Mini bike rear sprocket 25H 68T

Rear sprocket 25H, mini bike – a wheel with teeth on the rear hub. Together with the front sprocket and the chain it makes up the gearing: the tooth count decides whether the machine accelerates faster or runs faster on the straight.

• The 25H marking must match your chain's marking, otherwise the teeth will not fit its pitch
• The drawing marks 78 teeth, the name says 68; a 160 mm outer diameter matches 78 teeth, while for 68 teeth the sprocket would be about 142 mm
• Outer diameter 160 mm, centre bore 26 mm, mounting dimension 32 mm – figures from the maker's drawing
• Four spoke holes and three mounting holes
• The 25H marking is the fine mini bike marking, not interchangeable with T8F
• Replace all three parts together – a new chain wears fast and stretches again on worn teeth
• You will find other sprockets in the same category, and chains and joining links in the "Chains" category

We write only what we know. The name states 68 teeth, the drawing – 78. We do not pick the number ourselves, but we do say what the dimensions show: at the 25H pitch, a 160 mm diameter matches 78 teeth, while for 68 teeth the sprocket would be about 142 mm. Which number is correct, we are asking the maker – count the teeth on your old sprocket and write to us. Before ordering, copy the marking off your chain's side plate, count the teeth on the old sprocket and measure the mounting hole bolt circle and the centre bore – we will check it before you order.

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