125 cc Racing Cylinder from SIP PERFORMANCE with powerful layout for Vespa Largeframe Models from 125 to 150 cc.
With the SIP PERFORMANCE 125 Cylinder, Vespa Largeframe scooters can be transformed into a two-wheeler in the 125cc class with modern riding performance. This makes it particularly suitable for Vespa riders who have a driving license with an engine capacity limit of 125 cc. Vespa scooters with 150 cc can also be usefully converted with this Cylinder. The SIP PERFORMANCE 125 Cylinder delivers a better power output than original 150 cc cylinders from VBA to PX.
- Powerful 125 cc Cylinder
- Compatible with 2- and 3-channel engines
- Available in aluminum or cast iron
The performance of classic 125 cc scooters in their original condition is often no longer up to date. The SIP PERFORMANCE 125 Racing Cylinder can change that. This means that even 125cc license holders can safely keep up with the traffic.
The Cylinder draws its power from a sophisticated transfer system. The mixture enters the combustion chamber through six transfer ports. In the cast iron version, the exhaust is oval, while in the aluminum version the exhaust gas escapes into the Exhaust through three exhaust ducts.
The head is fitted with 8 fittings and additionally sealed with an O-Ring. The exhaust is made of steel and is bolted to the Cylinder. The Piston is coated to protect the piston skirt during the running-in phase.
Available as an aluminum or cast iron cylinder
The Cylinder is available in two material versions: as an aluminum cylinder with a coated raceway or as a cast iron cylinder. Aluminum is lighter, dissipates heat better and has a resistant coating. Cast iron is the classic cylinder material of old Vespa models, is easier to bore to oversize and is cheaper to buy.
Both models differ in the design of the exhaust port. The aluminum cylinder has a three-piece design, while the cast iron cylinder has a one-piece design.
Can be fitted to 2- and 3-channel Engines
The Cylinder is always installed with a 4 mm thick Spacer between the Cylinder and the Crankcase. Two different Spacers are included in the kit: one for mounting on a 3-channel casing, the other for 2-channel casings. In addition, paper gaskets of different thicknesses are included for both types of housing, which can be used to adjust the height of the Cylinder.
Operation as a 125 cc scooter
The 125cc class continues to enjoy unbroken popularity and provides an introduction to motorized locomotion on two wheels. Depending on the country-specific regulations, 125 cc two-wheelers can sometimes be ridden without a motorcycle license. Sometimes a car driving license, a special driving license from the age of 16 or an inexpensive additional driving license is sufficient. With the SIP PERFORMANCE 125 cc, it is possible to build up engines for such driving license regulations that offer adequate driving performance.
Important: For operation on public roads, prior consultation with the licensing authorities is necessary. Depending on the country-specific regulations, a complex individual approval is usually required. Without special approval by the responsible licensing authority, it is prohibited to operate the Cylinder on public roads.
Technical details
- Coated aluminum or cast iron cylinder
- Bore: 52.8 mm
- Stroke: 57 mm
- Adaptable to 2- and 3-channel Crankcase
- Coated Piston
- 2 x 1 mm Piston Rings
- Bolted exhaust flange
- 8-fold bolted head with O-Ring seal
- 6 transfer ports
- 3 outlet ports for aluminum version
- Squeeze gap: 1.2 mm
Conclusion: Whether PX 125 or VBB 150 - with this Cylinder, the Vespa can be converted into a well-powered 125.
The best setup - our SIP TIP:
