Yamaha MT-125 and MT-03 Exhaust and Accessories Guide
Yamaha's Dark Side at Small Displacement
Yamaha's MT series is built around a single concept: "the dark side of Japan" — aggressive, stripped-back styling inspired by the larger MT-09 and MT-10 naked bikes. The MT-125 and MT-03 bring this design language to A1 and A2 licence categories, and both bikes deliver a genuinely purposeful riding experience that puts most competitors at these capacities to shame.
MT-125: The A1 Benchmark
The MT-125 is widely considered the benchmark A1 learner bike in the UK market. Its VVA (Variable Valve Actuation) engine provides strong low-down torque and a rev-happy top end that makes it feel significantly more capable than most 125cc bikes. The styling is cohesive and aggressive, and the quality of components — inverted forks, LED lighting — puts it well above most competitors at the price.
For accessories, the MT-125's aggressive character means upgrades that enhance the dark, purposeful aesthetic work best. High-gloss or carbon-look finishes suit the design better than chrome or retro-influenced options.
MT-03: The A2 Choice for Enthusiasts
The MT-03's 321cc parallel-twin is one of the most rewarding engines available in the A2 category. Smooth, rev-happy, and with a strong top-end rush that justifies its high rev limit, it makes the MT-03 feel like a genuinely exciting motorcycle rather than a restricted learner tool.
The MT-03 has an established aftermarket — it's been in production long enough that quality accessories from reputable manufacturers are readily available at reasonable prices.
Exhaust Upgrades: MT-125
The MT-125's single-cylinder engine produces a relatively quiet sound in standard trim. Aftermarket exhausts transform this significantly — a quality slip-on converts the MT-125 from a bike that sounds like a 125cc commuter to something more purposeful and characterful.
The most popular options use short, under-seat mufflers that mirror the styling of the larger MT bikes. This maintains visual consistency across the range and looks genuinely good on the MT-125's aggressive bodywork.
Exhaust Upgrades: MT-03
The MT-03's parallel-twin responds better to exhaust work than most A2 bikes. A quality slip-on or full system significantly improves the exhaust note — the twin-cylinder configuration produces a more complex sound than a single, and aftermarket work brings this character out clearly.
Browse Yamaha exhaust systems for MT-125 and MT-03 options, and the wider exhaust collection for additional choices.
Crash Protection
Both the MT-125 and MT-03 benefit from frame sliders. The MT-125's fuel tank and fairings are expensive to replace in a tip-over, and sliders that protect the engine case and frame significantly reduce repair costs. For the MT-03, sliders that protect the clutch and alternator covers are the priority — these protrude on the parallel-twin and are vulnerable in a fall.
Visual Upgrades
The MT range suits aggressive, technical-looking visual upgrades. Popular additions include:
- Radiator guards: Protect the exposed radiator and add an industrial look
- Tail tidies/number plate relocators: Give a cleaner rear end — the standard number plate mounting is functional but visually heavy
- Engine covers: Billet items for the clutch and alternator covers catch the eye on the naked-styled bikes
- Bar-end mirrors: Maintain the clean handlebar look and improve rear visibility
Making the MT Feel Like a Bigger Bike
The MT-125 and MT-03's visual design already punches above their displacement. The right accessories — quality exhaust, clean visual upgrades, correct tyre choice — make these bikes look and feel substantially more premium. This matters for riders who'll spend two or more years on an A2 licence and want a bike that doesn't feel like an interim step.
Shop Yamaha MT Accessories
Find exhaust systems and accessories for your MT: Yamaha exhaust systems and the full exhaust range.