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The Hot Rods K066 Main Bearing and Seal Kit is designed for rebuilding compatible KTM 300 two-stroke engines. This kit supports reliable crankshaft service and is intended for riders, technicians, and builders restoring engine performance on select KTM 300 XC and 300 XC-W models.
As part of the Hot Rods rebuildable engine system, the kit is intended for use with a trued Hot Rods crankshaft assembly that is ready to install after the appropriate main bearings and seals have been fitted. The K066 kit provides the essential components needed to complete crankshaft installation and helps ensure proper sealing and bearing support during engine operation. Verify the specific crankshaft and engine configuration before installation.
Fitment: Fits 2006–2012 and 2014 KTM 300 XC models, plus 2006–2007 KTM 300 XC-W models. This Hot Rods kit is manufacturer part number K066 and vendor part number 421-K066. Professional installation and careful inspection of all mating surfaces, clearances, and related engine components are recommended.
Features:
- Completely rebuildable design for compatible KTM 300 engine applications
- Designed for use with Hot Rods crankshaft assemblies
- Supports installation of main bearings and seals during engine rebuilding
- Compatible with selected KTM 300 XC and XC-W models
- Manufacturer part number: K066
- Vendor part number: 421-K066
Fitment:
2003 KTM 250 SX
2003 KTM 250 SXS
2004 KTM 250 EXC
2004 KTM 250 SX
2004 KTM 250 SXS
2004 KTM 300 EXC
2004 KTM 300 MXC
2005 KTM 250 EXC
2005 KTM 250 SX
2005 KTM 300 EXC
2005 KTM 300 MXC
2006 KTM 250 SX
2006 KTM 250 XC
2006 KTM 250 XC-W
2006 KTM 300 EXC
2006 KTM 300 XC
2006 KTM 300 XC-W
2007 KTM 250 SX
2007 KTM 250 XC
2007 KTM 250 XC-W
2007 KTM 300 EXC
2007 KTM 300 XC
2007 KTM 300 XC-W
2008 KTM 250 EXC
2008 KTM 250 SX
2008 KTM 250 XC
2008 KTM 250 XC-W
2008 KTM 300 EXC
2008 KTM 300 XC
2008 KTM 300 XC-W
2009 KTM 250 SX
2009 KTM 250 XC
2009 KTM 250 XC-W
2009 KTM 300 XC
2009 KTM 300 XC-W
2010 KTM 250 SX
2010 KTM 250 XC
2010 KTM 250 XC-W
2010 KTM 300 XC
2010 KTM 300 XC-W
2011 KTM 250 SX
2011 KTM 250 XC
2011 KTM 250 XC-W
2011 KTM 300 XC
2011 KTM 300 XC-W
2012 KTM 250 SX
2012 KTM 250 XC
2012 KTM 250 XC-W
2012 KTM 300 XC
2012 KTM 300 XC-W
2013 KTM 250 SX
2013 KTM 250 XC
2013 KTM 250 XC-W
2013 KTM 300 XC
2013 KTM 300 XC-W
2014 Husqvarna TC 250
2014 Husqvarna TE 250
2014 Husqvarna TE 300
2014 KTM 250 SX
2014 KTM 250 XC
2014 KTM 250 XC-W
2014 KTM 300 XC
2014 KTM 300 XC-W
2015 Husqvarna TC 250
2015 Husqvarna TE 250
2015 Husqvarna TE 300
2015 KTM 250 SX
2015 KTM 250 XC
2015 KTM 250 XC-W
2015 KTM 300 XC
2015 KTM 300 XC-W
2015 KTM Freeride 250R 4-Stroke
2016 Husqvarna TC 250
2016 Husqvarna TE 250
2016 Husqvarna TE 300
2016 KTM 250 SX
2016 KTM 250 XC
2016 KTM 250 XC-W
2016 KTM 300 XC
2016 KTM 300 XC-W
2016 KTM Freeride 250R 4-Stroke
2017 Husqvarna TC 250
2017 Husqvarna TE 250
2017 Husqvarna TE 300
2017 Husqvarna TX 300
2017 KTM 250 EXC
2017 KTM 250 SX
2017 KTM 250 XC
