THIS IS A NEW,OLD STOCK, REPLACEMENT REAR 42 TOOTH STEEL SPROCKET. TO FIT CAGIVA AND DUCATI MODELS BELOW THAT USE 1022 FITMENT TO ALTER STANDARD GEARING, (QUICKER ACCELERATION)

MADE IN ITALY BY CHIRAVALLI

CHIRAVALLI PART NUMBER - 1022-42

JT CROSS REFERANCE- JTR1022-42

THE BELOW USE THE 1022 FITMENT, BUT 41 TEETH AS STANDARD