All Balls Racing 18-4000 Clutch Master Cylinder Rebuild Kit for GasGas EX300 and KTM Powersports Models

All Balls Racing Clutch Master Cylinder Rebuild Kits contain all of the components to re-seal leaking cylinders. Kits feature replacement hard anodized aluminum piston, replacement cover screws, boots and springs.

Restore dependable clutch master cylinder performance with the All Balls Racing 18-4000 Clutch Master Cylinder Rebuild Kit. Designed to help repair leaking or worn master cylinders, this kit provides the essential components needed to reseal the assembly and support consistent hydraulic clutch operation. It is a practical service solution for powersports applications requiring reliable replacement components.

The kit includes a replacement hard-anodized aluminum piston, cover screws, boots, and springs. These components are designed to replace commonly worn or damaged internal and external parts, helping protect the hydraulic system from leaks and contamination. The All Balls Racing 18-4000 kit is suited for maintenance and repair work on compatible GasGas and KTM motorcycles.

Fitment includes the 2006 KTM 250 SX, 250 XC, 250 XCF-W, 250 XC-W, 300 XC, 300 XC-W, and 450 XC-W, along with the 2007 KTM 250 SX, 250 SX-F, and 250 XC. Always verify the motorcycle model, year, and existing master cylinder configuration before installation. Professional installation or reference to the vehicle service manual is recommended for proper assembly, bleeding, and clutch system operation.

What's Included

• Replacement hard-anodized aluminum piston
• Replacement cover screws
• Replacement boots
• Replacement springs

Features:

• Master Cylinder Rebuild Kit: Provides components needed to reseal a leaking or worn clutch master cylinder.
• Hard-Anodized Aluminum Piston: Replaces the original piston with a durable component designed for dependable hydraulic service.
• Complete Service Components: Includes cover screws, boots, and springs to support a thorough master cylinder rebuild.
• Broad Powersports Fitment: Fits select GasGas and KTM motorcycle applications, including compatible EX300 and KTM models.

