Bolt 2-Stroke Pipe O-Ring / Sleeve / Springs Yamaha YZ125 '01–'21 size-7 providing consistent performance from practice

providing consistent performance from practice to race day

Features advanced seal technology that significantly extends the interval between chain cleanings

Dual-layer foam creates a tortuous path for dirt while allowing high-velocity airflow

With a completely overhauled design

Utilises a full-waffle design across the entire surface to maximise grip surface area and mud clearance

Bolt 2-Stroke Pipe O-Ring / Sleeve / Springs Yamaha YZ125 '01–'21 size-7 providing consistent performance from practiceExpansion chamber seals and springs for popular two strokes. Kit contains pipe O rings, pipe to silencer coupler, and exhaust pipe springs.