
Aftermarket Honda PCX 125 Crankshaft Bearing Radial Ball 6305U (91002-K40-V01) | 2021-2025
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Discover the ultimate upgrade for your motorcycle.
Designed with precision engineering, this offers unmatched performance and durability.
This performance-grade, Honda PCX 125 aftermarket Crankshaft Bearing Radial Ball 6305C3 (91002-K40-V01) 2021-2025 is precision-engineered to restore smooth engine rotation, eliminating deep bottom-end rumble from pitted main bearings. Built for eSP+ heat cycles and high-mileage courier stress with C3 clearance for thermal expansion, it replaces noisy, worn bearings without repeat failures.
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.
Guaranteed fitment for Honda PCX125 or free returns.
Delivery Information
Orders placed before 12:00pm (UK time) are usually dispatched the same working day. Orders placed after this time will be dispatched on the next working day.
In the rare event of a stock shortage, we will notify you promptly and issue a full refund within one working day if the item cannot be supplied.
Once dispatched, tracking information will be provided via email, provided valid contact details are supplied at checkout.
While we aim to meet all estimated delivery times, delays may occasionally occur due to circumstances beyond our control, such as courier issues, weather conditions, or operational disruptions. Should this happen, we will keep you informed.
Delivery Areas
We currently deliver to:
• United Kingdom
• Republic of Ireland
• Isle of Man
• Jersey & Channel Islands
• Most European destinations
If you are unsure whether we deliver to your location, please contact us prior to placing your order.
Verified UK Entity #15361806 operating from our NW10 London Logistics Hub. Skip the wait with express workshop pickup.


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.
Trademark Disclaimer: All trademarks, brand names, and logos remain the property of their respective owners and are used solely for identification and compatibility purposes. We are an independent retailer and are not affiliated with any authorized dealer or distributor.
- 91002-K40-V01
_
- 91002-K1N-V01, 91002-K40-V01, 91002-K40-F01
- PCX125
- 2021
- 2022
- 2023
- 2024
- 2025
- Honda
- 125
- PCX125
- NEW
Product Overview
This high-quality Crankshaft Bearing Radial Ball 6305U is designed to meet or exceed factory performance standards and is suitable for Honda PCX125 (2021-2025) models.
The crankshaft bearing radial ball 6305U is a heavy-duty precision bearing that supports the crankshaft within the crankcase, allowing it to rotate freely and transfer power to the transmission and drivetrain with minimal friction and wear. When the crankshaft bearing wears, develops surface damage, or begins to fail, the engine typically develops a deep knocking or rumbling noise at low speeds, increased vibration is transmitted through the chassis, and in severe cases, the bearing can seize or collapse, causing catastrophic internal engine damage. This quality aftermarket replacement is built to match original specifications, restoring reliable crankshaft bearing support and smooth engine operation to your PCX125.
- Brand New Aftermarket Crankshaft Bearing Radial Ball 6305U
- Part Number: 91002-K40-V01
- Alternative Part Numbers: 91002-K1N-V01, 91002-K40-F01
- Compatible with Honda PCX125 (2021-2025)
- Restores smooth, low-friction crankshaft support
- Prevents crankshaft bearing noise, vibration, and engine damage
- Direct replacement, no modification required
- Ideal for engine bottom-end rebuild and scheduled crankshaft bearing replacement
- 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.
• Honda PCX125 owners with a knocking, rumbling, or worn crankshaft bearing
• Replacing the Crankshaft Bearing Radial Ball 6305U during engine rebuild or crankcase overhaul
• Mechanics and workshops carrying out Honda PCX125 engine bottom-end servicing
• Riders wanting to restore reliable crankshaft bearing support to their 2021-2025 PCX125
• Anyone looking for a quality aftermarket replacement for their Honda PCX125
Complete Part Guide
The crankshaft bearing on your Honda PCX125 2021-2025 acts as the central support for the entire rotating assembly, making it critical for engine balance. A failing 6305U radial ball bearing often causes a deep rumbling noise and can lead to severe crankcase damage if the play becomes excessive. This premium Honda aftermarket replacement (91002-K40-V01) provides the structural integrity and heat resistance needed to protect your bike's bottom end. Stocked at Part Hive's London warehouse, complete your order before the 1 PM cutoff for guaranteed same-day UK dispatch.
We often see 2021-2025 Honda PCX-125 units in the workshop with bottom-end knocks that signal the main bearings have pitted or developed flat spots, usually from high-mileage courier work or oil starvation. If you notice a low-frequency vibration that increases with RPM, the 6305U radial bearing has likely lost its precision tolerance. Replacing this with a low-grade generic bearing is a mistake. The heat generated at the crank requires a performance-grade internal clearance. This performance-grade, Honda aftermarket bearing (91002-K40-V01) ensures a smooth, high-RPM rotation that won't have you back on the bench within a month, replacing noisy, rattling, or seized lower-engine bearings.
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