Cotic Solaris Downcountry / Gold XT Di2

2025 MountainTrail Manufacturer page

Price: Not published

Prices shown first for United States
United Kingdom: £4,599 Last known price
Fork travel: 120 mm
Wheels: 29″
Drivetrain: 1 × 12 30t / 9–45t
Gear range: 500%
Frame: Steel
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

C1 162–172
C2 170–178
C3 176–184
C4 182–190
C5 184–195

Components

12 of 12 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.

Suspension

1 part

Fork
- RockShox SID Ultimate 3P

Drivetrain

4 parts

Bottom bracket
- Shimano BB-MT801
BB-MT801
Cassette
- Shimano Deore XT CS-M8200 12 speeds
CS-M8200
Crankset
- Shimano Deore XT FC-M8200 12 speeds 30t
FC-M8200
Rear derailleur
- Shimano Deore XT RD-M8200 12 speeds
RD-M8200

Brakes

1 part

Brakes
- Shimano

Wheels and tires

2 parts

Cockpit and contact points

4 parts

Sizes and geometry

5 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size C3

Table

Reach 474mm

Stack 630mm

Wheelbase 1210mm

Head angle 66.0°

Seat angle 75.0°

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	438	456	474	492	510
Stackmm	611	620	630	639	639
Top tube lengthmm	602	622	643	663	681
Seat tube lengthmm	390	417	444	471	495
Head tube lengthmm	100	110	120	130	130
Head tube angle	66°	66°	66°	66°	66°
Seat tube angle	75°	75°	75°	75°	75°
Chainstay lengthmm	444	444	444	444	444
Wheelbasemm	1166	1188	1210	1232	1250
Front centermm	731	753	775	797	815
Bottom bracket dropmm	70	70	70	70	70
Bottom bracket heightmm	304	304	304	304	304
Fork rakemm	44	44	44	44	44
Trailmm	119	119	119	119	119
Stack/reach ratio	1.40	1.36	1.33	1.30	1.25
Suspension and parts
Stem lengthmm	25	25	25	25	25

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

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Steel

Suspension

Suspension configuration: Hardtail
Front travel: 120 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 30
Largest chainring: 30
Rear sprockets: 12
Smallest sprocket: 9
Largest sprocket: 45
Lowest gear: 19.3 in
Highest gear: 96.7 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Dropper seatpost
Shifting: Electronic

Additional specifications

Bottom bracket standard: BSA
Tire width: 2.4″
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

120 mm

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2025
Sample: 1,808 bicycles with this information
Coverage: 97.5% of the class

Lowest gear

19.3 gear inches

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2025
Sample: 1,382 bicycles with this information
Coverage: 74.5% of the class

Highest gear

96.7 gear inches

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2025
Sample: 1,382 bicycles with this information
Coverage: 74.5% of the class

Shifting

Electronic

387 of 1,847 bicycles with this information use electronic shifting.

Cohort: Mountain / Trail Model year: 2025
Sample: 1,847 bicycles with this information
Coverage: 99.6% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 7.4 km/h
Highest gear: 37.0 km/h

Total gear range 500%

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: 19.3–96.7 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: 1382 bicycles with this information, 74.5% of the class
Highest gear: 1382 bicycles with this information, 74.5% 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

Differences across 2025 builds
Specification	This bicycle Cotic Solaris Downcountry / Gold XT Di2	Cotic Solaris Bronze Deore	Cotic Solaris Downcountry / Gold Eagle 90	Cotic Solaris Downcountry / Gold XT	Cotic Solaris Downcountry / Platinum X0 Transmission	Cotic Solaris Downcountry / Platinum XTR Di2
Suspension
Front travel	120 mm	130 mm	120 mm	120 mm	120 mm	120 mm
Drivetrain
Front chainrings	1	1	1	1	1	Not informed
Smallest chainring	30	32	Not informed	32	Not informed	Not informed
Largest chainring	30	32	Not informed	32	Not informed	Not informed
Smallest sprocket	9	10	10	10	Not informed	9
Largest sprocket	45	51	52	51	Not informed	45
Lowest gear	19.3 in	18.2 in	Not informed	18.2 in	Not informed	Not informed
Highest gear	96.7 in	92.8 in	Not informed	92.8 in	Not informed	Not informed
Cockpit
Seatpost	Dropper seatpost	Rigid seatpost	Dropper seatpost	Dropper seatpost	Dropper seatpost	Dropper seatpost
Shifting	Electronic	Mechanical	Mechanical	Mechanical	Electronic	Electronic
Derailleur hanger	Not informed	Not informed	Not informed	Not informed	UDH	Not informed
Other specifications
Bottom bracket standard	BSA	Not informed	Not informed	BSA	Not informed	Not informed
Fork spring	Not informed	Air	Not informed	Not informed	Not informed	Not informed