Original Yamaha NMAX 125 Crankshaft Assembly (B6H-E1400-10) | 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.


Good performance isn’t just about power; it’s about how smoothly that power is delivered. This original Yamaha NMAX 125 crankshaft assembly (B6H-E1400-10) restores that smooth, controlled feel by keeping everything rotating as it should. A key part of getting the engine back to its best.

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

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Part Number
  • B6H-E1400-10
Alternative Part Number

_

  • B6H-E1400-20, 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-E1400-10
• Alternative Part Numbers: B6H-E1400-20, 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
• Bolt-on 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
• Those seeking a guaranteed original replacement for the Yamaha NMAX 125 / Tricity 125

Complete Part Guide

When the engine starts to feel a bit tired, less smooth, and not as responsive, it’s usually something deeper inside the bottom‑end, and that’s where the original Yamaha NMAX125 Crankshaft Assembly (B6H-E1400-10) comes in for 2021–2024 models. As wear builds up inside, the crankshaft can’t transfer power as efficiently. This puts everything back right, smooth rotation again, steady performance, and that proper engine feel. Built to Yamaha’s standards, it fits as it should and lasts. Available now from Part Hive's London hub, enjoy same-day UK dispatch on all orders completed before 1 PM.

When riders say “it runs, but doesn’t feel right,” we look at the crankshaft. Typically, worn internals break the connection between piston movement and usable power. In the workshop, we see this when engines feel flat despite everything else checking out. Riders often can’t pinpoint it. We install this original Yamaha NMAX-125 crankshaft assembly and it restores that connection, ensures a tight and balanced fit, and brings power back to life.

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