Namura NX-40009-CK2 Top End Repair Kit 53.97mm for Fantic & Yamaha
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The Namura NX-40009-CK2 Top End Repair Kit 53.97mm is an application-specific engine component for Fantic & Yamaha. It is designed for the verified year, make and model combinations listed below.
Key Features
- Includes a piston, rings, wrist pin, clips and application-specific top-end gasket components
- MOS2-coated piston skirt helps reduce friction during break-in
- Machined crown and anodized dome are designed for heat resistance and reduced carbon buildup
- Fitment detail: Piston diameter: 53.97 mm
- Fitment detail: Piston diameter: 53.97 mm; Use matching Namura piston and rings; not interchangeable with OEM piston/rings
Manufacturer: Namura
Part Number: NX-40009-CK2
Vehicle Fitment
| Year | Make | Model | Fitment Notes |
|---|---|---|---|
| 2022-2023 | Fantic | XE 125 | Piston diameter: 53.97 mm |
| 2022-2023 | Fantic | XX 125 | Piston diameter: 53.97 mm |
| 2022-2026 | Yamaha | YZ125 | Piston diameter: 53.97 mm; Use matching Namura piston and rings; not interchangeable with OEM piston/rings |
| 2023-2026 | Yamaha | YZ125X | Piston diameter: 53.97 mm; Use matching Namura piston and rings; not interchangeable with OEM piston/rings |
Fitment note: Match the year, make, model and any listed specifications to your machine before ordering. Professional installation is recommended for internal engine components.
Shipping & Returns
- Most orders process within 1 business day.
- 30-day returns on new, unused items.
Once your Steel Steeds gear leaves our warehouse, it typically arrives at your doorstep within 2–4 business days, unless otherwise noted. We partner with trusted shipping carriers to ensure your off-road essentials get to you fast and hassle-free. So gear up with confidence—your next big adventure is just around the corner!
Changed your mind? No problem. Most new, unused, and uninstalled items can be returned within 30 days of delivery.
We do not charge a standard restocking fee. Customers are responsible for return shipping unless the item arrived damaged, defective, or incorrect.
Items must be returned in original packaging and in resalable condition.
We are committed to providing quality products and stand behind our items with a warranty. Exact coverage may vary, so please refer to our warranty page for more details!
