Norco Optic A2

2025 MountainTrail Manufacturer page

Last known price: $3,399

Prices shown first for United States
Travel: 140 / 125 mm Fork / rear shock
Wheels: 29″
Drivetrain: 1 × 12 30t / 10–51t
Gear range: 510%
Weight: 17.2 kg 37.9 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

1 154.9–165.1
2 162.6–172.7
3 170.2–180.3
4 177.8–188
5 185.4–195.6

Components

21 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

Aluminum Frame, 125mm Travel, UDH, Eagle Transmission Compatible, Ride Aligned™ Not identified

Suspension

2 parts

Drivetrain

7 parts

Bottom bracket
- Shimano
Cassette
- Shimano Deore CS-M6100-12 12 speeds 10–51t
CS-M6100-12
Chain
- Shimano Deore CN-M6100
CN-M6100
Chain guide
- Norco
Crankset
- Shimano FC-MT512 12 speeds 30t
FC-MT512
Rear derailleur
- Shimano Deore RD-M6100 12 speeds
RD-M6100
Shifters
- Shimano Deore SL-M6100 12 speeds
SL-M6100

Brakes

3 parts

Wheels and tires

4 parts

Cockpit and contact points

6 parts

Grips
- Ergon
Handlebar

6061 Alloy, 800mm, 25mm Rise Not identified
Headset
- FSA
Saddle
- SDG Bel-Air
Seatpost
- Tranz-X
Stem
- Norco

Sizes and geometry

5 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size 3

Table

Reach 473mm

Stack 626mm

Wheelbase 1226mm

Head angle 65.0°

Seat angle 77.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 29″ wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 5 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	422.5	447.5	472.5	497.5	522.5
Stackmm	608	617	626	635	644
Top tube lengthmm	568	593	617	641	665
Seat tube lengthmm	350	370	385	430	445
Head tube lengthmm	100	110	120	130	140
Head tube angle	65°	65°	65°	65°	65°
Seat tube angle	76.5°	76.75°	77°	77.25°	77.5°
Chainstay lengthmm	421	425	429	433	437
Wheelbasemm	1159	1193	1226	1259	1292
Front centermm	740	770	799	828	857
Bottom bracket dropmm	32	32	32	32	32
Bottom bracket heightmm	346	346	346	346	346
Standover heightmm	660	673	682	703	714
Fork rakemm	44	44	44	44	44
Trailmm	128	128	128	128	128
Stack/reach ratio	1.44	1.38	1.33	1.28	1.23
Suspension and parts
Crank lengthmm	170	170	170	170	170
Stem lengthmm	40	40	40	40	40

Not published by the manufacturer: Front travel, Rear travel, Handlebar width, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum
Bicycle weight: 17.2 kg

37.9 lb

Suspension

Suspension configuration: Full suspension
Front travel: 140 mm
Rear travel: 125 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 30
Largest chainring: 30
Rear sprockets: 12
Smallest sprocket: 10
Largest sprocket: 51
Lowest gear: 17.1 in
Highest gear: 87.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Derailleur hanger: UDH
Seatpost: Dropper seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BSA
Fork spring: Air
Tire width: 2.5″
Wheel material: Aluminum
Wheel size: 29″

Technical analysis

4 measures

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

Front travel

140 mm

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2025
Sample: 1,810 bicycles with this information
Coverage: 97.5% of the class

Lowest gear

17.1 gear inches

This value is below the central range for this class.

Cohort: Mountain / Trail Model year: 2025
Sample: 1,384 bicycles with this information
Coverage: 74.6% of the class

Highest gear

87.0 gear inches

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2025
Sample: 1,384 bicycles with this information
Coverage: 74.6% of the class

Shifting

Mechanical

388 of 1,849 bicycles with this information use electronic shifting.

Cohort: Mountain / Trail Model year: 2025
Sample: 1,849 bicycles with this information
Coverage: 99.6% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 6.5 km/h
Highest gear: 33.3 km/h

Total gear range 510%

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: 17.1–87.0 gear inches
Class reference (p10–p90): 17.1–98.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Trail Model year: 2025
Lowest gear: 1384 bicycles with this information, 74.6% of the class
Highest gear: 1384 bicycles with this information, 74.6% of the class

Lineup changes

The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.

Differences across 2025 builds
Specification	This bicycle Norco Optic A2	Norco Optic A1	Norco Optic C1	Norco Optic C2	Norco Optic C2 MX	Norco Optic C2 MX \| Shore Series
Frame
Frame material	Aluminum	Aluminum	Carbon	Carbon	Carbon	Carbon
Bicycle weight	17.2 kg	16.1 kg	14.7 kg	15 kg	15.5 kg	15.5 kg
Drivetrain
Smallest chainring	30	30	30	30	32	32
Largest chainring	30	30	30	30	32	32
Largest sprocket	51	52	52	52	52	52
Lowest gear	17.1 in	16.7 in	16.7 in	16.7 in	17.9 in	17.9 in
Highest gear	87.0 in	87.0 in	87.0 in	87.0 in	92.8 in	92.8 in
Cockpit
Shifting	Mechanical	Electronic	Electronic	Electronic	Electronic	Electronic
Other specifications
Fork spring	Air	Air	Air	Not informed	Air	Air
Wheel material	Aluminum	Aluminum	Carbon	Aluminum	Aluminum	Aluminum