Kit configured to re-seal stock or aftermarket pipe with proper new swivel hook pipe springs, "O" Rings, and Hi-temp silencer to pipe coupler. Note regarding 200cc: *For select 200cc('11-16 only). If unsure, please check coupler image #2 for measurements and OEM part number for reference. Replaces factory equipment with exact fit quality parts. Kit comes complete with what you see. Designed to fit KTM 2-Stroke 200cc *('11-16 only), 250cc, 300cc '99 to Current, Husqvarna TC/TE 250 '14 to Current, & TE/TX300 '14 to Current and GASGAS EC/EX/MC250/300 '21 to Current Complete set, nothing else needed to seal up your two stroke exhaust pipe. Expansion Chamber Seal kit for 2-Stroke *200 250 300 cc Euro Dirtbikes KTM SX, GasGas EC EX MC, & Husqvarna TC TE TX Motorcycles. Kit replaces old factory parts with fresh springs, O-ring seals, and pipe to silencer coupler.