SKU:109444
Excellent economic alternative when you are looking for an OEM quality replacement piston
Mainly manufactured in Japan by reputable Original Equipment Manufacturers to ProX exact specifications and high quality standards
Sleeved cylinder piston kits are available in standard size and a Wide range of oversizes
Plated cylinder piston kits come in standard size, as well as in A, B, C and D oversizes if available
ProX leads the industry in cast and forged pistons made specifically to replace OEM parts
Comes complete with pistons, piston rings, wrist pin and circlips
Restore dependable engine performance with the PROX 01.6429.B Piston Kit, designed for KTM 450 EXC-R models from 2008 through 2011. This replacement piston kit is suited to riders, technicians, and powersports professionals seeking a practical solution for refreshing the top end of a four-stroke engine. With a 11.9:1 compression ratio, it is designed to support the intended combustion characteristics of the specified KTM application while helping return the engine to consistent operating performance.
PROX develops replacement engine components for powersports applications with a focus on dependable fit, function, and serviceability. This piston kit is supplied as a complete kit configuration, making it a convenient choice for an engine rebuild or top-end service when replacing worn piston components. Using a properly matched piston kit can help support efficient combustion, stable engine operation, and reliable power delivery when installed with the appropriate related components and procedures.
Before installation, confirm that the motorcycle year, model, engine specification, and existing cylinder condition match the application requirements for part number 01.6429.B. Professional inspection of the cylinder, connecting rod, crankshaft, and associated top-end components is recommended before assembly. Follow the manufacturer's service information for piston orientation, clearances, torque specifications, break-in procedures, and any required replacement hardware. The PROX 01.6429.B provides a focused replacement option for KTM 450 EXC-R 2008–2011 engine maintenance and rebuild projects.
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