Piston -VMC T-56 - 106 ccm Ø56, stroke=43mm, cast iron- Vespa V50, PK50

Replacement piston for VMC T-56 106 cc racing cylinder

Precision piston as OEM spare part for the VMC T-56 cast iron cylinder with Ø56 mm bore - ideal for Vespa smallframe tuning engines with standard stroke (43 mm).

Technical design & advantages

✅ Bore: Ø56 mm - suitable for the VMC T-56
✅ Material: Cast aluminum with TIN coating for low friction and high durability
✅ Piston rings: 2 pieces, each 1 mm thick - for optimum sealing
✅ Shape: Sporty design for high engine speeds
✅ Spark plug: Short thread, recommended e.g. NGK B9HS or Bosch W2AC

Suitable for

✅ VMC T-56 racing cylinders with standard stroke 43 mm
✅ Vespa V50, PV, PK50 with smallframe engines and corresponding adaptation

Recommended environment

✅ Cylinder: Only suitable for the VMC T-56 Ø56 mm
✅ Cylinder head: CNC-machined aluminum head for 9.85:1 compression
✅ Crankshaft: Racing crankshaft recommended for better timing
✅ Carburetor & exhaust: min. 19/19 mm SI carburetor and tuned box exhaust system

Please note

Only intended for use in combination with the VMC T-56. Not compatible with other cylinders. Supplied without cylinder, head or gaskets.

Technical reference values of the cylinder

✅ Control angle: 124°/172°
✅ Pre-discharge angle: 24°
✅ Compression ratio: 9.85:1
✅ Exhaust cross-section: Ø28 mm
✅ Ignition timing: static 16° before TDC