

Original Honda PCX 125 Exhaust Pipe Gasket (18291-GE2-921) | 2012-2025
Running a Workshop or Delivery Fleet? Unlock Up to 75% Trade Discount.
Discover the ultimate upgrade for your motorcycle.
Designed with precision engineering, this offers unmatched performance and durability.
The Exhaust Pipe Gasket (18291-GE2-921) is the original Honda copper-composite crush seal for the exhaust manifold on the Honda PCX 125 (2012-2025). This component is designed to deform slightly upon installation, creating a gas-tight seal between the cylinder head and the exhaust downpipe to prevent performance-robbing leaks and excessive noise.
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.
- 18291-GE2-921
_
- PCX125
- 2012
- 2013
- 2014
- 2015
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- Honda
- 125
- PCX125
- NEW
Product Overview
This high-quality Original Exhaust Pipe Gasket is designed to meet or exceed factory performance standards and is suitable for Honda SH Mode 125 (2014-2025), Forza 125 (2015-2025), CB125F (2015-2025), SH125i (2013-2025), SH150i (2013-2025), and PCX125 (2012-2025) models.
The Exhaust Pipe Gasket creates a high-temperature gas-tight seal between the exhaust pipe header and the engine cylinder head, preventing hot exhaust gases from escaping at the joint. When the gasket burns out, deteriorates, or is compressed beyond its service life, it allows exhaust gases to leak at the header connection, producing a distinctive ticking or popping noise, reducing engine back pressure, and allowing carbon deposits to build up around the exhaust port. This original replacement is manufactured to original factory specifications, restoring a reliable exhaust gas seal in your Honda motorcycles.
- Brand New Original Exhaust Pipe Gasket
- Part Number: 18291-GE2-921
- Original replacement for Honda SH Mode 125 (2014-2025), Forza 125 (2015-2025), CB125F (2015-2025), SH125i (2013-2025), SH150i (2013-2025), and PCX125 (2012-2025)
- Creates a reliable gas-tight seal between the exhaust pipe and cylinder head, withstanding high exhaust temperatures
- Eliminates exhaust gas leaks, ticking noise, and carbon build-up caused by a blown or worn exhaust gasket
- Direct fit, no modification required
- Recommended for replacement during exhaust system removal or whenever an exhaust gas leak or ticking noise at the header joint is detected
- 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 SH Mode 125, Forza 125, CB125F, SH125i, SH150i, and PCX125 owners with exhaust gas leaks, ticking noise at the header joint, or carbon build-up caused by a blown or worn exhaust pipe gasket
• Replacing the Exhaust Pipe Gasket during exhaust pipe removal, header service, or engine top-end work
• Mechanics and workshops carrying out Honda exhaust system and cylinder head servicing
• Riders wanting to restore a gas-tight exhaust seal and eliminate header noise on their Honda motorcycles
• Anyone looking for a guaranteed original replacement for their Honda SH Mode 125, Forza 125, CB125F, SH125i, SH150i, or PCX125
Complete Part Guide
The exhaust pipe gasket on your Honda PCX125 2012-2025 is the vital barrier that keeps hot combustion gases from escaping the engine at the manifold. A failing gasket often results in a distinct "ticking" sound or a loud popping on deceleration, which can eventually lead to burnt exhaust valves. This original Honda replacement (18291-GE2-921) is specifically weighted for the 2012-2025 header flange. In stock at Part Hive's London warehouse, order before 1 PM for guaranteed same-day UK dispatch.
A blowing exhaust at the head is a frequent diagnosis in our workshop, usually caused by the 18291-GE2-921 gasket being reused or an aftermarket part failing to crush correctly. Once the seal is compromised, the escaping hot air can melt nearby plastics or damage the manifold studs through vibration and heat fatigue. When fitting a new exhaust or performing engine work, we always recommend replacing with a fresh gasket because the original copper-ring design is a "one-use" component meant to seat perfectly against the head. This original Honda PCX-125 (2012-2025) Exhaust Gasket provides the exact crush-rate and thermal durability needed to restore a silent and efficient exhaust system, replacing leaking, blowing, or flattened manifold seals.
You may also like
Get the Right Parts for Your Ride with Part Hive
Finding the perfect part for your motorcycle is easy with Part Hive. Here’s how we make it simple for you:
Wide Selection
From brakes and suspension to mirrors and body fairings, we stock parts for all major motorcycle brands and models.
Easy Fit
Use our filters or search tools to quickly locate parts compatible with your make, model, and year.
Trusted Quality
All our parts are sourced from reliable manufacturers, including high-quality aftermarket options.
Fast Delivery
Order online and get your parts delivered quickly, so you can get back on the road without delay.
Part Hive FAQ
Your Guide to Smooth Rides
How do I add a part to my cart?
Simply select the correct part for your motorcycle (make, model, year), then click the ‘Add to Cart’ button. The item will be added to your cart, and you can continue shopping or proceed to checkout.
Can I change the quantity of a part before checkout?
Yes! After adding a part to your cart, you can adjust the quantity directly in your cart page.
What if I accidentally add the wrong part to my cart?
No problem! You can remove any item from your cart by clicking the ‘Remove’ button next to the quantity. You can then add the correct part if needed.
Can I save items in my cart for later?
Yes. Items in your cart are automatically saved for logged-in customers for a limited time. You can also create a Wishlist or favourites list to save items for future purchases.
