SRM Engineering, Ltd. Dynamo Belt Drive Conversion Kit for BSA A7 and A10 bikes.

This kit exclusive from SRM is the best available.  Others on the market consist of a V type belt and pulleys, making the adjustment critical, and any oil or grease will make it slip.  The SRM belt drive utilizes positive toothed pulleys for positive drive, and a toothed steel wire reinforced belt that is suitable for use in oil or grease.  The toothed pulleys also gear up the Dynamo speed giving you a positive charge at a lower rpm.  The kit is a direct replacement and easy to fit.  Full instructions are included.

CAUTION:  When converting from a 6 volt to 12 volt system, the battery and bulbs will also need to be changed.  Please contact us by email for further details if you are unsure about which components you may need.

I own and operate a reputable British vintage bike shop.  Watch for new store listings -- we will be adding parts daily!

We ship Monday through Friday and will combine shipping.  Payment is due within 2 days of close of transaction.

If you are not satisfied with this item, please return it, shipping prepaid within 14 days of the close of this transaction and I will refund the purchase price.  No shipping refunds.

Please feel free to email your questions.  We try to answer questions as soon as possible.  Please be patient, our response may take several days.

Overseas buyers are welcome and must pay any additional shipping charges.  The shipping calculator is not always accurate.  We will gladly provide you with a shipping quote upon request.