Marston Sunbeam Lion 598cc Side Valve cylinder barrel, piston and head

Marston Sunbeam Lion 598cc Side Valve cylinder barrel, piston and head


1931-on Vintage motorcycle – Marston Sunbeam Lion Side Valve cylinder barrel, piston and head for sale.

This barrel and head is in decent condition.There’s one obvious fin chip, with one or two more that are less visible. The barrel looks decent. It could do with a light hone probably. The aluminium piston came with this set, so I am assuming that it belongs to it.

  • The bore is around 85.5mm. (Standard Bore on the 598cc is 85mm)
  • The top of the piston states that it’s Plus 30.
  • It also comes with the exhaust clamp / ring as shown.

It’s for sale as you see it. I don’t have other parts. If you’re building up a Side Valve Sunbeam Lion, then this is a handy purchase. If you own a Sunbeam Lion motorcycle, it’s also handy to have as a spare.

The barrel has two numbers. They are difficult to make out.

International shipping available. Please ask.

Combined shipping available. 

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

Shipping: I usually ship to most destinations. If you don’t see a price, please ask. Thanks. International shipping available.

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: 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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