Motobecane Night Train Bullet Fatbike SRAM X9

2026 MountainFat bike

Last known price: $3,999

Prices shown first for United States
Wheels: 26″
Drivetrain: 2 × 10 22–36t / 11–36t
Gear range: 536%
Frame: Aluminum
Brakes: Hydraulic disc

Sizes

Size guide

15.5"
17.5"
19"
21"

The manufacturer did not publish rider heights for these sizes.

Components

13 of 14 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

Motobecane Hydroformed Aluminum ALLOY 6061 FRAME, W/DISC MOUNT, TIG WELD, replaceable rear derailleur hanger, H2O bosses, Tapered HEAD TUBE: ALLOY 1-1/8"/1.5" (50x44/62x55.95mm), L: 39/45/48/53CM = 110/120/135/150mm, B.B. SHELL: ALLOY 100MM, ALLOY (34.9xt2.25mm) W/FD BRACKET,. FOR 30.9 S/POST, 190mm Thru-Axle Rear. Internal Downtube cable routings.) Not identified

Suspension

2 parts

Fork
- RockShox Bluto
Rear shock

None

Drivetrain

6 parts

Bottom bracket
- Samox
EB-2401
Cassette
- SRAM PG-1030 10 speeds
PG-1030
Chain
- KMC X11 11 speeds
Crankset
- Samox
EB-2401
Rear derailleur
- SRAM X9
Shifters
- SRAM X7

Brakes

2 parts

Wheels and tires

2 parts

Cockpit and contact points

2 parts

Handlebar
- WTB
Headset
- FSA

Sizes and geometry

4 sizes Open in the geometry plotter

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

Size 17.5"

Table

Geometry diagram unavailable

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

Size

Complete manufacturer geometry table 4 published sizes

Complete manufacturer geometry by size
Measurement
Top tube lengthmm	595	598	619	646
Seat tube lengthmm	394	445	483	533
Head tube angle	69.5°	69.5°	69.5°	69.5°
Seat tube angle	73°	73°	73°	73°
Chainstay lengthmm	460	460	460	460
Wheelbasemm	1093	1117	1144	1170
Front centermm	634	658	685	711
Bottom bracket dropmm	24	24	24	24
Bottom bracket heightmm	319	319	319	319
Standover heightmm	709	748	775	815
Fork rakemm	51	51	51	51

Not published by the manufacturer: Reach, Stack, Head tube length, 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
Fork material: Aluminum

Suspension

Suspension configuration: Hardtail

Drivetrain

Derived by Bikelake

Front chainrings: 2
Smallest chainring: 22
Largest chainring: 36
Rear sprockets: 10
Smallest sprocket: 11
Largest sprocket: 36
Lowest gear: 15.9 in
Highest gear: 85.1 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Shifting: Mechanical

Additional specifications

Tire width: 4.5″
Travel: Front: Additional specification: Not available: No
Rear: Additional specification: Not available: Yes
Wheel material: Aluminum
Wheel size: 26″

Gearing

Estimated speeds at 80 rpm

Lowest gear: 6.1 km/h
Highest gear: 32.6 km/h

Total gear range 535%

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.