PISTON KIT 09-25 SX50 39.5mm B, PROX 01.6019.B
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Piston 2-stroke kit 39.50mm bore. 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. Meets or exceeds OEM quality. Direct OEM replacement. All products are factory tested for 100% reliability. Designed to handle increased power loads. ProX Racing products are a high quality replacement part. Piston rings, piston pin, piston clips included. SKU 56-W802.B.PX. Manufacturer Pro-X Racing. Part number 01.6019.B.
- SKU
- 56-W802.B.PX
- Brand
- Pro-X Racing
- Availability
- In Stock (1)
Fitments (31)
| Make | Model | Year |
|---|---|---|
| GASGAS | MC 50 | 2021 |
| GASGAS | MC 50 | 2022 |
| GASGAS | MC 50 | 2023 |
| GASGAS | MC 50 | 2024 |
| GASGAS | MC 50 | 2025 |
| HUSQVARNA | TC 50 | 2017 |
| HUSQVARNA | TC 50 | 2018 |
| HUSQVARNA | TC 50 | 2019 |
| HUSQVARNA | TC 50 | 2020 |
| HUSQVARNA | TC 50 | 2021 |
| HUSQVARNA | TC 50 | 2022 |
| HUSQVARNA | TC 50 | 2023 |
| HUSQVARNA | TC 50 | 2024 |
| HUSQVARNA | TC 50 | 2025 |
| KTM | 50 SX | 2009 |
| KTM | 50 SX | 2010 |
| KTM | 50 SX | 2011 |
| KTM | 50 SX | 2012 |
| KTM | 50 SX | 2013 |
| KTM | 50 SX | 2014 |
| KTM | 50 SX | 2015 |
| KTM | 50 SX | 2016 |
| KTM | 50 SX | 2017 |
| KTM | 50 SX | 2018 |
| KTM | 50 SX | 2019 |
| KTM | 50 SX | 2020 |
| KTM | 50 SX | 2021 |
| KTM | 50 SX | 2022 |
| KTM | 50 SX | 2023 |
| KTM | 50 SX | 2024 |
| KTM | 50 SX | 2025 |
- General Product Group
- Engine
- General Product Type
- Pistons & Kits
- General Size
- 39.5mm
- Variant Id
- 257811
FULL DESCRIPTION
ProX 39.5mm Piston Kit
This ProX Piston Kit is designed as a direct OEM replacement part, meeting or exceeding original equipment manufacturer quality standards. Each kit is supplied ready to install, including all necessary components: piston rings, wrist pin, and circlips for a complete solution.
ProX pistons are manufactured using precision machining on state-of-the-art CNC equipment. They utilize a low-expansion, low-friction piston alloy, consistent with the materials used by major Japanese engine manufacturers. The kit features an OEM-style tin coating, engineered to facilitate the break-in process during initial use.
This piston kit is engineered to handle increased power loads and has undergone factory testing to ensure 100% reliability. ProX Racing products are recognized for their high quality and are backed by a guarantee of satisfaction.
Key Features:
- Complete 2-Stroke Piston Kit
- 39.50mm Bore Size
- Includes Piston Rings, Wrist Pin, and Circlips
- Precision Machined on Latest CNC Equipment
- Low-Expansion, Low-Friction Piston Alloy
- OEM Style Tin Coating for Break-In Assistance
- Meets or Exceeds OEM Quality
- Direct OEM Replacement
- Designed for Increased Power Loads
- Factory Tested for 100% Reliability
QUESTIONS? JUST ASK
Talk to John or Phil. Real people, Monday to Friday, 10:00 to 17:00 (UK time).
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.
Yes. We ship from the UK. Orders ship within 3 working days, then delivery to the United States takes 5–8 business days. The delivery price is shown at checkout before you pay. 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.
Any customs duties or import taxes charged in the United States are paid by you when the parcel arrives. Any tax we collect ourselves is shown at checkout before you pay.
More answers in our FAQ.
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