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Motorcycle comparison · Supersport

Aprilia RS4 125 (MY2011) vs Honda CBR 125 R (MY2012)

Aprilia RS4 125 vs Honda CBR 125 R: which one to buy for the riding you do.

You'll feel the Aprilia RS4 125 bite at turn-in, and it's eager to tighten its line toward the apex. The Honda CBR 125 R's bars stay neutral as you turn it in. It slots onto whatever line you pick, at any pace.

Aprilia RS4 125 (MY2011) and Honda CBR 125 R (MY2012) side by side
Aprilia RS4 125 (MY2011) 2011–2016 · Real Grip, Learner Displacement Honda CBR 125 R (MY2012) 2011–2016 · Lightweight City Learner Done Right

What makes each one tick

RS4 125

There's big-bike feel in the RS4 125, from its aluminum perimeter frame to a single that loves to rev. The chassis reacts quickly to every steering input. The single's happiest spinning high.

CBR 125 R

Comfort comes first on the CBR 125 R: a low seat and a relaxed reach to the grips leave little weight on your wrists. The fuel-injected single's power comes in smooth and predictable. The brake lever wants a firm squeeze, since the single front disc doesn't grab with much feel on its own. The front end follows any nudge.

The Voice of Experience

Portrait of NastyNils

What actually separates them

  • The CBR 125 R has the lower seat: 31.2 in (793 mm) vs 31.9 in (810 mm).
  • The RS4 125 has the lower wet weight: 265 lb (120 kg) vs 302 lb (137 kg).
  • The RS4 125 makes more peak power: 15 hp (11 kW) vs 13 hp (9.8 kW).

See every difference ↓

Which one for the way you ride

These two run dead level on commuting, twisty roads, running costs, and a first bike. Sit on both in the showroom and trust what your body says.

Who each one is built for

SoCal Canyon Performance Rider

Appalachian Technical Corner Rider

Texas Hill Country Weekend Rider

What's good, and what you'll live with

RS4 125

What owners say

Strengths

  • Top-tier sport bike

CBR 125 R

What owners say

Strengths

  • Honda Build Quality and Reliability
  • Comfortable, Upright Ergonomics
  • Exceptional Fuel Economy

Trade-offs

  • Limited Top Speed and Power
  • Basic Braking Performance
  • Soft, Budget-Oriented Suspension

Known problems to check before you buy

RS4 125

  • Fuel pump reliability issues Fuel pump failures have been reported, which can cause loss of fuel pressure, hesitation under acceleration, or engine stalling.

CBR 125 R

No confirmed faults on file yet. That's not the same as fault-free.

What they share

Displacement
125 cc
Engine
Single-cylinder
Cooling
Liquid-cooled
Gearbox
6-speed
Final drive
Chain
Front tire
100/80-17
Rear tire
130/70-17

Where the spec sheets split

Seat height and weight
RS4 125 CBR 125 R
Seat height 31.9 in (810 mm) 31.2 in (793 mm)
Wet weight 265 lb (120 kg) 302 lb (137 kg)
Engine, power and torque
RS4 125 CBR 125 R
Power 15 hp (11 kW) 13 hp (9.8 kW)
Peak power at 10,500 rpm 10,000 rpm
Torque 8 lb-ft (11 Nm) 8 lb-ft (10 Nm)
Peak torque at 8,500 rpm 8,250 rpm
Fuel tank capacity
RS4 125 CBR 125 R
Fuel capacity 3.8 US gal (14.5 L) 3.4 US gal (13 L)

What comes fitted, what costs extra

RS4 125 CBR 125 R
Quickshifter Option Not offered

Head to head, area by area

Both bikes on the same scale, one area at a time.

Braking

Engine

Handling

Suspension

Comfort

Reliability

Practicality

Sporting Capability

Usability

Specs and equipment as of October 18, 2026. The riding calls use the same ratings behind both buyer's guides.