Your Casa Lambretta Specialist Dealer
21T front sprocket for Lambretta LI S1, LI S2, LI S3 Special, SX, TV, DL
Combinations of sprocket and crownwheel:
21 - 46 uses 83 link chain
21 - 47 uses 84 link chain with pull down type chain tensioner like Casa Performance X44
21 - 48 uses 84 link chain