2017 KTM 250 XC-W
2017 KTM 300 EXC
2017 KTM 300 XC
2017 KTM 300 XC-W
2017 KTM Freeride 250R 4-Stroke
2018 Husqvarna TC 250
2018 Husqvarna TE 250
2018 Husqvarna TE 250i
2018 Husqvarna TE 300
2018 Husqvarna TE 300i
2018 Husqvarna TX 300
2018 KTM 250 EXC
2018 KTM 250 EXC TPi
2018 KTM 250 SX
2018 KTM 250 XC
2018 KTM 250 XC-W
2018 KTM 250 XC-W TPi
2018 KTM 300 XC
2018 KTM 300 XC-W
2019 Husqvarna TC 250
2019 Husqvarna TE 250i
2019 Husqvarna TE 300i
2019 Husqvarna TX 300
2019 KTM 250 SX
2019 KTM 250 XC
2019 KTM 250 XC-W TPi
2019 KTM 300 XC
2019 KTM 300 XC-W TPi
2020 Husqvarna TC 250
2020 Husqvarna TE 250i
2020 Husqvarna TE 300i
2020 Husqvarna TX 300i
2020 KTM 250 EXC TPi
2020 KTM 250 SX
2020 KTM 250 XC TPi
2020 KTM 250 XC-W TPi
2020 KTM 300 EXC TPi
2020 KTM 300 XC TPi
2020 KTM 300 XC-W TPi
2020 KTM 300 XC-W TPI ERZBERGRODEO
2021 Gas-Gas EC 250
2021 Gas-Gas EC 300
2021 Gas-Gas EX 300
2021 Husqvarna TC 85 (17/14)
2021 Husqvarna TC 85 (19/16)
2021 Husqvarna TE 250i
2021 Husqvarna TE 300i
2021 Husqvarna TE 300i Rockstar Edition
2021 Husqvarna TX 300i
2021 KTM 250 EXC TPi
2021 KTM 250 SX
2021 KTM 250 XC TPi
2021 KTM 250 XC-W TPi
2021 KTM 300 XC TPi
2021 KTM 300 XC-W TPi
2022 Gas-Gas EC 250
2022 Gas-Gas EC 300
2022 Gas-Gas EX 250
2022 Gas-Gas EX 300
2022 Husqvarna TC 250
2022 Husqvarna TE 300i Rockstar Edition
2022 KTM 250 SX
2022 KTM 250 XC TPi
2022 KTM 300 EXC
2022 KTM 300 XC-W TPI ERZBERGRODEO
2023 Gas-Gas EC 250
2023 Gas-Gas EC 300
2023 Gas-Gas EX 250
2023 Gas-Gas EX 300
2023 Gas-Gas Mc 250
2023 Husqvarna TC 250
2023 Husqvarna TC 250 Heritage
2023 Husqvarna TE 250 Heritage
2023 Husqvarna TE 300 Heritage
2023 Husqvarna TE 300i
2023 Husqvarna TX 300 Heritage
2023 Husqvarna TX 300i
2023 KTM 250 EXC
2023 KTM 250 EXC TPi
2023 KTM 250 SX
2023 KTM 250 XC
2023 KTM 250 XC-W
2023 KTM 300 SX
2023 KTM 300 XC
2023 KTM 300 XC-W
2024 Gas-Gas EC 250
2024 Gas-Gas EC 300
2024 Gas-Gas EX 250
2024 Gas-Gas EX 300
2024 Gas-Gas Mc 250
2024 Husqvarna TC 250
2024 Husqvarna TE 250
2024 Husqvarna TE 300 Pro
2024 Husqvarna TE 300i
2024 Husqvarna TX 300i
2024 KTM 250 EXC
2024 KTM 250 EXC TPi
2024 KTM 250 SX
2024 KTM 250 XC
2024 KTM 250 XC-W
2024 KTM 300 SX
2024 KTM 300 XC
2024 KTM 300 XC-W
2024 KTM EXC 300 HARDENDURO
2024 KTM XC-W 300 HARDENDURO
2025 Gas-Gas EC 250
2025 Gas-Gas EC 300
2025 Gas-Gas EX 250
2025 Gas-Gas EX 300
2025 Gas-Gas Mc 250
2025 Gas-Gas MC 300
2025 Husqvarna TC 250
2025 Husqvarna TC 250 Heritage
2025 Husqvarna TC 300
2025 Husqvarna TC 300 Heritage
2025 Husqvarna TE 250
2025 Husqvarna TE 250 Heritage
2025 Husqvarna TE 300 Heritage
2025 Husqvarna TE 300 Pro
2025 Husqvarna TE 300i
2025 Husqvarna TX 300 Heritage
2025 Husqvarna TX 300i
2025 KTM 250 EXC
2025 KTM 250 EXC TPi
2025 KTM 250 SX
2025 KTM 250 XC
2025 KTM 250 XC-W
2025 KTM 300 EXC
2025 KTM 300 SX
2025 KTM 300 XC
2025 KTM 300 XC-W
2025 KTM EXC 250 Champion Edition
2025 KTM EXC 300 Champion Edition
2025 KTM EXC 300 HARDENDURO
2025 KTM XC-W 300 Champion Edition
2025 KTM XC-W 300 Factory Edition
2025 KTM XC-W 300 HARDENDURO