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Side-by-Side Bike Comparison · September 2026

Roadmaster Rex vs Roadmaster Velocity 125

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

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💎 Best Value

Roadmaster

Roadmaster Rex

Engine 80 cc

Power 6 bhp

Mileage 60 kmpl

Brakes / ABS N/A

Price in BD ৳70,900

Details

⚡ Power Leader

Roadmaster

Roadmaster Velocity 125

Engine 125 cc

Power 7.4 bhp

Mileage 45 kmpl

Brakes / ABS No

Price in BD ৳107,900

Details

01 / Bottom-Line Takeaway

Quick Verdict

Editorial Positioning

VALUE CHAMPION #1

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.

POWER & HARDWARE #2

Roadmaster Velocity 125 (Roadmaster Velocity 125)

The Performance Benchmark

Delivers class-leading punch with 7.4 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.

02 / Engine Output Benchmarks

The Dyno Room

Peak Bhp & Torque Scaled

Peak Power Output (Bhp) Top: 7.4 Bhp

Roadmaster Rex (Roadmaster Rex) 6 bhp @ 8000 rpm

Roadmaster Velocity 125 (Roadmaster Velocity 125) 7.4 bhp @ 7500 rpm

Peak Torque Delivery (Nm) Top: 9.4 Nm

Roadmaster Rex (Roadmaster Rex) 0 Nm

Roadmaster Velocity 125 (Roadmaster Velocity 125) 9.4 Nm @ 5500 rpm

Claimed Top Speeds

80 km/h

Roadmaster Rex (Roadmaster Rex)

110 km/h

Roadmaster Velocity 125 (Roadmaster Velocity 125)

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.

Roadmaster

Roadmaster Rex (Roadmaster Rex)

8.5 / 10

Performance 8.8

Comfort 8.5

Tech & Features 6.8

Fuel Economy 9.5

Value for Money 8.8

Roadmaster

Roadmaster Velocity 125 (Roadmaster Velocity 125)

7.9 / 10

Performance 9.5

Comfort 6.7

Tech & Features 6.8

Fuel Economy 8.6

Value for Money 7.9

06 / Full Technical Comparison

Specification Sheet

Show Differences Only

Bike Information 11

Bike Name	Roadmaster Rex	Roadmaster Velocity 125
Brand	Roadmaster	Roadmaster
CC	80	125
Regular Price	70900	107900
Bike Type	Commuter	Commuter
Distributor/Seller	Roadmaster Motors LTD	Roadmaster Motors LTD
Model Year	N/A	N/A
Brand Origin	N/A	N/A
Made In	N/A	N/A
Assemble In	N/A	N/A
Launched Date	N/A	N/A

Engine 15

Engine Type	4 – Stroke Single Cylinder	4 – Stroke Single Cylinder
Displacement	79	125
Maximum Power	6 Bhp @ 8000 RPM	7.4 Bhp @ 7500 RPM
Maximum Torque	0 NM @ 0 RPM	9.4 NM @ 5500 RPM
Bore	N/A	N/A
Stroke	N/A	N/A
Compression Ratio	N/A	N/A
Valves	N/A	N/A
Fuel Supply	Carburetor	Carburetor
No of Cylinders	1	N/A
Engine Cooling	Air Cooled	Air Cooled
Starting Method	Kick & Electric	Kick & Electric
Engine Oil Grade	N/A	N/A
Engine Oil Capacity	N/A	N/A
Best Lube For	N/A	N/A

Transmission 4

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

Mileage & Top Speed 2

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

Chassis & Suspension 3

Chassis Type	N/A	N/A
Front Suspension	Telescopic	Telescopic type Front Shock Absorber
Rear Suspension	Twin-Spring loaded	Nitrox gas suspension

Brakes 6

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

Wheels & Tyres 4

Front Tyre Size	2.50-17	2.75-18
Rear Tyre Size	2.75-17	3.25/18
Tyre Type	Tubetyre	Tubeless
Wheel Type	Alloy	Alloy

Dimensions 8

Overall Length	1940 mm	1925 mm
Overall Width	800 mm	750 mm
Height	1300 mm	1075 mm
Ground Clearance	N/A	155 mm
Weight	88.8 Kg	120 Kg
Fuel Tank Capacity	9.5L	14 L
Wheelbase	1200 mm	1300 mm
Seat Height	N/A	N/A

Electricals 5

Battery Type	MF	MF
Battery Voltage	12v	12V, 6.5Ah
Head Light	Halogen	12V 14W/14W Halogen
Tail Light	Halogen	Halogen
Indicators	Halogen	Halogen

Features 8

Speedometer	Analog	Info-Not-Available
Odometer	Analog	Info-Not-Available
RPM Meter	Digital	Info-Not-Available
Handle Type	Pipe handle bar	Pipe handle bar
Seat Type	Single-Seat	Single-Seat
Passenger Grab Rail	Yes	Yes
Engine Kill Switch	No	Info-Not-Available
Additional Feature	N/A	N/A