Norco Siege 21

2012 BMX

Last known price: $640

Prices shown first for United States
Suspension: Rigid
Wheels: 20″
Drivetrain: 1 × 1 25t
Gear range: 100%
Weight: 10.73 kg 23.7 lb · Reference configuration not specified
Frame: Steel
Brakes: Rim brake

Sizes

Size guide

The manufacturer did not publish rider heights for these sizes.

Components

9 of 20 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

Full Chromo chrmo, 21" TT/mid bb, integrated H/T. No mounts, cable guides or bosses. Brakeless intended BMX bike/Brakes included w/Bike Not identified

Suspension

2 parts

Fork

Full Chromo/Tapered Fork Legs Not identified
Rear shock

None

Drivetrain

7 parts

Bottom bracket

Sealed 19mm Mid BB Not identified
Cassette
- Norco
Chain

1/2"*1/8""Black BMX Chain Not identified
Crankset

Three Piece Tubular Chromo 8 Spline Seamless Cranks Not identified
Front derailleur

None
Rear derailleur

None
Shifters

None

Brakes

2 parts

Brake levers
- Tektro
Brakes
- Tektro

Wheels and tires

5 parts

Front hub

Sealed 36H 3/8" Front Hub/Hollow Axle" Not identified
Rear hub

Sealed 36H 9T Rear Hub/Hollow Axle Not identified
Rims

Alienation Deviant 36H Front/Black Sheep 36H Rear Not identified
Spokes

Black Stainless Steel Spokes Not identified
Tires
- Odyssey

Cockpit and contact points

7 parts

Grips
- Norco
Handlebar

Full Chromoly H-Bar/8.5" X 29"" for 21""" Not identified
Headset
- FSA
Pedals
- Wellgo
Saddle
- Norco
Seatpost

Integrated with saddle Not identified
Stem
- Norco

Sizes and geometry

1 size Open in the geometry plotter

Complete rider-height ranges are not published for these sizes. You can still explore the geometry below.

Size 21"

Table

Geometry diagram unavailable

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

Size

Complete manufacturer geometry table 1 published size

Complete manufacturer geometry by size
Measurement
Seat tube lengthmm	235
Head tube lengthmm	117
Head tube angle	74.5°
Seat tube angle	71°
Chainstay lengthmm	349
Wheelbasemm	942
Front centermm	597
Bottom bracket dropmm	44
Bottom bracket heightmm	309

Not published by the manufacturer: Reach, Stack, Top tube length, Standover height, 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: Steel
Fork material: Steel
Bicycle weight: 10.73 kg

23.7 lb

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 1
Rear sprockets: 1
Smallest sprocket: 25
Largest sprocket: 25

Wheels and brakes

Wheel configuration: Same size
Brake type: Rim brake

Fit and controls

Seatpost: Rigid seatpost
Shifting: No shifting

Additional specifications

Tire width: 2.35″
Travel: Front: Additional specification: Not available: Yes
Rear: Additional specification: Not available: Yes
Wheel material: Aluminum
Wheel size: 20″