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Side-by-Side Bike Comparison · September 2026

GPX Demon GR250R vs Kawasaki Ninja 300

Technical comparison of performance curves, real-world dyno numbers, verified ratings, and full dynamic spec sheets.

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💎 Best Value

GPX

GPX Demon GR250R

Engine 250 cc

Power 29 bhp

Mileage 30 kmpl

Brakes / ABS Dual-Channel

Price in BD ৳414,990

Details

⚡ Power Leader

Kawasaki

Kawasaki Ninja 300

Engine 300 cc

Power 38.88 bhp

Mileage 30 kmpl

Brakes / ABS Dual-Channel

Price in BD Price TBA

Details

01 / Bottom-Line Takeaway

Quick Verdict

Editorial Positioning

VALUE CHAMPION #1

GPX Demon GR250R (GPX Demon GR250R)

The Value Argument

Maximizes features per taka spent at ৳414,990. Ideal balance of equipment and accessible dealer pricing without sacrificing daily road manners.

Best for: Budget-conscious riders looking for modern styling.

POWER & HARDWARE #2

Kawasaki Ninja 300

The Performance Benchmark

Delivers class-leading punch with 38.88 bhp and sharp throttle response. Backed by Dual-Channel for riders demanding confidence in high-speed and emergency scenarios.

Best for: Highway tours, enthusiast riding, emergency brake safety.

02 / Engine Output Benchmarks

The Dyno Room

Peak Bhp & Torque Scaled

Peak Power Output (Bhp) Top: 38.88 Bhp

GPX Demon GR250R (GPX Demon GR250R) 29 bhp @ 9500 rpm

Kawasaki Ninja 300 38.88 bhp @ 11000 rpm

Peak Torque Delivery (Nm) Top: 26.1 Nm

GPX Demon GR250R (GPX Demon GR250R) 23 Nm @ 7500 rpm

Kawasaki Ninja 300 26.1 Nm @ 10000 rpm

Claimed Top Speeds

135 km/h

GPX Demon GR250R (GPX Demon GR250R)

200 km/h

Kawasaki Ninja 300

Dyno takeaway: Engine cooling hardware (liquid vs oil vs air) and gear ratios determine how long peak power can be sustained on open highway runs.

03 / Multi-Vector Scorecard

AI Analysis Engine

Rule-Based Specs Synthesizer

AI Engine Recommendation

Comparing power-to-weight, braking safety gear, real mileage data, and dealer price points across this matchup. Use the 5-point radar breakdown below to balance your budget against your daily riding style.

GPX

GPX Demon GR250R (GPX Demon GR250R)

8.2 / 10

Performance 8.6

Comfort 6.7

Tech & Features 7.4

Fuel Economy 9.5

Value for Money 8.8

Kawasaki

Kawasaki Ninja 300

8.6 / 10

Performance 9.5

Comfort 6.9

Tech & Features 7.4

Fuel Economy 9.5

Value for Money 9.5

06 / Full Technical Comparison

Specification Sheet

Show Differences Only

Bike Information 11

Bike Name	GPX Demon GR250R	Kawasaki Ninja 300
Brand	GPX	Kawasaki
CC	250	300
Regular Price	414990	N/A
Bike Type	Sports	Sports
Distributor/Seller	Speedoz Limited	Asian Motorbikes Ltd
Model Year	2025	N/A
Brand Origin	Thailand	Japan
Made In	China	N/A
Assemble In	Bangladesh	N/A
Launched Date	2025-08-31	N/A

Engine 15

Engine Type	Hyper Quadra, SOHC, 4 valve Liquid-cooled	4-stroke Parallel Twin
Displacement	249.6	296
Maximum Power	29 Bhp @ 9500 RPM	38.88 Bhp @ 11000 RPM
Maximum Torque	23 NM @ 7500 RPM	26.1 NM @ 10000 RPM
Bore	77 mm	62 mm
Stroke	4	49 mm
Compression Ratio	N/A	10.6:1
Valves	4	8
Fuel Supply	Fuel Injection	Fuel Injection
No of Cylinders	1	2
Engine Cooling	Liquid Cooled	Liquid Cooled
Starting Method	Electric	Electric
Engine Oil Grade	10W-40	N/A
Engine Oil Capacity	1.2 L(Without Filter)	N/A
Best Lube For	Mobil Racing 4T 10W40	N/A

Transmission 4

Transmission Type	Manual	Manual
No of Gears	6	6
Clutch Type	Wet-multiplate	Slipper Clutch
Drive Type	Chain Drive	Chain Drive

Mileage & Top Speed 2

Mileage	30 Kmpl (Approx)	30 Kmpl (Approx)
Top Speed	135 Kmph (Approx)	200 Kmph (Approx)

Chassis & Suspension 3

Chassis Type	Trellis Frame	Tube Diamond, Steel
Front Suspension	Upside Down Forks	37 mm Telescopic Fork / 120 mm
Rear Suspension	Mono 7-Step Adjustable Monoshoc	Bottom-Link Uni-Trak with gas-charged shock and 5-way adjustable pre-load / 132 mm

Brakes 6

Front Brake Type	Single Disc	Single Disc
Rear Brake Type	Disc Brake	Disc Brake
Front Brake Diameter	276 mm	290 mm
Rear Brake Diameter	220 mm	220 mm
Anti-Lock Braking System (ABS)	Dual-Channel	Dual-Channel
Braking System	Dual Channel ABS	Dual Channel ABS

Wheels & Tyres 4

Front Tyre Size	110/70-17	110/70-R17
Rear Tyre Size	150/60-R17	140/70-R17
Tyre Type	Tubeless	Tubeless
Wheel Type	Alloy	Alloy

Dimensions 8

Overall Length	2020 Mm	2015 Mm
Overall Width	747 Mm	715 Mm
Height	1145 Mm	1110 Mm
Ground Clearance	159 Mm	140 Mm
Weight	158 kg	179 kg
Fuel Tank Capacity	11 L	17 L
Wheelbase	1,350 Mm	1405 Mm
Seat Height	815 Mm	780 Mm

Electricals 5

Battery Type	MF	MF
Battery Voltage	12V 6Ah	12v
Head Light	LED	LED
Tail Light	LED	LED
Indicators	LED	LED

Features 8

Speedometer	Digital	Digital
Odometer	Digital	Digital
RPM Meter	Digital	Digital
Handle Type	Pipe handle bar	Three part handle bar
Seat Type	Split-Seat	Split-Seat
Passenger Grab Rail	Yes	Yes
Engine Kill Switch	Yes	Yes
Additional Feature	TCS (Traction Control System), Digital (TFT Display With Bluetooth Connectivily)	N/A