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Side-by-Side Bike Comparison · September 2026

Bajaj CT 100 ES 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 CT 100 ES

Engine 100 cc

Power 7.6 bhp

Mileage 55 kmpl

Brakes / ABS NO

Price in BD ৳120,100

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 CT 100 ES ( Bajaj CT 100 ES)

The Performance Benchmark

Delivers class-leading punch with 7.6 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: 7.6 Bhp

Bajaj CT 100 ES ( Bajaj CT 100 ES) 7.6 bhp @ 7500 rpm

Roadmaster Rex (Roadmaster Rex) 6 bhp @ 8000 rpm

Peak Torque Delivery (Nm) Top: 8.24 Nm

Bajaj CT 100 ES ( Bajaj CT 100 ES) 8.24 Nm @ 5500 rpm

Roadmaster Rex (Roadmaster Rex) 0 Nm

Claimed Top Speeds

90 km/h

Bajaj CT 100 ES ( Bajaj CT 100 ES)

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 CT 100 ES ( Bajaj CT 100 ES)

8.3 / 10

Performance 9.5

Comfort 8.5

Tech & Features 6.8

Fuel Economy 9.2

Value for Money 7.6

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

06 / Full Technical Comparison

Specification Sheet

Show Differences Only

Bike Information 11

Bike Name	Bajaj CT 100 ES	Roadmaster Rex
Brand	Bajaj	Roadmaster
CC	100	80
Regular Price	120100	70900
Bike Type	Commuter	Commuter
Distributor/Seller	Uttara Motors Limited	Roadmaster Motors LTD
Model Year	2018	N/A
Brand Origin	India	N/A
Made In	India	N/A
Assemble In	Bangladesh	N/A
Launched Date	—	N/A

Engine 15

Engine Type	4 Stroke	4 – Stroke Single Cylinder
Displacement	99.27	79
Maximum Power	7.6 Bhp @ 7500 RPM	6 Bhp @ 8000 RPM
Maximum Torque	8.24 NM @ 5500 RPM	0 NM @ 0 RPM
Bore	47 mm	N/A
Stroke	58.8 mm	N/A
Compression Ratio	9.5:1	N/A
Valves	2	N/A
Fuel Supply	Carburetor	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	900 ml (Without Filter)	N/A
Best Lube For	Mobil Super 4T 20W50	N/A

Transmission 4

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

Mileage & Top Speed 2

Mileage	55 Kmpl (Approx)	60 Kmpl (Approx)
Top Speed	90 Kmph (Approx)	80 Kmph (Approx)

Chassis & Suspension 3

Chassis Type	Tubular single down tube	N/A
Front Suspension	Hydraulic teliscopic, 125 mm Travel. Without anti friction Bush	Telescopic
Rear Suspension	SNS suspension, 100mm wheel travel	Twin-Spring loaded

Brakes 6

Front Brake Type	Drum Brake	Single Disc
Rear Brake Type	Drum Brake	Drum Brake
Front Brake Diameter	110 mm	N/A
Rear Brake Diameter	110 mm	N/A
Anti-Lock Braking System (ABS)	NO	N/A
Braking System	Drum Brake	N/A

Wheels & Tyres 4

Front Tyre Size	2.75 X 17”, 41 P	2.50-17
Rear Tyre Size	3.00 X 17”, 50 P	2.75-17
Tyre Type	Tube tyre	Tubetyre
Wheel Type	Alloy	Alloy

Dimensions 8

Overall Length	1945 mm	1940 mm
Overall Width	752 mm	800 mm
Height	1072 mm	1300 mm
Ground Clearance	160 mm	N/A
Weight	110 Kg	88.8 Kg
Fuel Tank Capacity	10.50 Litres	9.5L
Wheelbase	1235 mm	1200 mm
Seat Height	804 mm	N/A

Electricals 5

Battery Type	mf	MF
Battery Voltage	12v	12v
Head Light	Halogen	Halogen
Tail Light	Halogen	Halogen
Indicators	Halogen	Halogen

Features 8

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