Front sprocket 520 13T

Front sprocket 520, 13 teeth — the small sprocket on the engine shaft. It turns fastest in the drive and wears first: change it with chain and rear sprocket.

• The 520 marking — it has to be the same as the marking on your chain, otherwise the teeth will not suit its pitch
• 13 teeth — the drawing marks "Z13"
• Outside diameter 72.30 mm — that is how it is marked on the drawing
• The splined centre bore is 17.15 mm; 34.50 mm between the holes of the retaining plate
• There is a fourth figure on the drawing as well — 20.15 mm; what it measures is not written down, so we give it no meaning
• Change all three parts together — on worn teeth a new chain wears fast and stretches again
• The category also holds a 520 front sprocket with 14 teeth — one tooth more, a longer gearing; in the 520 row there are no other front sprockets
• Other sprockets are in the same category, and chains and their joining links in the "Chains" category

We write only what we know. Before ordering, copy the marking off your chain's side plate, count the teeth on the old sprocket and measure the bolt circle of the mounting holes and the centre bore — we will check it before you order.

24-month warranty · tel. +370 685 777 56