A powerful performance cylinder for the Vespa 125-200cc largeframe models and the SIP – BFA engine casings.

The SIP-BFA 225cc performance cylinder is the slightly smaller sibling to the 306cc SIP-BFA cylinder that is not just equipped with a reduced capacity from the same manufacturer, but also shares the same layout and number of transfer ports, along with the high performance potential represented by the relationship between the transfer ports and bore. The most obvious difference, apart from the capacity reduction, is its method of attachment to the engine casings. This 225cc version of the BFA cylinder employs the same cylinder fixing stud layout as the original Vespa engine casings for the 125-150cc motors. This also leads to the studs being directed through the transfer port cavities, meaning they will require a gas-tight seal at the top to avoid any unwanted leaks. The main advantage of this stud layout is that these cylinders, with suitable modifications to the motor, can be mounted to the original Vespa engine casings.

The SIP-BFA 225cc cylinder represents exactly the right choice for riders not requiring the brute force of the 306cc cylinder, but appreciate the advantages of a modern motor concept – equipped with noticeably more durable components and a more than adequate reserves of power! The smaller cylinder also runs more harmoniously and smoother than its larger equivalent while still offering the same tuning potential normally available from a completely exotic cylinder conversion.

Conclusion: The more practical and ridable version of the BFA 306 cylinder, bristling with identical high-tech specifications, but technologically easier to install and master.

SIP – TIP : Do not forget to order the correct peripheral components, such as the engine casings (#78242250) and the crankshaft (#78245810).