Norco Koshka

2010 MountainCross-country

Last known price: $476

Prices shown first for United States
Fork travel: 100 mm
Wheels: 26″
Drivetrain: 3 × 8 24–42t / 11–32t
Gear range: 509%
Weight: 14.1 kg 31.1 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Mechanical disc

Rider height by size (cm)

Size guide

XS 151–164
SM 159–170
MD 165–177
LG 171–184

Components

13 of 23 identified

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Frame and fork

1 part

Frame

WSD 7005 alloy Not identified

Suspension

2 parts

Fork
- SR Suntour
XCM-V2
Rear shock

None

Drivetrain

8 parts

Bottom bracket

Cartridge Not identified
Cassette
- Shimano CS-HG30 11–32t
CS-HG30
Chain
- KMC
Z-72
Chain tensioner

None
Crankset
- Shimano FC-M151 42/34/24t
FC-M151
Front derailleur
- Shimano FD-M190
FD-M190
Rear derailleur
- SRAM X4 7 speeds
Shifters
- SRAM X4 Trigger 3 speeds

Brakes

2 parts

Brake levers

WSD alloy lever Not identified
Brakes
- Tektro

Wheels and tires

5 parts

Front hub
- Formula
Rear hub
- Formula
Rims

Double wall alloy black 32hole Not identified
Spokes

Stainless w/brass nipples Not identified
Tires
- Innova

Cockpit and contact points

7 parts

Grips
- Norco
Handlebar

Steel black 30mm riser Not identified
Headset

Steel black w/water proof seal Not identified
Pedals

Resin body w/black steel cage Not identified
Saddle
- Selle Italia Performance
Seatpost

Alloy black Not identified
Stem

Alloy black 15degree rise Not identified

Sizes and geometry

4 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size SM

Table

Geometry diagram unavailable

The drawing needs reach and stack, which the manufacturer did not publish. Available facts remain in the table.

Size Reported by the manufacturer

Complete manufacturer geometry table 4 published sizes

Complete manufacturer geometry by size
Measurement
Top tube lengthmm	530	545	560	575
Seat tube lengthmm	318	381	432	470
Head tube lengthmm	110	110	120	120
Head tube angle	70°	70.5°	70.5°	70.5°
Seat tube angle	74°	73.5°	73.5°	73.5°
Chainstay lengthmm	425	425	425	425
Wheelbasemm	1032	1036	1052	1067
Front centermm	609	614	629	644
Bottom bracket dropmm	43	43	43	43
Bottom bracket heightmm	300	300	300	300
Standover heightmm	699	712	733	747

Not published by the manufacturer: Reach, Stack, Fork rake, Trail, Stack/reach ratio, Front travel, Rear travel, Crank length, Handlebar width, Stem length, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum
Bicycle weight: 14.1 kg

31.1 lb

Suspension

Suspension configuration: Hardtail
Front travel: 100 mm

Drivetrain

Derived by Bikelake

Front chainrings: 3
Smallest chainring: 24
Largest chainring: 42
Rear sprockets: 8
Smallest sprocket: 11
Largest sprocket: 32
Lowest gear: 19.5 in
Highest gear: 99.3 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Mechanical disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Fork spring: Coil
Tire width: 2.1″
Wheel material: Aluminum
Wheel size: 26″

Technical analysis

2 measures

How these figures sit among bicycles of the same class and model year. Context, not a ranking.

Lowest gear

19.5 gear inches

This value is above the central range for this class.

Cohort: Mountain / Cross-country Model year: 2010
Sample: 186 bicycles with this information
Coverage: 75.6% of the class

Highest gear

99.3 gear inches

This value is within the central range for this class.

Cohort: Mountain / Cross-country Model year: 2010
Sample: 186 bicycles with this information
Coverage: 75.6% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 7.5 km/h
Highest gear: 38.0 km/h

Total gear range 509%

Technical details and class reference

These speeds describe the gearing at the selected cadence, not how fast you can ride.
Calculated from published gear-inch values and their wheel-size assumptions.
These gearing values describe the bicycle, not a selected frame size.
A 100% range means one ratio; 500% means the highest ratio is five times the lowest.
For e-bikes, motor assistance cutoff is not represented.

Gear-inch range

Lower gear-inch values travel less distance per pedal revolution; higher values travel farther.

This bicycle: 19.5–99.3 gear inches
Class reference (p10–p90): 16.8–116.0 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Cross-country Model year: 2010
Lowest gear: 186 bicycles with this information, 75.6% of the class
Highest gear: 186 bicycles with this information, 75.6% of the class