Q140MD Moto Seat Frame kit

Description

Q140MD MOTO FRAME KIT – BUILD YOUR ULTIMATE E-MOTORBIKE

The Q140MD Moto Seat Frame Kit is Qulbix’s top-tier platform for custom off-road or road e-motorcycles. This kit with a lond and wide moto seat will allow you to build high powered e-bike beast with footpegs or pedals. You can use twist throttle, pedal assist or both. Large battery compartment for long range and speed.

Key features

• Motor-in-swing arm pivot keeps chain tension constant and low un-sprung mass
• Moto setup with foot pegs or pedals – with lower power setup you can still ride it like a pedelec
• Top-loading QRBS system for fast battery swaps and extra storage
• Wide 16” or less aggressive 19” rear tire will take you up any hill
• Easy transformation from foot pegs to pedals or vice versa – just a few tools needed
• Completely silent out-runner BLDC motor QS 205 V3MD

Controller Options

The frame features a standardised mounting position designed to accommodate a wide array of high performance controllers. The brackets are available for:

• Fardriver
• Nucular
• Votol
• Sabvoton
• Kelly
• Other brands (e.g., Adaptto, Crystalyte, etc.)

Whether you’re building for the trail, the street, or both—the Q140MD gives you the strength, flexibility, and performance like no other.

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Additional information

Motor type	QS 205 50H V3, Qulbix QS 205 50H V3MD
Front wheel suspension	FASTACE ALX13RC 2.0 front suspension, inverted, 200mm travel, progressive spring 38-60lbs. Adjustable compression and rebound.
Rear wheel suspension	Fastace shock absorber with steel spring and hydraulic damping. Adjustable spring preload, compression and rebound. Rear wheel travel: 220mm. Standard spring stiffness: 550lb.
Wheel dimensions	Front: 19'', rear: 16'' with rim lock, Front: 19”, rear: 19” with rim lock
Brakes	Fastace Power, 4 pistons, 203mm x 2,2mm rotor, with oil reservoir level window and optional brake switch.
Street-legal status	Not street legal. Off-road / closed circuit use only.
Technically permissible maximum laden mass	175 kg

Q140MD Frame 2025

Weight	8,5 kg
Color	Black, Custom color, White
Bottom bracket height	340mm
Frame material	Super strong construction steel and high tensile strength aluminium.
Weight	7,9 kg
Wheel base	1266-1308 mm
Width (between the side plates)	185 mm
Charger socket	Not included. Available separately.
Key lock	Frame integrated key-lock for controller on/off.
Head tube angle	64⁰
Head tube inside diameter	44 mm
Head tube length	130 mm
Minimum bicycle seat height	880 mm
Rear shock dimensions	240 x 76 mm
Bushing length	2 x 24 mm
Rear wheel travel	220 ali 240 mm (adjustable)

Q140MD Swing Arm Set (2025)

Weight	3 kg
Color	Black, Custom color

Q155/Q140MD Moto Seat Subframe Set

Weight	1 kg
Color	Black, Custom color, White

Q155/Q140MD Moto Seat Set

Weight	1,5 kg
Color	Black, Custom color, White

Q140MD decal set 2025

Weight	0,5 kg
Decal color	Black, Blue, Carbon, Fluorescent green, Fluorescent orange, Fluorescent red, Fluorescent yellow, Gold, Green, Light blue, Mirror, Orange, Red, Silver, White, Yellow

Q155/Q140MD Decal Set for Moto seat subframe

Weight	0,2 kg
Decal color	Black, Blue, Carbon, Fluorescent green, Fluorescent orange, Fluorescent red, Fluorescent yellow, Gold, Green, Grey, Light blue, Mirror, Orange, Red, Silver, White, Yellow

MX Foot Pegs Set for Q140MD

Weight	0,95 kg

QS 205 V3MD BLDC motor

Weight	14 kg
Color	Black
Weight	12 kg

Ferro-fluid 12ml

Weight	0,2 kg

Single speed freewheel 16T

Weight	0,35 kg

Motor chain-wheel (various sizes)

Weight	0,5 kg
No. of teeth	22T, 26T
Chain size	415

Rear chain-wheel (various sizes)

Weight	0,5 kg
No. of teeth	26T, 30T, 34T, 38T
Chain size	415

Rear Wheel Hub for MD type Swing Arm

Weight	0,6 kg

Motor drive chain EK (standard)

Weight	1 kg
Chain size	415

Amass XT60 charge plug set

Weight	0,07 kg