BSA M20 – M21 Valve guide inlet/exhaust Opn. 66-139, 66-140

Condition: NOS  Made in England

Fits 500 – 600 SV Singles 1939 – 1958

ID 9 mm. OD 5/8″  Lenght 87 mm   Price is for one guide.  Inlet + exhaust guide is the same article.

Weight: 1.000000 kg