PISTON KIT 07-25 KTM SX125 54, PROX 01.6226.E 503.30.207.100, Made in Japan
4.1 Trustpilot 99.9% positive on eBay
Free UK delivery 2–4 business days
Spread the cost with 18+, T&Cs apply
ProX Piston Kit 54.00mm Bore. Made in Japan. Ready to install, ProX Piston Kits are supplied complete with piston rings, wrist pin, and circlips. ProX pistons are precision machined on the latest CNC equipment and use the same low-expansion, low-friction piston alloy all major Japanese engine manufacturers use. Uses an OEM style tin coating to assist the break-in process. PROX 01.6226.E.
- SKU
- 56-W035.E.PX
- Brand
- Pro-X Racing
- Availability
- In Stock (2)
Fitments (84)
| Make | Model | Year |
|---|---|---|
| BETA | RR ENDURO 2T 125 | 2018 |
| BETA | RR ENDURO 2T 125 | 2019 |
| BETA | RR ENDURO 2T 125 | 2020 |
| BETA | RR ENDURO 2T 125 | 2021 |
| BETA | RR ENDURO 2T 125 | 2022 |
| BETA | RR ENDURO 2T 125 | 2023 |
| BETA | RR ENDURO 2T 125 | 2024 |
| BETA | RR ENDURO 2T 125 | 2025 |
| GASGAS | MC 125 | 2021 |
| GASGAS | MC 125 | 2022 |
| GASGAS | MC 125 | 2023 |
| GASGAS | MC 125 | 2024 |
| GASGAS | MC 125 | 2025 |
| HUSABERG | TE 125 | 2012 |
| HUSABERG | TE 125 | 2013 |
| HUSABERG | TE 125 | 2014 |
| HUSABERG | TE 125 | 2015 |
| HUSQVARNA | TC 125 | 2014 |
| HUSQVARNA | TC 125 | 2015 |
| HUSQVARNA | TC 125 | 2016 |
| HUSQVARNA | TC 125 | 2017 |
| HUSQVARNA | TC 125 | 2018 |
| HUSQVARNA | TC 125 | 2019 |
| HUSQVARNA | TC 125 | 2020 |
| HUSQVARNA | TC 125 | 2021 |
| HUSQVARNA | TC 125 | 2022 |
| HUSQVARNA | TC 125 | 2023 |
| HUSQVARNA | TC 125 | 2024 |
| HUSQVARNA | TC 125 | 2025 |
| HUSQVARNA | TE 125 | 2014 |
| HUSQVARNA | TE 125 | 2015 |
| HUSQVARNA | TE 125 | 2016 |
| HUSQVARNA | TE 125 | 2017 |
| HUSQVARNA | TE 125 | 2018 |
| HUSQVARNA | TE 125 | 2019 |
| HUSQVARNA | TE 125 | 2020 |
| HUSQVARNA | TX 125 | 2017 |
| HUSQVARNA | TX 125 | 2018 |
| HUSQVARNA | TX 125 | 2019 |
| HUSQVARNA | TX 125 | 2020 |
| KTM | 125 EXC | 2001 |
| KTM | 125 EXC | 2002 |
| KTM | 125 EXC | 2003 |
| KTM | 125 EXC | 2004 |
| KTM | 125 EXC | 2005 |
| KTM | 125 EXC | 2006 |
| KTM | 125 EXC | 2007 |
| KTM | 125 EXC | 2008 |
| KTM | 125 EXC | 2009 |
| KTM | 125 EXC | 2010 |
| KTM | 125 EXC | 2011 |
| KTM | 125 EXC | 2012 |
| KTM | 125 EXC | 2013 |
| KTM | 125 EXC | 2014 |
| KTM | 125 EXC | 2015 |
| KTM | 125 EXC | 2016 |
| KTM | 125 SX | 2001 |
| KTM | 125 SX | 2002 |
| KTM | 125 SX | 2003 |
| KTM | 125 SX | 2004 |
| KTM | 125 SX | 2005 |
| KTM | 125 SX | 2006 |
| KTM | 125 SX | 2007 |
| KTM | 125 SX | 2008 |
| KTM | 125 SX | 2009 |
| KTM | 125 SX | 2010 |
| KTM | 125 SX | 2011 |
| KTM | 125 SX | 2012 |
| KTM | 125 SX | 2013 |
| KTM | 125 SX | 2014 |
| KTM | 125 SX | 2015 |
| KTM | 125 SX | 2016 |
| KTM | 125 SX | 2017 |
| KTM | 125 SX | 2018 |
| KTM | 125 SX | 2019 |
| KTM | 125 SX | 2020 |
| KTM | 125 SX | 2021 |
| KTM | 125 SX | 2022 |
| KTM | 125 SX | 2023 |
| KTM | 125 SX | 2024 |
| KTM | 125 SX | 2025 |
| KTM | 125 XC-W | 2017 |
| KTM | 125 XC-W | 2018 |
| KTM | 125 XC-W | 2019 |
- General Product Group
- Engine
- General Product Type
- Pistons & Kits
- Variant Id
- 254341
FULL DESCRIPTION
ProX 54mm Piston Kit - Precision Engineered for Performance
This ProX Piston Kit is designed for high-performance 2-stroke engines, featuring a 54.00mm bore for optimal power delivery. Manufactured in Japan, ProX pistons are renowned for their quality and reliability, utilizing a low-expansion, low-friction piston alloy favored by major Japanese engine manufacturers.
Each kit is supplied ready for immediate installation and includes all necessary components: piston rings, wrist pin, and circlips. The piston features an OEM-style tin coating, specifically applied to aid the crucial break-in process for your machine's initial use, ensuring longevity and smooth operation.
Key Features:
- Piston Bore Size: 54.00mm
- Type: 2-Stroke Piston Kit
- Manufacturing Origin: Made in Japan
- Included Components: Piston Rings, Wrist Pin, Circlips
- Material: Low-expansion, low-friction alloy
- Coating: OEM-style tin coating for enhanced break-in
- Precision Machining: Utilizes state-of-the-art CNC equipment
QUESTIONS? JUST ASK
Talk to John or Phil. Real people, Monday to Friday, 10:00 to 17:00.
Check the fitment table on this page against your make, model and year. Not sure? Call or email us and we will check it for you before you order.
UK delivery is £4.99, or free on orders over £60. Orders ship within 3 working days, then delivery takes 2–4 business days. Delivery details
Yes. You have 14 days from delivery to return it, unused and in its original packaging. Contact us first and we will send you the return instructions. Returns policy
By card, PayPal, Apple Pay or Google Pay, or spread the cost with Klarna. Payment is taken securely by Stripe, and the options for your order are shown at checkout.
More answers in our FAQ.
Trade pricing available
Buying parts for your business? Apply for a 2BrosParts trade account.


