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.
- Data limitation
No geometry is recorded for 2005 Marin Bolinas Ridge and 2004 Marin Bolinas Ridge.
- Gearing
2005 Marin Bolinas Ridge has a 13% lower climbing ratio than 2004 Marin Bolinas Ridge.
A lower ratio gives more mechanical advantage; rear-wheel rollout determines distance per crank turn.
- Equipment
2005 Marin Bolinas Ridge has 10 mm more front travel than 2004 Marin Bolinas Ridge in the selected sizes.
Front travel is fork suspension stroke, not rear-wheel travel.
Gearing comparison
Lower gears help on climbs. Higher gears suit higher speeds.
RPM
RPM = pedal turns per minute.
Lowest0.75:1Highest3.82:1Total range509%
Estimated speed at 90 RPMLowest gearHighest gear
Uses front tire 26×1.95; rear size isn’t listed.
Lowest0.86:1Highest3.82:1Total range445%
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 Marin Bolinas Ridge
2004 Marin Bolinas Ridge
Overview
Model Year
2005
2004
Brand
Marin
Marin
Model
Bolinas Ridge
Bolinas Ridge
Bicycle Type
Mountain bike, front suspension
Mountain bike, front suspension
Original MSRP
Not documented
$299.99
Colors
Brushed Polish Matte Silver
Brushed
Sizes
13", 15", 17", 18.5", 20"
13", 15", 17", 18.5", womens 15"
Weight
—
—
Frameset
Frame Construction
TIG-welded
TIG-welded
Frame Material
7000 aluminum
7005 aluminum
Fork
Spinner Grind AC 323, 80mm travel
In-Sync Grind 323, 70mm travel
Fork Material
Aluminum, single crown
—
Drivetrain
Component Group
Mountain Mix
Mountain Mix
Shifters
Shimano Altus
Shimano Acera
Front Derailleur
Shimano FD-C050
Shimano T-300
Rear Derailleur
Shimano Acera
Shimano Acera
Crankset
TruVativ X-Flow, 24/34/42 teeth
TruVativ X-Flow, 24/34/42 teeth
Bottom Bracket
TruVativ cartridge
TruVativ cartridge
Rear Cogs
8-speed, 11 - 32 teeth
8-speed, 11 - 28 teeth
Chain
Shimano CN-IG31, 1/2 x 3/32"
Shimano IG-31
Pedals
Composite body
Resin
Brakes
Brakes
Aluminum linear-pull brakes, Shimano Altus levers
Aluminum linear-pull brakes, Shimano Acera levers
Cockpit & Contact Points
Headset
1 1/8" threadless Ritchey LB 1
1 1/8" threadless WTB Momentum ST
Handlebar
Aluminum, 1" rise
Double butted alloy, 1" rise
Handlebar Extensions
Not included
Not included
Stem
Aluminum
Forged alloy 25 Rise
Saddle
Comfort
WTB Speed V
Seatpost
Aluminum micro-adjust, 27.2mm diameter
Aluminum micro-adjust
Wheels & Tires
Hubs
Aluminum, Q/R
Aluminum, Q/R
Rims
Aluminum, 36-hole
Aluminum, 36-hole
Spokes
Stainless steel, 15ga. (1.8mm) straight gauge
Stainless steel, 15ga. (1.8mm) straight gauge
Spoke Nipples
Brass nipples
—
Front Tire
26 x 1.95" Kenda Koyote
26 x 1.95" Kenda Koyote
Wheel Size
26" wheels
26" wheels
Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run.