OEM:
Norton: 3709
Regina: C120SR
3/8 x 5/32 42 link endless chain.
Will fit most Norton singles with 15T drive sprockets but check your existing chain for number of links first.
Compatibility
Norton used 15T sprockets on their singles from about 1932 until the engine underwent a major re-design in 1948. If your engine is post 1948 then you will probably need the 44 link chain which we also sell. However, as so many of these engines have been worked on over the years, we recommend you check what you currently have before ordering.
From the factory the following models would have been fitted with a 42 link between 1932 and 1948:
- Model 1 (Big 4)
- 16H
- Model 18
- Model 19
- Model 20
- ES2
Related Products
Regina Magneto Chain for Norton Singles - 42 Link
SKU: SC361
£25.35Price


