Triumph / BSA Unit Singles "Duplex" Primary Chains (1) - B25 / C25 / B44 / B50 / Etc - Choose Brand / Application 1960's Etc) from 1964-1970 with the

Etc) from 1964-1970 with the "Crinkle" Cast Iron Rear Hub only

Correct for BSA 650 Unit Twins (Lightning

We will even include the fixing clips ($9

All of our junction boxes are made in England and come complete with hardware (slider

Rim strips are sold each

Triumph / BSA Unit Singles "Duplex" Primary Chains (1) - B25 / C25 / B44 / B50 / Etc - Choose Brand / Application 1960's Etc) from 1964-1970 with theIs your primary unit single primary chain stretched or worn? Replace it today with our high quality primary chains we have to offer. Choose from Renold & KCM brand chains We stock primary chains to fit all Triumph and BSA unit singles (excluding the Cub) from 1959 1973 from the C15, B40, C25, TR25W, B25, etc. We also stock a primary chain for TR5MX, B44 & B50 models from 1966 1973. Please keep in mind that 250 & 350 models use a 70L chain while 441 &