Prox piston size 66,37 KTM SX 250 05- & EXC 250 06- & Husqvarna TC 250 14- & TE 250 14- & Beta RR 250 2-stroke 13-15

Unlock new power and reliability for your 250cc 2-stroke with the ProX 66.37 mm Piston – the premium piston that fits perfectly on KTM SX 250 (2005 and newer), KTM EXC 250 (2006 and newer), Husqvarna TC 250 (2014 and newer), Husqvarna TE 250 (2014 and newer), and Beta RR 250 2-stroke (2013–2015)!

ProX pistons are crafted from premium forged aluminum with a special coating for excellent heat dissipation and minimal wear. The 66.37 mm size (standard oversize) ensures a perfect fit in the cylinder, delivering improved compression, cleaner combustion, and more power compared to a worn original piston.

This piston is sold as a complete kit including piston rings, piston pin, and clips – ready for immediate installation. Whether you’re performing a full overhaul after an intense race season, performing a mild overbore, or simply replacing it preventatively, this ProX piston will get your KTM, Husqvarna, or Beta 250 2-stroke back to top condition with that tight, powerful 2-stroke feel.

Why Riders Choose the ProX 66.37 mm Piston:

• Premium forged aluminum with heat-resistant coating
• Precise 66.37 mm size for a perfect fit
• Complete kit with rings, piston pin, and clips
• Increased compression, improved throttle response, and cleaner combustion
• Trusted ProX quality at a competitive price
• Fits KTM SX 250 05-, EXC 250 06-, Husqvarna TC/TE 250 14-, and Beta RR 250 2-stroke 13–15