Vertex 39.47mm Piston Kit – KTM 50 SX / TC 50 / MC 50 2-Stroke (2009-2024)
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- 30-day hassle-free returns
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Vertex Cast Replica Piston Kit – 39.47mm for KTM 50 SX / TC 50 / MC 50
OEM-Style 2-Stroke Piston for 50cc Mini Bikes
🔧 Factory-Spec Performance, Race-Ready Reliability
This Vertex Cast Replica Piston Kit is the ultimate OE-style solution for rebuilding your 50cc 2-stroke. Designed with gravity-cast aluminum alloy containing 18% silicone and a molybdenum disulfide-coated skirt, this piston delivers smooth break-in and long-lasting durability—perfect for parents and racers who want to keep their mini machines running like new.
📦 What’s Included:
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Cast Piston (39.47mm)
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Piston Rings
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Wrist Pin
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Circlips
🚀 Key Features:
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Heat-Treated Aluminum Alloy: Gravity-cast with 18% silicone for strength and longevity
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Molybdenum Coated Skirt: Reduces friction, speeds break-in, extends lifespan
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OEM Replacement: Reliable fit and compression for stock cylinder setups
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2-Stroke Specific Design: Built to meet the demands of high-RPM mini bikes
✅ Vehicle Compatibility:
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GasGas MC 50: 2021–2024
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Husqvarna TC 50: 2017–2024
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Husqvarna TC 50 Mini: 2018–2019
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KTM 50 SX: 2009–2024
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KTM 50 SX Mini: 2009–2023
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KTM 50 SXS: 2011–2014
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KTM 50 SX Pro Junior: 2009
🛠 Why Choose Vertex?
Vertex pistons are trusted worldwide for their consistent quality and tight OEM tolerances. Whether you're racing or just rebuilding for regular use, this kit provides factory-level performance without the factory price.
📦 Shipping Information
In-stock items ship next business day. ModQuad parts dispatch Monday through Thursday.
Made-to-order and custom powder coat items show their lead time at the top of this page, right next to the truck icon. These are built fresh for you, so timing varies by brand and current backlog.
Need something by a specific date? Call us at 541-668-7503 before ordering and we will check stock and ETA on that exact part. We can often point you to an in-stock alternative from another distributor.
Questions? Contact us, we respond within 24 hours.
