30-Year Arcs / A1-Licence / Yamaha MT-125 Lineage
Yamaha Japan

Yamaha MT-125. The most accomplished A1 naked.

Launched 2014, the Yamaha MT-125 is the naked sister to the YZF-R125. Same engine, same chassis, naked-bike ergonomics. 14.8bhp from a 125cc VVA single, 142kg wet, 810mm seat — A1-licence compliant, with Yamaha's hyper-naked MT-series styling DNA. £4,704 OTR for 2026. 1996/2006 = Yamaha had no 125cc naked sport-bike (only commuters and the YZ125 motocrosser). MT-125 created Yamaha's small-bike naked offering, gateway to the MT-07 / MT-09 line.

1996
None (no Yamaha 125 naked sport-bike)
2006
None (still no Yamaha 125 naked)
2016
MT-125 (1st gen, 2014-2019)
2026
MT-125 (current 2nd gen with VVA)
Continual audits are underway to verify local pricing for every bike in every market. Apologies for any gaps you see while this is in progress.
1996 30 yrs ago · None
No bike for this era

No Yamaha 125 naked

Yamaha 125 line was YZ125 motocrosser, TZR125 2-stroke
No 125 naked sport-bike from Yamaha at all

STATUS · ABSENT
NONE
TZR125R 2-stroke
2006 20 yrs ago · None
No bike for this era

No Yamaha 125 naked

Yamaha 125 line was YBR125 commuter, TW125 retro
MT-125 was 8 years away

STATUS · 8 YEARS OUT
GAP
YBR125 commuter
2016 MT-125 (1st gen, 2014-2019)
2016 Yamaha MT-125 first-generation

Yamaha MT-125 (1st gen)

Same chassis/engine as R125, naked stance
Aluminium Deltabox-style frame, USD forks

125cc liquid-cooled SOHC single, VVA
15 bhp
12.4
138
810
Aluminium frame (Deltabox-style)USD KYB forksDual-channel ABSVVA variable valve actuationLCD dashLED tail (halogen headlight)Fuel injectionSlip/assist clutchQuickshifterTraction controlSmartphone connectivityMT-series naked styling
Known issues
  • Halogen headlight feels old by 2016 standards
  • Tall 810mm seat
  • No quickshifter even as option
  • Tank only 11L — ~200 mile range
  • Service intervals 6,000 miles
£3,799
~£5,210
£2.4-3.5k
2026 Current · MT-125 (2nd gen, 2020-on)
2026 Yamaha MT-125 second-generation

Yamaha MT-125

2020 redesign: full LED, slip/assist, 5in TFT (2023+)
VVA, ride-by-wire, MT family styling

125cc liquid-cooled SOHC single, VVA
14.8 bhp
11.5
142
810
Aluminium frame (Deltabox-style)USD KYB forksDual-channel ABSVVA variable valve actuationRide-by-wire (2023+)Slip/assist clutchTraction control (2023+)5in TFT dash (2023+, Y-Connect)Full LED lightingMT-09-inspired stylingUSB-C chargeSmartphone connectivity (Y-Connect)A1-licence compliant
Known issues
  • Tall 810mm seat — entry barrier for shorter riders
  • No quickshifter even as option (vs KTM, Aprilia offer it)
  • Tank 11L — ~210 mile range (compact)
  • Service intervals 6,000 miles
  • Yamaha pricing ~£200 below KTM Duke 125 (£4,899)
  • Otherwise the most well-rounded A1 naked you can buy
£4,704
KTM 125 Duke £4,899
MT-125
// 30-Year Delta

What actually changed.

1996 → 2026 · 30 years of "progress"
MT-125 = entry to the MT family Gateway to MT-07, MT-09 The MT-125 is positioned as the entry point to Yamaha's MT-series — MT-125 → MT-03 → MT-07 → MT-09 → MT-10. Same naked-bike DNA (high bars, sharp styling, MT-series headlight design). Yamaha actively markets the MT-125 as a 'first-bike' that makes the MT-09 feel familiar when the rider upgrades. Smart commercial positioning.
VVA — borrowed from R125 Same engine tech The MT-125 uses Yamaha's Variable Valve Actuation (VVA) — same tech as the YZF-R125. Two-stage cam profile switching at 6,000-7,500rpm. Helps the 125cc engine deliver low-rpm torque AND peak power. None of the rival 125 nakeds (KTM 125 Duke, Aprilia Tuono 125, Honda CB125R) have variable valve tech.
Aluminium frame Class-first 2014 The 2014 MT-125 was the first 125cc naked sportbike with an aluminium frame (rivals used steel trellis or backbone frames). Yamaha brought R-series sportbike chassis tech to the A1 segment. Direct beneficiary: handling — MT-125 feels lighter and sharper than its weight suggests.
5in TFT for 2023+ Class-leading dash 2023 update brought a 5-inch TFT dashboard with Y-Connect smartphone connectivity. Earlier MT-125s had LCD only. KTM 125 Duke also has TFT. Honda CB125R, Suzuki GSX-S125 still use LCD. MT-125 + Duke 125 have the most modern instrument clusters in the A1 naked segment.
Build quality vs KTM Duke MT wins on polish Side-by-side: MT-125 has tighter panel gaps, slicker switch action, more refined lever feel than the Bajaj-built KTM Duke 125. The KTM has more aggressive styling and slightly better suspension; the Yamaha has better fit and finish. Personal preference territory — both are excellent.
No quickshifter — Yamaha's blind spot Rivals offer it MT-125 has no quickshifter, even as an option. KTM 125 Duke offers one (£350). Aprilia Tuono 125 offers one. Honda CB125R doesn't. Yamaha's blind spot — they market the MT-125 as an entry to MT-09 territory, where quickshifter is standard. For new riders, quickshifter is a useful skill-builder; Yamaha not offering it is a small but real gap.
Insurance + servicing Cheapest in class Insurance group 5 (low). Service intervals 6,000 miles, Yamaha dealer prices ~£150-£200 per service. Total run cost over 5 years (insurance + service + tax + tyres + fuel) ~£700-£900/year — slightly less than KTM 125 Duke (~£800-£1000). Most cost-effective A1 naked over 5-year ownership.
// Sources

Where these numbers come from

Every figure on this page is from a published manufacturer spec sheet or a reputable review publication. No press junkets, no opinions in the spec data. Inflation calculated using Bank of England's CPI tool.

1996/2006 No MT-125 Yamaha UK heritage · MT-125 launched 2014
2016 MT-125 1st gen Yamaha Motor UK · MCN review · Bennetts
2026 MT-125 2nd gen Yamaha Motor Europe · MCN · Bennetts BikeSocial