

Original Honda PCX 125 Piston Kit Std (131A1-KWN-902) | 2012-2020
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Discover the ultimate upgrade for your motorcycle.
Designed with precision engineering, this offers unmatched performance and durability.
The Piston Kit Std (131A1-KWN-902) is the original replacement internal combustion component for the Honda PCX 125 (2012-2020), restoring the scooter's factory compression and oil control when the original piston is scored, heat-damaged, or suffering from ring-land wear. It ensures a perfect reciprocating balance within the cylinder, shields the engine from blow-by gases, and prevents the power loss and blue smoke associated with internal wear.
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.
- 131A1-KWN-902
_
- PCX125
- 2012
- 2013
- 2014
- 2015
- 2016
- 2017
- 2018
- 2019
- 2020
- Honda
- 125
- A
- PCX125
- NEW
Product Overview
This high-quality Original Piston Kit Std is designed to meet or exceed factory performance standards and is suitable for Honda PCX 125 (2012-2020) models.
The Piston Kit Std supplies a standard-bore piston together with its matched rings, circlips, and gudgeon pin, the moving group that converts combustion pressure into crankshaft motion. As mileage accumulates, piston skirts wear, ring lands erode, and ring tension drops, leading to compression loss, piston slap, increased oil consumption, and a noticeable fall in performance. This original replacement is manufactured to original factory specifications, restoring reliable performance to your Honda scooter.
- Brand New Original Piston Kit Std
- Part Number: 131A1-KWN-902
- Original replacement for Honda PCX 125 (2012-2020)
- Restores full cylinder compression and combustion sealing
- Helps reduce piston slap, blow-by, and oil consumption
- Direct fit, no modification required
- Recommended for engine top-end overhaul or when piston or ring wear is diagnosed
- 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 compression loss, piston slap, or worn piston and rings
• Replacing the Piston Kit Std during engine top-end overhaul or high-mileage rebuild
• Mechanics and workshops carrying out Honda engine top-end servicing
• Riders wanting to restore the original cylinder compression and engine power of their Honda scooters
• Anyone looking for a guaranteed original replacement for their Honda scooters
Complete Part Guide
The piston kit is the central reciprocating heart of your 2012-2020 Honda PCX125 engine, critical for maintaining the tight tolerances required for efficient combustion. Using a worn piston leads to "piston slap," increased oil consumption, and potential cylinder wall damage. This original Honda kit (131A1-KWN-902) provides the specific alloy expansion rates needed for reliable North London commuting. Stocked at Part Hive's London warehouse, order before 1 PM for guaranteed same-day UK dispatch.
We often see 2012-2020 Honda PCX-125s with "tired" top ends, usually characterized by a rattle during cold starts or smoke under heavy acceleration. In the demanding stop-start traffic of London commuting, the standard piston can develop carbon buildup in the ring grooves, leading to stuck rings and loss of compression. This original Honda Piston Kit Std (131A1-KWN-902) ensures a rattle-free stroke and maintains the vacuum seal needed to prevent the oil-burning issues that plague high-mileage engines using generic internal parts.
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