Heavy Duty Gold Drive Chain: 420-100L Kawasaki KLX250 the bottom fork is 10mm

the bottom fork is 10mm / M10  thread

SBS: SBS815

If you're having spark issues (weak or no spark) with your Honda CBR 600 then the ignition coil / coils could be the culprit and it may be worthwhile changing your ignition coils for brand new high quality replacements

Upgrade your barrel from 50cc to 60cc with no modifications necessary from the standard QT50

Heavy Duty Gold Drive Chain: 420-100L Kawasaki KLX250 the bottom fork is 10mmBrand new heavy duty gold drive chain: 420 x 100 Links Pitch Width Links 420 100 Colour Gold Seal Type No Seal Master Link Type Clip Please check size, colour and seal type prior to purchasing. If you require a different size, you can find our full list of sizes by clicking HERE