Original Yamaha NMAX 125 Crankshaft Assembly (B6H-E1400-20) | 2021-2024

Sale price£127.50 GBP

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Discover the ultimate upgrade for your motorcycle.
Designed with precision engineering, this offers unmatched performance and durability.


You'll notice it in the ride, extra vibration, less smooth pull, a bit of harshness that wasn't there before. This original Yamaha NMAX 125 crankshaft assembly (B6H-E1400-20) sorts that by restoring proper balance and rotation at the core of the engine. A direct-fit fix that makes a real difference.

Vetted by our Lead Engineer. Leveraging 30 years of mechanical pedigree, every part is inspected for material density and exact tolerances to ensure a 'Right-First-Time' fit.

Order in the next -- hours -- mins for guaranteed 1 PM Same-Day Dispatch from our London NW10 Hub.
Protect your shift — Back on the road tomorrow.

Guaranteed fitment for Yamaha GPD125-A NMAX or free returns.

Product Compatibility

Compatibility charts are for reference only. Please compare part numbers and manufacturers' details. Contact us before ordering if unsure to avoid delays or refund charges.

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Part Number
  • B6H-E1400-20
Alternative Part Number

_

  • B6H-E1400-10, B6H-E1400-40, BAL-E1400-10
Model
  • GPD125-A NMAX
Year
  • 2021
  • 2022
  • 2023
  • 2024
MFG
  • Yamaha

Product Overview

This high-quality Original Crankshaft Assy is designed to meet or exceed factory performance standards and is suitable for Yamaha NMAX 125 / Tricity 125 2021-2024 models.

The Crankshaft Assy is the central rotating component of the engine, converting the reciprocating motion of the piston into rotational power delivered to the transmission. A worn, damaged or seized crankshaft causes severe engine vibration, loss of power, unusual knocking noises and in severe cases complete engine failure. This original replacement is manufactured to original factory specifications, ensuring correct fitment and restoring engine rotation and reliable power delivery.

• Brand New Original Crankshaft Assy
• Part Number: B6H-E1400-20
• Alternative Part Numbers: B6H-E1400-10, B6H-E1400-40, BAL-E1400-10
• Original replacement for Yamaha NMAX 125 / Tricity 125 (2021-2024)
• Restores correct engine rotation and reliable power delivery
• Eliminates vibration, knocking and power loss caused by a worn or damaged crankshaft
• Ensures correct fitment with the engine block and rotating assembly
• Essential for engine bottom-end rebuild or overhaul
• Drop-in replacement, no modification required
• London: Express same-day delivery (2-3 hours)
• Rest of UK: Same-day dispatch on orders before 1 PM (3-4 business days delivery).
• Up to 75% off for B2B Trade Accounts. Independent UK garages, apply now.

• Yamaha NMAX 125 / Tricity 125 owners experiencing engine vibration, knocking or power loss
• Replacing a worn, damaged or seized Crankshaft Assy
• Mechanics and workshops carrying out Yamaha NMAX 125 / Tricity 125 engine bottom-end rebuilds or overhauls
• Riders wanting to restore correct engine operation and reliable power delivery
• Anyone sourcing a guaranteed original replacement for the Yamaha NMAX 125 / Tricity 125

Complete Part Guide

When you get that slight knock or vibration, it's usually the start of bigger crankshaft-related damage, and that's where the original Yamaha NMAX125 Crankshaft Assembly (B6H-E1400-20) comes in. We see this a lot during inspections. As the crank wears, rotation isn't as stable, and it slowly affects performance. Riders don't always catch it early. Fit this crankshaft, and it sorts it, smooth rotation again, proper balance, and consistent power through the engine. Made to Yamaha spec, so it fits spot on. Available from Part Hive with same-day UK dispatch, order before 1 PM from our London hub.

Engines that are used hard show it in the crankshaft first. Typically, constant load causes internal wear that affects rotation and balance. In the workshop, we see this on high-mileage or heavily used NMAX-125 bikes. Riders may not notice until performance drops. We install this original Yamaha crankshaft assembly and it restores strength where it matters, ensures tight alignment, and keeps the engine solid under load.

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