CRF125F Stroker Crank

  To avoid a core charge, your stock CRF125F crankshaft (in good, reusable condition) must be sent in prior to purchase. Please email us to begin the core exchange process. Your OEM crankshaft is essential for our core exchange program, which allows us to continue offering high-quality refurbished and upgraded stroker crankshafts to the community. This listing features a +2mm stroker crankshaft upgrade for the CRF125F. By increasing the stroke by 2mm, this crankshaft boosts engine displacement and piston travel—delivering increased torque, improved low-end power, and enhanced overall throttle response. It’s a proven performance upgrade for riders looking for a stronger, more responsive engine without requiring extensive modifications.