The PROX 01.6226.B Piston Kit is a direct-replacement standard-size piston assembly designed for select 125cc Beta, Husqvarna, and KTM motorcycles equipped with Nikasil-plated cylinders. This complete kit includes the piston, piston rings, wrist pin, and retaining clips, providing the primary components needed for a reliable top-end rebuild while helping reduce replacement costs compared with OEM parts.
Designed for direct interchange with the original equipment components, this PROX piston kit supports proper fit and dependable performance when servicing a compatible engine. The standard 53.95 mm piston size is intended for applications using a standard-bore cylinder. Always inspect the cylinder condition, measure the bore, and verify piston-to-cylinder clearance before installation to confirm suitability for the specific engine.
Fitment includes 2014–2017 Husqvarna TC 125, 2014–2016 Husqvarna TE 125, and 2001–2003 KTM 125 EXC models. The kit may also fit select Beta applications depending on the motorcycle and engine configuration. Manufacturer part number 01.6226.B and vendor part number 19-6226B identify this PROX replacement kit. Confirm the year, model, cylinder type, and existing piston specifications before ordering.
- Feature: Complete piston kit includes piston, rings, wrist pin, and retaining clips
- Feature: Standard 53.95 mm size for compatible Nikasil-plated cylinders
- Feature: Direct interchange with applicable OEM piston components
- Feature: Helps reduce replacement costs compared with OEM pricing
Features:
- Complete piston kit includes piston, rings, wrist pin, and retaining clips
- Standard 53.95 mm size for compatible Nikasil-plated cylinders
- Direct interchange with applicable OEM piston components
- Helps reduce replacement costs compared with OEM pricing
- Fits select Husqvarna TC 125, Husqvarna TE 125, and KTM 125 EXC models
Fitment:
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
2007 KTM 125 SX
2008 KTM 125 Exc
2008 KTM 125 SX
2009 KTM 125 Exc
2009 KTM 125 SX
2010 KTM 125 Exc
2010 KTM 125 SX
2011 KTM 125 Exc
2011 KTM 125 SX
2012 KTM 125 Exc
2012 KTM 125 SX
2013 KTM 125 Exc
2013 KTM 125 SX
2014 Husqvarna TC 125
2014 Husqvarna TE 125
2014 KTM 125 Exc
2014 KTM 125 SX
2015 Husqvarna TC 125
2015 Husqvarna TE 125
2015 KTM 125 Exc
2015 KTM 125 SX
2016 Husqvarna TC 125
2016 Husqvarna TE 125
2016 KTM 125 Exc
2016 KTM 125 SX
2017 Husqvarna TC 125
2017 Husqvarna TX 125
2017 KTM 125 SX
2018 Beta 125 RR (2t)
2018 Husqvarna TC 125
2018 Husqvarna TX 125
2018 KTM 125 SX
2019 Beta 125 RR (2t)
2019 Husqvarna TC 125
2019 Husqvarna TX 125
2019 KTM 125 SX
2020 Beta 125 RR (2t)
2020 Husqvarna TC 125
2020 KTM 125 SX
2021 Beta 125 RR (2t)
2021 Gas-Gas Mc 125
2021 Husqvarna TC 125
2021 KTM 125 SX
2022 Beta 125 RR (2t)
2022 Gas-Gas Mc 125
2022 Husqvarna TC 125
2022 KTM 125 SX
2023 Beta 125 RR (2t)
2023 Gas-Gas Mc 125
2023 Husqvarna TC 125
2023 KTM 125 SX
2024 Beta 125 RR (2t)
2024 Gas-Gas Mc 125
2024 Husqvarna TC 125
2024 KTM 125 SX
2025 Beta 125 RR (2t)
2025 Gas-Gas Mc 125
2025 Husqvarna TC 125
2025 KTM 125 SX