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- Vespa Classic
- Replacement cylinder -EGIG PERFORMANCE Revo 220cc, triple exhaust port (hand-finished), bore Ø68mm, stroke 60mm, connecting rod 117mm - Vespa PV125, ET3 125, PK125
Hand-machined aluminum cylinder body with three-piece exhaust port, Ø 68 mm bore and designed for 60 mm stroke and 117 mm connecting rod.
The EGIG PERFORMANCE Revo 220 cc is the sportier version of the EGIG smallframe cylinder concept. With a three-piece hand-machined exhaust, Ø 68 mm bore, 60 mm stroke and 117 mm connecting rod, this cylinder body is designed for high performance, a wide rev range and powerful resonance set-ups. The Revo layout is machined before the Nikasil coating is applied to the cylinder. The technical basis is aimed at high-performance Vespa smallframe projects based on PV125, ET3 125 and PK125 with matching engine housing and coordinated peripherals. The cylinder is supplied without pistons, cylinder head, diaphragm, intake and other attachments.
EGIG PERFORMANCE Revo 220 cc Triple Exhaust Port hand-finished before Nikasil Nikasil without add-on parts Note EGIG/Fabbri housing
The Revo variant uses a three-piece exhaust port. Compared to a one-piece exhaust port, this layout offers more possible exhaust area and therefore a higher performance potential. This gives the engine a sportier character: the power is more pronounced in the resonance range, the usable rev range is shifted upwards and the setup requires more careful tuning of the exhaust, carburetor, ignition and transmission.
With a 60 mm stroke, the layout of the Triple Revo variant is approximately 129° overflow time and 190° exhaust time. This means that the Revo 220 is clearly geared towards performance-oriented engines. With the right set-up, outputs of up to around 40 hp and 35 Nm are possible. The exhaust, carburetor, diaphragm, crankshaft, housing machining and dyno tuning are always decisive.
The cylinder body has a Ø 68 mm bore and is designed as an aluminum cylinder with Nikasil coating. The Revo layout is machined before the cylinder is coated. As a result, the machined channel and exhaust areas are subsequently also coated and the raceway remains cleanly matched to the final machining status. The matching piston is not part of this article and must be selected separately to match the desired design.
In conjunction with a 60 mm stroke, this results in a 220 cc setup. The compression ratio is approximately 12.5:1 with a pinch point of around 1.2 to 1.3 mm, provided the head, piston and body are selected accordingly. The crushing edge, ignition timing, fuel quality and temperature balance must be carefully matched at this power level.
The EGIG Revo 220 is designed for modern smallframe housings and performance-oriented peripherals. The 8-fold stud bolt pattern covers both the M200 and the EGIG 250/300 hole pattern. On the exhaust side, the cylinder uses a 65 mm hole pattern, as known from the M200, supplemented by a central third M8 fastening thread.
The cylinder concept is designed for high-performance reed valve setups and can be fitted with an Italkit 8-valve reed valve and 30 mm or 34 mm intake. However, these components are not included in the scope of delivery of this article. Depending on the intake selected, the intake path can be routed through the original frame hole, which reduces the amount of bodywork required for powerful smallframe engines.
There are two centering pins on the cylinder base. This centering can only be used in conjunction with the appropriate EGIG/Fabbri housing. In the case of different engine housings, the technical design must be checked carefully before installation.
The EGIG cylinder concept can be built with different stroke and connecting rod combinations. The Revo 220 variant described here is designed for a 60 mm stroke and 117 mm connecting rod. For other stroke or connecting rod lengths, the cylinder position must be adjusted accordingly.
| Variant | Overflow time | Exhaust time | Character |
|---|---|---|---|
| Triple | 129° | 186° | sporty, but wider |
| Single | 129° | 186° | early pressure, even unfolding |
| Triple Revo | 129° | 190° | More peak power and more rev range |
| Single CHEP | 129° | 190° | sporty single outlet |
With less stroke, the exhaust time changes more than the overflow time. The higher the stroke, the lower the advance in relation. For this reason, the timing must always be measured on the actual engine.
The EGIG Revo 220 is somewhere between a powerful street cylinder and a sporty racing cylinder. Depending on the exhaust and carburetor, it can be built up to be very powerful, but also suitable for long-distance racing. The three-piece Revo exhaust appeals to riders who are looking for more top performance and more volume than the tamer variants and are willing to accept a more complex set-up in return.
This article only includes the cylinder body. All other components must be added separately to match the engine setup.
| Vespa 125 Primavera | VMA2T, check with suitable EGIG/Fabbri engine assembly |
|---|---|
| Vespa 125 ET3 | VMB1T, check with matching EGIG/Fabbri engine assembly |
| Vespa PK125 | VMX1T, check with matching EGIG/Fabbri engine assembly |
|---|---|
| Vespa PK125 S | VMX5T, check depending on engine base and peripherals |
| Vespa PK125 XL | VMX6T, check depending on engine base and peripherals |
| Vespa PK125 ETS | VMS1T, check depending on engine base and peripherals |
| manufacturer | EGIG PERFORMANCE |
|---|---|
| Type | Aluminum cylinder body with Nikasil coating |
| Version | Revo 220 cc, triple exhaust port, hand-finished before Nikasil coating |
| Bore | Ø 68 mm |
| Piston | not included in scope of delivery |
| Cylinder head | not included in scope of delivery |
| Diaphragm / intake manifold | not included in scope of delivery |
| Stroke design | 60 mm |
| Connecting rod design | 117 mm |
| Timing with 60 mm stroke | approx. 129° / 190° |
| Compression ratio | depending on piston, head, crushing edge and structure, approx. 12.5:1 with 1.2 to 1.3 mm crushing edge |
| Outlet | three-piece, hand-machined, 65 mm hole cut, additional central M8 thread |
| Spark plug | Central spark plug with matching cylinder head used separately |
| Cylinder cover | Fastening points and dimensions suitable for PX125 cylinder cover |
| Stud bolt pattern | M200 and EGIG 250/300 hole pattern, 8-fold |
| Centering | 2 centering pins on cylinder base, can only be used with EGIG/Fabbri housing |
| Suitable for | Vespa PV125, ET3 125, PK125 with matching engine mount |
The EGIG PERFORMANCE Revo 220 cc is a sporty smallframe cylinder body for riders who want to get performance not just from displacement, but from a consistently tuned overall system. The hand-finished three-piece exhaust before Nikasil coating, the Ø 68 mm bore, the Nikasil raceway and the 60 mm stroke layout make it a strong basis for performance-oriented Vespa PV125, ET3 and PK125 projects. Important: This item is supplied without piston, head, reed valve, intake and other attachments. The complete periphery must be selected separately to match the planned engine setup.
