2>1 STEEL RACING FULL KIT ORIGINAL FULL KIT WEIGHT: KG 9.3 ZARD FULL KIT WEIGHT: KG 6.85 HARD INCREASE IN TERMS OF RESPONSE IN THE RANGE BETWEEN 4000 AND 6500 RPM AND 1,5 MORE HP COMPARED TO THE ORIGINAL EXHAUST SYSTEM. ASTONISHING SOUND.