New BSA pre-unit rear wheel chain adjuster bolt. This bolt is made in England to replace BSA part number 42-6040. Typically (2) are needed for (1) motorcycle / rear wheel. Fits various BSA pre-unit singles and twins (A7, A10, B31, B33, etc) up to approx 1962. Check your parts book to ensure the best fitment.
Please note that this rear wheel chain adjuster bolt is sold individually
- Made in England
- OEM part number is 42-6040
- Free shipping in the USA