Weight
—
—
Frameset
Frame Construction
TIG-welded
—
Frame Material
Aluminum w/ hydroformed TT and DT
Hydroformed Butted 6061 Al
Fork
GT Tachyon rigid w/ hydroformed alloy legs
GT Type R w/ FOC Carbon
Fork Material
Alloy
—
Drivetrain
Component Group
Flat Bar Road Mix
—
Shifters
Shimano SL-R441
Shimano R440 9spd trigger
Front Derailleur
Shimano R453, clamp on
Shimano R-453
Rear Derailleur
Shimano Sora R-3400
Shimano Sora 9spd
Crankset
FSA Omega Triple, 30/39/50 teeth
FSA Omega 50/39/30t
Bottom Bracket
FSA Mega EXO
Shimano
Cassette
Shimano HG50
Shimano HG-51 9spd 11-25t
Rear Cogs
9-speed, 11 - 25 teeth
—
Chain
KMC HG40
KMC HG-53
Pedals
Alloy body, steel cage trekking
GT Trekking
Brakes
Brakes
Tektro RX 1.0 brakes, Tektro RX-1 levers
Tektro RX 1.0
Cockpit & Contact Points
Headset
1 1/8" integrated Sealed Bearing
Fsa
Handlebar
Ritchey OE Flatbar 31.8 clamp
GT Type R Flat-Riser
Handlebar Extensions
Not included
—
Stem
NVO adjustable
GT 3D Forged 6061
Saddle
WTB Devo Comp
GTw Bio-Morphic
Seatpost
GT Design Alloy
GT 2 bolt Alloy Road
Wheels & Tires
Hubs
Front: Alloy With Quick Release, Rear: Shimano Tiagra R440
Formula Sealed Formula Sealed
Rims
Alex DA22, 32-hole
—
Spokes
Stainless, 14ga. (2.0mm)
—
Spoke Nipples
Chrome Plated Brass
—
Front Tire
700 x 32c Kenda Kiniption
Kenda Kwest 700x32
Wheel Size
700c wheels
—
Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run.