Marston Sunbeam PAIR inner and outer Primary chain cases / covers – 1920’s 1930’s – SOLD

Marston Sunbeam PAIR inner and outer Primary chain cases / covers – 1920’s 1930’s – SOLD


Marston Sunbeam vintage motorcycle PAIR inner outer Primary chain cases. 1920’s 1930’s

For condition, please take a good look at the pictures. These Sunbeam chain cases / clutch primary covers are in decent condition. For a change the domes don’t have cracks. They will need a clean but they don’t have any cracks or chips that I can see, with the exception of a scrape on the lower part of the clutch dome on the outside.

I have shown pictures of cast and any stamped numbers that I can find.

I bought these a long time ago just incase I might need them. They have sat in a box since then.

They are aluminium, not steel.

I’m sure someone will let me know which model they are for. If you need dimensions before you buy, please ask.

They are for sale as a pair.


Other Sunbeam parts: I have some. Please view my other Sunbeam parts or get in touch.




  • International shipping available. Please ask.
  • Combined shipping available if you buy other parts. 
  • I usually ship to most destinations. If you don’t see a price, please ask. Shipping is in addition to the listed price for the item.

Viewing: Please come and check it over before you buy. It is at PE28, near St Ives in Cambridgeshire.

Collection: If you don’t want it shipped, I have plenty of space. If you can’t collect for a while, it’s not a problem. However, I will need to be paid very soon after the sale. Thanks.

Payment: This site has a facility to pay online. Good old fashioned money on collection is preferred. I can accept payment through PayPal or by bank transfer as well.

Import Taxes: Please note that IMPORT DUTIES are not something I can control. If you are buying from outside the UK, there is a chance that you will have to pay import taxes. Import taxes vary from country to country. If there are charges to pay, it is the buyer’s responsibility to research the cost and pay the duties. The price that you see on my advert is for the item and not the item plus whatever taxes might be due.









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