Racing Cylinder SIP PERFORMANCE 125 cc 6 Travasi

High-performance cylinder kit in the 125cc class for Vespa smallframe models. The SIP Performance cylinder helps the small Vesps to achieve modern performance in the popular displacement class.

The SIP Performance 125cc has a modern layout of the overflow system. This makes it possible to achieve significantly better performance than with the original 125cc cylinder of the Vespa Smallframe models.

• 125cc capacity
• Modern channel layout with large cross-sections
• 8-fold bolted head
• High quality piston

The 125cc class enjoys unbroken popularity. It provides an introduction to motorised locomotion on two wheels. Depending on country-specific regulations, 125cc two-wheelers can often be ridden without a motorbike licence. Sometimes a car driving licence, special driving licences from the age of 16 or inexpensive additional driving licences are sufficient.

With the SIP Performance 125cc, it is possible to build engines for such driving licence regulations that offer adequate driving performance. The original Vespa smallframe engines only produce 5.6 hp and 80 km/h. The SIP Performance 125cc engine achieves this. With the SIP Performance 125, the achievable power is on a par with the 133cc-136cc grey cast iron tuning cylinders that have been widely used since the 1990s.

Important: for operation on public roads, consultation with the licensing authorities is of course necessary beforehand!

The technical details at a glance

• Cast iron cylinder
• Bore 55.4mm
• Capacity 123.83cc
• Stroke 51mm
• 6 transfer ports
• Flat piston with two piston rings
• 8-fold bolted cylinder head
• Distance exhaust studs: 52mm
• Incl. 4 foot gaskets
• Cylinder fits without modifications to the crankcase

• On some models, the lowest cooling fin on the fan wheel side must be machined so that the original fan wheel fits.

Timing:

• Boost port: 118°
• Exhaust: 178°
• Transfer ports: 122°

Conclusion: The perfect, contemporary update for the engines of the Smallframe Vespa.

The best setup - our SIP TIP:

• The SIP Performance ignition
• The SIP Road Banana
• The SIP crankcase