Part No. 65-6377.PS
SUZUKI RMZ450 2008-2015,
SUZUKI RMX450 2010-2019,
VALVE SPRING INTAKE PSYCHIC XU-09527IS
SPRINGS ARE MADE OF SWOSC-V MATERIAL (OIL TEMPERED STEEL

WIRE). SOME SPRINGS FEATURE A PROGRESSIVE STYLE DESIGN. PROGRESSIVE STYLE SPRINGS HAVE MORE COILS ON ONE END. THE END WITH MORE COILS IS HEAVIER AND SHOULD ALWAYS BE INSTALLED TOWARDS THE BOTTOM. NON-PROGRESSIVE SPRINGS ARE PAINT MARKED ON THE END THAT IS TO BE INSTALLED TOWARDS THE TOP.
Cross reference numbers. 12921-28H00,

DIMENSIONS. WIRE DIA 3.3MM,O.D.25/I.D.18.5(+/-0.2)MM, LENGTH 35MM(+/- 0.5), 6 ROLL.