Fitments:
2006 KTM 250 SX Base
2006 KTM 250 XC Base
2006 KTM 250 XC-W Base
2006 KTM 250 XCF-W Base
2006 KTM 300 EXC Base
2006 KTM 300 XC Base
2006 KTM 300 XC-W Base
2006 KTM 450 XC-W Base
2007 KTM 250 SX Base
2007 KTM 250 SX-F Base
2007 KTM 250 XC Base
2007 KTM 250 XC-F Base
2007 KTM 250 XC-W Base
2007 KTM 250 XCF-W Base
2007 KTM 300 EXC Base
2007 KTM 300 XC Base
2007 KTM 300 XC-W Base
2007 KTM 450 EXC Base
2007 KTM 450 XC-W Base
2007 KTM 525 Exc Base
2008 KTM 250 EXC Base
2008 KTM 250 SX Base
2008 KTM 250 SX-F Base
2008 KTM 250 XC Base
2008 KTM 250 XC-F Base
2008 KTM 250 XC-W Base
2008 KTM 250 XCF-W Base
2008 KTM 300 XC Base
2008 KTM 300 XC-W Base
2008 KTM 450 EXC-R Base
2008 KTM 450 XC-W Base
2008 KTM 530 Exc-R Base
2009 KTM 250 SX Base
2009 KTM 250 SX-F Base
2009 KTM 250 XC Base
2009 KTM 250 XC-F Base
2009 KTM 250 XC-W Base
2009 KTM 250 XCF-W Base
2009 KTM 300 XC Base
2009 KTM 300 XC-W Base
2009 KTM 400 Xc-W Base
2009 KTM 450 EXC Base
2009 KTM 450 XC-W Base
2009 KTM 530 Xc-W Base
2010 KTM 250 SX Base
2010 KTM 250 SX-F Base
2010 KTM 250 XC Base
2010 KTM 250 XC-F Base
2010 KTM 250 XC-W Base
2010 KTM 250 XCF-W Base
2010 KTM 300 XC Base
2010 KTM 300 XC-W Base
2010 KTM 400 Xc-W Base
2010 KTM 450 EXC Base
2010 KTM 450 XC-W Base
2010 KTM 530 Xc-W Base
2011 KTM 250 SX Base
2011 KTM 250 SX-F Base
2011 KTM 250 XC Base
2011 KTM 250 XC-F Base
2011 KTM 250 XC-W Base
2011 KTM 250 XCF-W Base
2011 KTM 300 XC Base
2011 KTM 300 XC-W Base
2011 KTM 350 SX-F Base
2011 KTM 350 XC-F Base
2011 KTM 450 EXC Base
2011 KTM 450 XC-W Base
2011 KTM 530 Xc-W Base
2012 KTM 250 SX Base
2012 KTM 250 SX-F Base
2012 KTM 250 XC Base
2012 KTM 250 XC-F Base
2012 KTM 250 XC-W Base
2012 KTM 250 XCF-W Base
2012 KTM 300 XC Base
2012 KTM 350 SX-F Base
2012 KTM 350 XC-F Base
2012 KTM 350 XCF-W Base
2012 KTM 450 EXC Base
2012 KTM 450 XC-W Base
2012 KTM 500 EXC Base
2012 KTM 500 XC-W Base
2013 KTM 250 SX Base
2013 KTM 250 SX-F Base
2013 KTM 250 XC Base
2013 KTM 250 XC-F Base
2013 KTM 250 XC-W Base
2013 KTM 250 XCF-W Base
2013 KTM 300 XC Base
2013 KTM 350 SX-F Base
2013 KTM 350 XC-F Base
2013 KTM 350 XCF-W Base
2013 KTM 450 EXC Base
2013 KTM 450 SX-F Base
2013 KTM 450 XC-F Base
2013 KTM 450 XC-W Base
2013 KTM 500 EXC Base
2013 KTM 500 XC-W Base
2014 Husqvarna FC250 Base
2014 Husqvarna FC350 Base
2014 Husqvarna FC450 Base
2014 Husqvarna FE350 Base
2014 Husqvarna FE450 Base
2014 Husqvarna FE501 Base
2014 KTM 250 SX Base
2014 KTM 250 SX-F Base
2014 KTM 250 XC Base
2014 KTM 250 XC-F Base
2014 KTM 250 XC-W Base
2014 KTM 250 XCF-W Base
2014 KTM 300 XC Base
2014 KTM 350 SX-F Base
2014 KTM 350 XC-F Base
2014 KTM 350 XCF-W Base
2014 KTM 450 EXC Base
2014 KTM 450 SX-F Base
2014 KTM 450 XC-F Base
2014 KTM 450 XC-W Base
2014 KTM 500 EXC Base
2014 KTM 500 XC-W Base
2015 Husqvarna FC250 Base
2015 Husqvarna FC350 Base
2015 Husqvarna FC450 Base
2015 Husqvarna FE350 Base
2015 Husqvarna FE350S Base
2015 Husqvarna FE450 Base
2015 Husqvarna FE501 Base
2015 Husqvarna FE501S Base
2015 KTM 250 SX Base
2015 KTM 250 SX-F Base
2015 KTM 250 XC Base
2015 KTM 250 XC-F Base
2015 KTM 250 XC-W Base
2015 KTM 250 XCF-W Base
2015 KTM 300 XC Base
2015 KTM 300 XC-W Six Days Base
2015 KTM 350 SX-F Base
2015 KTM 350 XC-F Base
2015 KTM 350 XCF-W Base
2015 KTM 350 XCF-W Six Days Base
2015 KTM 450 SX-F Base
2015 KTM 450 SX-F Factory Edition Base
2015 KTM 450 XC-F Base
2015 KTM 450 XC-W Base
2015 KTM 500 EXC Base
2015 KTM 500 XC-W Base
2016 Husqvarna FE350 Base
2016 Husqvarna FE350S Base
2016 Husqvarna FE450 Base
2016 Husqvarna FE501 Base
2016 Husqvarna FE501S Base
2016 Husqvarna TC250 Base
2016 KTM 250 SX Base
2016 KTM 250 XC Base
2016 KTM 250 XC-W Base
2016 KTM 250 XCF-W Base
2016 KTM 300 XC Base
2016 KTM 300 XC-W Six Days Base
2016 KTM 350 XCF-W Base
2016 KTM 350 XCF-W Six Days Base
2016 KTM 450 SX-F Base
2016 KTM 450 SX-F Factory Edition Base
2016 KTM 450 XC-F Base
2016 KTM 450 XC-W Base
2016 KTM 500 EXC Base
2016 KTM 500 EXC Six Days Base
2016 KTM 500 XC-W Base
2017 Husqvarna TC250 Base
2017 KTM 250 EXC-F Base
2017 KTM 250 SX Base
2017 KTM 250 XC Base
2017 KTM 300 XC Base
2017 KTM 450 EXC-F Six Days Base
2017 KTM 450 SX-F Base
2017 KTM 450 SX-F Factory Edition Base
2017 KTM 500 EXC-F Base
2018 KTM 250 EXC-F Base
2018 KTM 250 SX Base
2018 KTM 250 XC Base
2018 KTM 250 XC-W TPi Base
2018 KTM 300 XC Base
2018 KTM 450 EXC-F Six Days Base
2018 KTM 450 SX-F Base
2018 KTM 450 SX-F Factory Edition Base
2018 KTM 500 EXC-F Base
2019 KTM 250 EXC-F Base
2019 KTM 250 SX Base
2019 KTM 250 XC Base
2019 KTM 250 XC-W TPi Base
2019 KTM 300 XC Base
2019 KTM 300 XC-W TPi Base
2019 KTM 350 SX-F Base
2019 KTM 450 EXC-F Six Days Base
2019 KTM 450 SX-F Base
2019 KTM 450 SX-F Factory Edition Base
2019 KTM 500 EXC-F Base
2020 KTM 150 XC-W TPi Base
2020 KTM 250 SX Base
2020 KTM 250 XC TPi Base
2020 KTM 250 XC-W TPi Base
2020 KTM 300 XC TPi Base
2020 KTM 300 XC-W TPi Base
2020 KTM 350 SX-F Base
2020 KTM 350 XCF-W Base
2020 KTM 450 SX-F Base
2020 KTM 500 EXC-F Base
2020 KTM 500 EXC-F Six Days Base
2021 Gas Gas EX 300 Base
2021 Gas Gas MC 450F Base
2021 KTM 150 XC-W TPi Base
2021 KTM 250 XC TPi Base
2021 KTM 250 XC-W TPi Base
2021 KTM 300 XC TPi Base
2021 KTM 300 XC-W TPi Base
2021 KTM 350 XCF-W Base
2021 KTM 450 SX-F Base
2021 KTM 450 XC-F Base
2021 KTM 500 EXC-F Base
2022 Gas Gas EX 300 Base
2022 Gas Gas MC 450F Base
2022 Husqvarna FC450 Base
2022 KTM 250 XC TPi Base
2022 KTM 250 XC-W TPi Base
2022 KTM 300 XC TPi Base
2022 KTM 300 XC-W TPi Base
2022 KTM 350 XCF-W Base
2022 KTM 450 SX-F Base
2022 KTM 450 XC-F Base
2022 KTM 500 EXC-F Base
2024 Kawasaki KX450X Base
2024 Triumph TF 250-X Base

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Unknown
Part Type: powersports
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Clearance Item: t
Units Per Sku: 1