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Side-by-Side Bike Comparison · September 2026

Bajaj Pulsar NS125 vs Roadmaster Rex

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

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⚡ Power Leader

Bajaj

Bajaj Pulsar NS125

Engine 125 cc

Power 12 bhp

Mileage 45 kmpl

Brakes / ABS No

Price in BD ৳179,850

Details

💎 Best Value

Roadmaster

Roadmaster Rex

Engine 80 cc

Power 6 bhp

Mileage 60 kmpl

Brakes / ABS N/A

Price in BD ৳70,900

Details

01 / Bottom-Line Takeaway

Quick Verdict

Editorial Positioning

POWER & HARDWARE #1

Bajaj Pulsar NS125 (Bajaj Pulsar NS125)

The Performance Benchmark

Delivers class-leading punch with 12 bhp and sharp throttle response. Backed by No for riders demanding confidence in high-speed and emergency scenarios.

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

VALUE CHAMPION #2

Roadmaster Rex (Roadmaster Rex)

The Value Argument

Maximizes features per taka spent at ৳70,900. Ideal balance of equipment and accessible dealer pricing without sacrificing daily road manners.

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

02 / Engine Output Benchmarks

The Dyno Room

Peak Bhp & Torque Scaled

Peak Power Output (Bhp) Top: 12 Bhp

Bajaj Pulsar NS125 (Bajaj Pulsar NS125) 12 bhp @ 8500 rpm

Roadmaster Rex (Roadmaster Rex) 6 bhp @ 8000 rpm

Peak Torque Delivery (Nm) Top: 11 Nm

Bajaj Pulsar NS125 (Bajaj Pulsar NS125) 11 Nm @ 7000 rpm

Roadmaster Rex (Roadmaster Rex) 0 Nm

Claimed Top Speeds

110 km/h

Bajaj Pulsar NS125 (Bajaj Pulsar NS125)

80 km/h

Roadmaster Rex (Roadmaster Rex)

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.

Bajaj

Bajaj Pulsar NS125 (Bajaj Pulsar NS125)

7.9 / 10

Performance 9.5

Comfort 7.3

Tech & Features 7.4

Fuel Economy 8.6

Value for Money 6.5

Roadmaster

Roadmaster Rex (Roadmaster Rex)

8.3 / 10

Performance 7.8

Comfort 8.5

Tech & Features 6.8

Fuel Economy 9.5

Value for Money 8.8

06 / Full Technical Comparison

Specification Sheet

Show Differences Only

Bike Information 11

Bike Name	Bajaj Pulsar NS125	Roadmaster Rex
Brand	Bajaj	Roadmaster
CC	125	80
Regular Price	179850	70900
Bike Type	Commuter	Commuter
Distributor/Seller	Uttara Motors Limited	Roadmaster Motors LTD
Model Year	2023	N/A
Brand Origin	India	N/A
Made In	India	N/A
Assemble In	Bangladesh	N/A
Launched Date	2023-12-22	N/A

Engine 15

Engine Type	4 stroke, air cooled, 4-valve, single cylinder, SOHC	4 – Stroke Single Cylinder
Displacement	124.45	79
Maximum Power	12 Bhp @ 8500 RPM	6 Bhp @ 8000 RPM
Maximum Torque	11 NM @ 7000 RPM	0 NM @ 0 RPM
Bore	56 mm	N/A
Stroke	50.5 mm	N/A
Compression Ratio	10:1	N/A
Valves	2	N/A
Fuel Supply	Fuel Injection	Carburetor
No of Cylinders	1	1
Engine Cooling	Air Cooled	Air Cooled
Starting Method	Kick & Electric	Kick & Electric
Engine Oil Grade	20W50	N/A
Engine Oil Capacity	1 L (Without Filter)	N/A
Best Lube For	Mobil Super 4T 20W50	N/A

Transmission 4

Transmission Type	Manual	Manual
No of Gears	5	4
Clutch Type	Wet-multiplate	Wet multi-disc clutc
Drive Type	Chain Drive	N/A

Mileage & Top Speed 2

Mileage	45 Kmpl (Approx)	60 Kmpl (Approx)
Top Speed	110 Kmph (Approx)	80 Kmph (Approx)

Chassis & Suspension 3

Chassis Type	Perimeter Frame	N/A
Front Suspension	Telescopic	Telescopic
Rear Suspension	Mono shock	Twin-Spring loaded

Brakes 6

Front Brake Type	Single Disc	Single Disc
Rear Brake Type	Drum Brake	Drum Brake
Front Brake Diameter	240 mm	N/A
Rear Brake Diameter	230 mm	N/A
Anti-Lock Braking System (ABS)	No	N/A
Braking System	CBS Braking	N/A

Wheels & Tyres 4

Front Tyre Size	80/100-17	2.50-17
Rear Tyre Size	100/90-17	2.75-17
Tyre Type	Tubeless	Tubetyre
Wheel Type	Alloy	Alloy

Dimensions 8

Overall Length	2012 mm	1940 mm
Overall Width	810 mm	800 mm
Height	1078 mm	1300 mm
Ground Clearance	179 mm	N/A
Weight	144 Kg	88.8 Kg
Fuel Tank Capacity	12L	9.5L
Wheelbase	1353 mm	1200 mm
Seat Height	805 mm	N/A

Electricals 5

Battery Type	mf	MF
Battery Voltage	12 V, 8 Ah	12v
Head Light	Halogen	Halogen
Tail Light	LED	Halogen
Indicators	Halogen	Halogen

Features 8

Speedometer	Digital	Analog
Odometer	Digital	Analog
RPM Meter	Analog	Digital
Handle Type	Three part handle bar	Pipe handle bar
Seat Type	Split-Seat	Single-Seat
Passenger Grab Rail	Yes	Yes
Engine Kill Switch	Yes	No
Additional Feature	N/A	N/A