Triumph Pre-Unit Cylinder Base Nuts – 500cc 1950-62 & 650cc T100 T110 TR6 T120

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Description

These are brand new cylinder base nuts from Coventry, made for Triumph pre-unit twins – fits 500cc models from 1948-1958 and 650cc models like the T100, 5T, T110, TR6, and T120 from 1950-1962.
Part number PO172/W79.

GENUINE TRIUMPH CYLINDER BASE NUTS T120 650 BONNEVILLE TR6 1968-73 21-0692

They're the correct hardware to hold your cylinder down to the crankcase, a critical part of any engine rebuild.

Triumph Cylinder Head Medium Bolt - Pre Unit Models Circa 1939-62

If you're restoring a classic Bonnie, Tiger, or Thunderbird, you need the right nuts to get the torque spec right.
These are new old stock style, no packaging, but they're fresh and ready to thread on.
Made of quality steel, they handle the heat and vibration.
Not a performance part, just essential hardware that you don't want to cheap out on.

1950s Pre-Unit Triumph Factory Dealer Part Bags 500 650 T110 T120 T100

Perfect for your vintage Triumph project – whether it's a full restoration or just a top-end refresh.

No UPC, but they're the correct fit for those pre-unit motors.

Triumph Cylinder Base Gasket - 500/650cc Pre Unit 650cc Unit Models Circa 1950-65

Get your classic Brit bike back together with confidence using these proper cylinder base nuts.

Small part, big importance.

TRIUMPH PRE UNIT CYLINDER BASE NUTS 48-58 500 1950-62 650 T100 5T T110 TR6 T120 | UK

37-0076 TRIUMPH PRE UNIT 5T 6T T110 T120 CYLINDER BASE NUTS x 8 1939-62 UK MADE | UK