... parts,quality guarantee 4.wholesale price KAD motorcycle valve series Product name Valve Brand name KAD Model number GY6 125, BAJAJ100 ... -8N,5Cr8Si2,4Cr9Si3...... Features 1.both the inlet valve and exhaust valve are forged with finest quality alloy material through advanced ... , long service life 3. perfect in workmanship, jumpiness of sealing surface less than 0.03mm,good gas tightness,run stably ...