Velopedia Bicycle Archive
Compare Bicycles
Compare published geometry, gearing and specifications for up to three bicycles.
Edit comparison
Add a bicycle
Search the Archive without leaving this comparison.
1 of 2 bicycles
At a glance
Key differences
Supported differences are shown below. Data limitations are labeled separately.
- Data limitation
No geometry is recorded for 2005 K2 Attack 1.0 and 2004 K2 Attack 1.0.
- Gearing
2005 K2 Attack 1.0 has a 6% lower climbing ratio than 2004 K2 Attack 1.0.
A lower ratio gives more mechanical advantage; rear-wheel rollout determines distance per crank turn.
Gearing comparison
Lower gears help on climbs. Higher gears suit higher speeds.
RPM
RPM = pedal turns per minute.
Lowest0.69:1Highest3.82:1Total range555%
Estimated speed at 90 RPMLowest gearHighest gear
Uses front tire 26×2.1; rear size isn’t listed.
Lowest0.73:1Highest3.82:1Total range521%
Estimated speed at 90 RPMLowest gearHighest gear
Uses front tire 26×1.95; 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.
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
2005 K2 Attack 1.0
2004 K2 Attack 1.0
Overview
Model Year
2005
2004
Brand
K2
K2
Model
Attack 1.0
Attack 1.0
Bicycle Type
Mountain bike, front & rear suspension
Mountain bike, front & rear suspension
Original MSRP
Not documented
$599.99
Colors
Red/Silver
Black/Blue
Sizes
S, M, L, XL
L, M, S, way big
Weight
—
—
Frameset
Frame Construction
TIG-welded
TIG-welded
Frame Material
7000 aluminum
7005 aluminum
Fork
SR Suntour XC60, 100mm travel
Rock Shox Judy C, 100mm travel
Fork Material
Aluminum, single crown
Aluminum, single crown
Rear Shock
Coil-spring, 100mm travel
Noleen Sport
Drivetrain
Component Group
Mountain Mix
Mountain Mix
Shifters
Shimano ST-EF29 EZ Fire STI
Shimano Acera EX Fire
Front Derailleur
Suntour XC-202, top-pull/clamp-on
Shimano Acera, clamp-on
Rear Derailleur
Shimano Alivio
Shimano Altus
Crankset
Suntour XCC-250, 22/32/42 teeth
Suntour XCC-150, 22/32/42 teeth
Bottom Bracket
Sealed cartridge
Cartridge
BB Shell Width
—
68mm English
Rear Cogs
8-speed, 11 - 32 teeth
8-speed, 11 - 30 teeth
Chain
KMC IG-31, 1/2 x 3/32"
KMC IG-31, 1/2 x 3/32"
Pedals
Resin MTB
Steel cage w/clips & straps
Brakes
Brakes
Tektro IO Mechanical Disc brakes, Shimano ST-EF29 front/Shimano ST-EF29 EZ Fire STI rear levers
Tektro linear-pull brakes, Shimano Acera levers
Cockpit & Contact Points
Headset
1 1/8" threadless Ritchey
1 1/8" threadless Ritchey
Handlebar
Steel, 40mm rise
Aluminum, rise
Handlebar Extensions
Not included
Not included
Stem
Aluminum threadless
Aluminum threadless
Saddle
WTB Speed V Sport
WTB SST X2
Seatpost
Aluminum micro-adjust
Aluminum micro-adjust, 27.2mm diameter
Wheels & Tires
Hubs
Aluminum, Q/R
Aluminum, Q/R
Rims
Aluminum, 32-hole
Ritchey Girder, 36-hole
Spokes
Stainless steel, 14ga. (2.0mm) straight gauge
Stainless steel, 14ga. (2.0mm) straight gauge
Front Tire
26 x 2.10" Kenda Klaw XT
26 x 1.95" IRC Multi-Terrain
Wheel Size
26" wheels
26" wheels
Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run.