- Frame
- Alloy
- Groupset
- Shimano Alivio
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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.
- Data limitation
No geometry is recorded for 2011 Breezer Thunder.
- Gearing
2011 Breezer Thunder has a 18% lower climbing ratio than 1998 Breezer Thunder.
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.
Lowest0.65:1Highest4.00:1Total range618%
Estimated speed at 90 RPMLowest gearHighest gear
Rear tire: 26×2.1.
Lowest0.79:1Highest3.82:1Total range486%
Estimated speed at 90 RPMLowest gearHighest gear
Rear tire: 26×2.1.
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
2011 Breezer Thunder
1998 Breezer Thunder
Overview
Model Year
2011
1998
Brand
Breezer
Breezer
Model
Thunder
Thunder
Bicycle Type
Mountain bike, front suspension
Mountain bike, front suspension
Original MSRP
Not documented
$1,195.00
Colors
Red/White
Cobalt blue w/ivory spears
Sizes
XS, S, M, L, XL
15", 17", 18.5", 19.5", 21"
Weight
30.3 lb
25.5 lb
Frameset
Frame Construction
TIG-welded
TIG-welded
Frame Material
Alloy
Breezer D'Fusion 7005 aluminum, double-butted
Fork
SRAM Dart 1 coil, 100mm travel
Rock Shox Indy XC
Fork Material
Single
Aluminum/magnesium, triple-clamp crown
Drivetrain
Component Group
Shimano Alivio
Mountain Mix
Shifters
Shimano Alivio
Shimano STX-RC RapidFire SL
Front Derailleur
Shimano Alivio, 34.9mm bottom swing top pull
Shimano STX top-swing, bottom-pull
Rear Derailleur
Shimano Alivio
Shimano Deore XT SGS
Crankset
Shimano M430, 22/32/44 teeth
Sugino Impel 500, 22/32/42 teeth
Bottom Bracket
Shimano External
Shimano BB-LP26, 110mm spindle
BB Shell Width
—
68mm English
Cassette
Shimano HG30
—
Rear Cogs
9-speed, 11 - 34 teeth
8-speed, 11 - 28 teeth
Chain
Shimano HG53
Shimano CN-IG51, 1/2 x 3/32"
Pedals
Not included
Victor VP-180 w/clips & straps
Brakes
Brakes
Tektro Novela brakes, Tektro ML520 levers
Lee Chi ProMax brakes, Lee Chi ProMax levers
Cockpit & Contact Points
Headset
1 1/8" threadless VP
1 1/8" threadless Aheadset STE
Handlebar
Oval M-200 alloy riser
Hsin Lung MTB 110
Handlebar Extensions
Not included
Hsin Lung MT-52A
Stem
Oval M-200 alloy
Ritchey CompLite
Saddle
Velo VL-2071 w/steel rails
Ritchey Vector
Seatpost
Oval M-200 TBT MTB, 27.2mm diameter
Kalloy SP-263, 27.2mm diameter
Wheels & Tires
Hubs
Breezer MTB alloy
Front: Formula CO32-F, Rear: Formula CO32-8
Rims
Alex ID19, 32-hole
Front: Ritchey Rock SCX, Rear: Ritchey Rock OCR, 32-hole
Spokes
—
Asahi stainless steel, 2.0mm double-butted
Spoke Nipples
—
Brass nipples
Front Tire
26 x 2.1" Kenda K837
26 x 2.10" Ritchey Mega-Bite Z-Max SC
Rear Tire
26 x 2.1" Kenda K848
26 x 2.10" Ritchey Mega-Bite Z-Max
Wheel Size
26" wheels
26" wheels
Geometry · choose a size for each bicycle
Geometry size
—
Head-tube angle
—
71°
Seat-tube angle
—
73°
Chainstay / rear center
—
421.6 mm
Wheelbase
—
1049 mm
Fork offset / rake
—
40.6 mm
Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run. Legacy reference geometry is model-level historical data whose corresponding frame size is not identified; compare those dimensions as reference values rather than size-normalized fit data.