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A baseline
guide to gearing for your bike at the Uk's different circuits

|
Circuit
|
125
|
250 GP
|
250 TZR
|
400
|
600
|
750
|
1300
|
Sidecars
|
|
Brands
|
17 x 41
|
15 x 38
|
|
14 x 44
|
14 x 46
|
|
|
|
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Cadwell
|
16 x 38
|
15 x 37
|
14 x 43
|
14 x 45
|
14 x 45
|
|
|
|
|
Donington
|
|
15 x 37
|
|
14 x 45
|
14 x 46
|
|
|
|
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Snetterton
|
16 x 37
|
16 x 38
|
15 x 43
|
15 x 45
|
14 x 46
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|
|
|
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Lydden
|
16 x 40
|
15 x 39
|
14 x 42
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|
14 x 50
|
|
|
|
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Silverstone
|
16 x 39
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15 x 37
|
|
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14 x 46
|
|
|
|
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Oulton
|
16 x 39
|
15 x 37
|
14 x 41
|
14 x 45
|
14 x 47
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|
|
|
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Thruxton
|
|
16 x 37
|
|
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15 x 45
|
|
|
|
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Pembrey
|
|
|
14 x 41
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14 x 46
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14 51
|
|
|
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Croft
|
|
15 x 38
|
|
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15 x 48
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|
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Mallory Pk
|
17 x 41
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15 x 39
|
|
14 x 47
|
14 x 47
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|
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Anglesey
|
|
|
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13 x 44
|
|
|
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Aintree
|
|
|
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14 x 42
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|
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IoM Manx
|
|
|
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16 x 42
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|
|
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Knockhill
|
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14 x 48
|
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If you can help fill the gaps please contact us 
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