How Close Can You Get to a Factory Yamaha YZ250 2-Stroke?

#motocross This Week in MXA, presented by O'Neal, Josh Mosiman is breaking in our 70th anniversary white and red 2026 Yamaha YZ250 two-stroke. This engine was fully built by Pro Circuit, identical to Ken Roczen's 2022 Red Bull Straight Rhythm-winning YZ250 and Ryan Villopoto's Two-Stroke World Championship bike from 2024. Surprisingly, with Pro Circuit's head and cylinder mods, the Wiseco piston, the Pro Circuit billet clutch cover, all the gaskets, and labor, the engine price comes out to only $1500. However, we forgot to factor in the MotoTassinari V-Force4X reed valve ($165), the Pro Circuit Champ Stamp pipe ($384.95), and the R-304 silencer ($206.29. Also, on a separate bill, the revalved KYB suspension from Pro Circuit goes for just under $900.  Subscribe to Motocross Action: https://hi-torque.com/product/subscri... Follow Motocross Action:    / @motocrossaction   Motocross Action Website: http://www.motocrossactionmag.com/ Motocross Action Facebook: https://www.facebook.com/pages/Motocr... Motocross Action Twitter:   / mxaction   Motocross Action Instagram:   / motocrossactionmag