Cylinder heads for the Vespa T5 are becoming harder to get hold of but SIP have sorted that problem out with their new heads, both for standard and tuned scooters. They’re available now in the United Kingdom from VE (UK)
Standard 125 version: £106.19 (part number VE101165)
Available now the standard 125cc version uses a standard gasket, has an internal diameter of 56mm and a 1.2mm drop from the gasket face to the squish. This gives a compression of 11.5:1.
Malossi 172cc version: £114.98 (part number VE10166)
The 172cc version uses an ‘O’ ring for sealing, as found on Malossi PX heads. It has an internal diameter of 66mm and a 1.2mm drop from the gasket face to squish face. This gives a compression ratio of 12.5:1. Both heads are manufactured from high-grade aluminium.
Visit the VE (UK) online store to order yours.
SIP Scootershop have offered one of these heads to test, which are also available to suit Polini kit, so keep an eye on SLUK.