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Below are the sizes we have available, a guide to what is recommended . Please put what size you need in the notes of the order.
21 mm: 50cc to 100cc engine
24 mm: 50cc to 110cc engine
26 mm: 75cc to 125cc engine
28 mm: 75cc to 125cc engine
30 mm: 100cc to 160cc engine
32 mm: 125cc to 200cc engine
34 mm: 125cc to 250cc engine
