CHAINS & SPROCKETS
Rear Chain - Heavy Duty chains are wider than standard ones of the same listed size due to their thicker side plates.
O-ring chains are much wider than those with the same size rating but without an O-ring. X-ring chains are narrower than
O-ring ones but still wider than standard chains. The old “link and a half” master link is no longer listed by the major
chain manufacturers so great care must be taken when cutting the chain for your application.
| #520 x 110 links | - | O-Ring V by DID | - | #U314 | Spare Master Link | - | #U315 | |
| #520 x 110 links | - | X-Ring VM by DID | - | #U316 | Spare Master Link | - | #U317 | |
| #530 x 110 links | - | Standard Duty by EK | - | #U336 | Spare Master Link | - | #U313 | |
| #530 x 110 links | - | Heavy Duty SR by EK | - | #U312 | Spare Master Link | - | #U313 |
Race Chain - Most knowledgeable builders of 500cc - 750cc vintage road racers machines prefer using #520 non-o-ring chain.
A 520 chain is as strong as the wider #530 chain originally used on many models, assuming comparable quality, but considerably
lighter as are the matching sprockets. DID's ERT chain is one of the strongest 520's available.
ERT 520 x 120 links - #U310 Extra master links - #U311
Commando #520 Rear Sprocket/Brake Drum – A copy of the 06-2764 Commando drum but made for use with a 5/8" x 1/4" chain opposed to the standard 5/8" x 3/8" chain. When paired with one of our 520 gearbox sprockets it allows the use of either a lighter 520 chain for racing or an o-ring 520 chain (a 530 o-ring chain is too wide to fit the Commando) for reduced maintenance and longer chain life. Limited quantities available. #C320
Norton #520 Sprockets
Gearbox sprockets for 520 chain to fit all AMC/Norton Gearboxes.
| 17T | - | #N217 | 21T | - | #N221 | |
| 18T | - | #N218 | 22T | - | #N222 | |
| 19T | - | #N219 | 23T | - | #N223 | |
| 20T | - | #N220 |
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