Triumph Exhaust-Valve Guide T90/T100 1957-74 Unit motor only T90,3TA,T21.5T,T100A,T100C,T100RBSA C15 1959-1966replaces 40-133 Std. Made in England70-3208 iron not available.
Triumph 5T Pre Unit Piston Pair 63 mm +040 = 64 mm Compression: 7:1T100 Low Compression Piston Clearance 0.12mm or 45thouwith Piston Rings, Gudgeon Pin and CirclipsPrice per pairPlease look at all pictures
Triumph Pistons and Liners T100 500cc, 9:1 Compression Pre Unit std size 63 mmOnce the liners are fitted the pistons will be need to be bored to a Piston clearance 0,12 mmgap of piston rings 0,25 mm