BSA Unit Twins 1966-1969 

Model              1966 Eng      1967 Eng & Frame     1968 Eng & Frame     1969Eng & Frame

A50 Royal Star

A50 Wasp

A65 Thunderbolt

A65 Lighting

A65 Hornet

A65 Firebird

A65 Spitfire

Frame No. All models

A50R-101

A50W-101

A65T-101

A65L-101

A65H-101

A65S-101

A5OC-101

A50RA-101

A50WA-101

A65TA-101

A65LA-101

A65HA-101

A65SA-101

A5ORB-101

A50WB-101

A65TB-101

A65LB-101

A65FB-101

A65SB-101

A50RC-101

A65TC-101

A65LC-101

A65FC-101