First-class racing kit with 64 cc displacement – the preferred choice of many racers with Puch mopeds / mopeds.
The cylinder fits your Maxi with E50 engine or X30 Sport with Z50 engine, among others.
In combination with the supplied 2-valve reed valve system, the racing cylinder will give you plenty of torque even from low revs. Thanks to the use of a single piston ring, the tuning cylinder is also extremely high revving and aggressive. The performance often exceeds that of 45 mm cylinder heads. The workmanship is high quality and the nickel-silicon carbide coating (colloquially known as Nikasil) ensures durability and longevity.
In addition to the cylinder head, the scope of delivery also includes the piston, clips, bolts and a piston ring. The base and head gasket and the complete diaphragm system are also included.
| Manufacturer | Polini |
| Material | Aluminum |
| Camouflaged | No |
| Surface | Nickel silicon carbide (colloquially known as Nikasil) |
| Displacement | 65 ccm |
| Crankshaft stroke | 43 mm |
| Nominal diameter | 43.5 mm |
| Ø cylinder neck | 48 mm |
| Ø outlet inside | 22 mm |
| Hole spacing inlet | 32 mm, 39 mm |
| Number of fixing points | 4 pcs |
| Inlet window | 26 x 21 |
| Ø piston pin (B) | 12 mm |
| Hole spacing outlet | 42 mm |
| Hole pattern [mm] | 44 x 44 |
| Thread inlet | M5x0.8 (standard thread) |
| Outlet type | straight |
| Thread outlet | M6x1 (standard thread) |
| Area of application | Tuning, Racing |
| Puch | E50 ZA50 (air-cooled) Z50 (X30 Sport) |
Accessories & related products
GPO 43.5 mm cylinder head with O-ring, Polini Tuning new version | Puch
Material: Aluminum · Manufacturer: GPO · Surface: sandblasted · Ø cylinder: 43.5 mm · Width: 135 mm · Height: 55 mm · Total length: 140 mm · Number of fixing points: 4 pcs · Hole pattern [mm]: 44 x 44 · Candle thread: short · Decompressor: No · Area of application: Tuning
EUR 64.00
Polini piston 43.5 mm type A | Puch
Manufacturer: Polini · Ø outside piston (A): 43.45 mm · Ø piston pin (B): 12 mm · Compression height (C): 23 mm · Curvature (D): 3.6 mm · Total piston height (E): 50.55 mm · Number of piston rings (F): 1 pcs · Nominal diameter: 43.5 mm · Piston ring mold: Rectangular ring · Piston ring impact: Internal fuse (IS) · Piston ring height: 1.2 mm · Tolerance group: A · Weight piston kit: 93 g
EUR 112.60
Membrane transpacer Polini Trapez 12 mm aluminum | Puch ZA50
Thickness: 12 mm · Mounting type: Screws · Number of fixing points: 4 pcs · Ø mounting hole: 5.4 mm · Material: Aluminum · Surface: blank · Width: 42.5 mm · Width: 46 mm · Total length: 50 mm · Hole pattern [mm]: 32 / 36 x 39 · Area of application: Tuning
EUR 35.50
Not in stock
Membrane transpacer Polini Trapez 6 mm aluminum | Puch ZA50
Thickness: 6.15 mm · Mounting type: Screws · Number of fixing points: 4 pcs · Ø mounting hole: 5.4 mm · Material: Aluminum · Surface: blank · Width: 46 mm · Total length: 50 mm · Hole pattern [mm]: 32 / 36 x 39 · Area of application: Tuning
EUR 31.90
Polini 43.5 mm cylinder kit reed valve with head | Puch
Material: Aluminum · Manufacturer: Polini · Camouflaged: No · Surface: Nickel silicon carbide (colloquially known as Nikasil) · Crankshaft stroke: 43 mm · Displacement: 65 ccm · Nominal diameter: 43.5 mm · Ø cylinder neck: 48 mm · Ø outlet inside: 22 mm · Number of fixing points: 4 pcs · Hole spacing inlet: 32 mm · Hole spacing inlet: 39 mm · Ø piston pin (B): 12 mm · Inlet window: 26 x 21 · Hole spacing outlet: 42 mm · Thread inlet: M5x0.8 (standard thread) · Hole pattern [mm]: 44 x 44 · Outlet type: straight · Thread outlet: M6x1 (standard thread) · Area of application: Racing · Area of application: Tuning
EUR 474.50
Polini 43.5 mm cylinder head | Puch
Manufacturer: Polini · Number of fixing points: 4 pcs · Material: Aluminum · Ø cylinder: 43.5 mm · Width: 135 mm · Height: 48 mm · Total length: 145 mm · Hole pattern [mm]: 44 x 44 · Candle thread: long · Area of application: Racing · Area of application: Tuning · Decompressor: No
EUR 94.80
Polini intake system 4-folding diaphragm "Big Valve" PHBG / CP carburetor | Puch
Manufacturer: Polini · Mounting type: Screws · Material: Aluminum · Camouflaged: No · Material: Plastic · Surface: glass bead blasted · Number of flaps: 4 pcs · Membrane material: Carbonite · Thread type: M5x0.8 (standard thread) · Thick membrane platelets: 0.3 mm · Number of fixing points: 4 pcs · Area of application: Racing · Area of application: Tuning · Ø mounting hole: 5.2 mm · Ø outside: 24 mm · Ø inside: 28.6 mm
EUR 166.00
Hot 
43.5 mm cylinder head CNC Tuning | Puch E50
Manufacturer: Made in Switzerland · Material: Aluminum · Area of application: Tuning · Ø cylinder: 43.5 mm · Total length: 169 mm · Width: 164 mm · Height: 50.6 mm · Candle thread: short · Number of fixing points: 4 pcs · Hole pattern [mm]: 44 x 44 · Decompressor: No
EUR 225.30
Explore categories from Cylinder
Moped fans also bought
Hot
Gas cable Ø 1.25 mm x 220 cm (cylindrical nipple) Bing
Manufacturer: Made in Germany · Material: Steel · Ø nipple: 3 mm · Surface: galvanized (blue) · Number of components: 1 pcs · Ø Stranded wire: 1.25 mm · Nipple shape: Cylinder · Cable length: 2200 mm · Nipple length: 5 mm · Area of application: Standard
EUR 2.85
GPO 43.5 mm cylinder head with O-ring, Polini Tuning new version | Puch
Material: Aluminum · Manufacturer: GPO · Surface: sandblasted · Ø cylinder: 43.5 mm · Width: 135 mm · Height: 55 mm · Total length: 140 mm · Number of fixing points: 4 pcs · Hole pattern [mm]: 44 x 44 · Candle thread: short · Decompressor: No · Area of application: Tuning
EUR 64.00
Polini CP 19 mm carburetor (hand choke)
Material: Aluminum · Manufacturer: Polini · Camouflaged: No · Component group Carburetor: Carburetor complete · Carburetor type: CP · Width: 66 mm · Height: 135 mm · Nominal diameter: 19 mm · Total length: 73.5 mm · Nozzle thread: M5x0.8 (standard thread) · Ø Internal connection: 24 mm · Ø without reducing sleeve: 26 mm · Nozzle size: 66 · Ø Inside entrance: 19 mm · Ø Output inside: 19 mm · Ø Air filter connection: 46 mm · Ø fuel hose connection: 6 mm · Ø fuel hose connection: 7 mm · Mixed oil connection: Yes · Vacuum connection: Yes · Choke control: Hand choke · Nozzle block: 35-12 · Size of secondary nozzle: 42 · Mounting type: Plug connection clamped · Area of application: High End · Area of application: Performance · Area of application: Racing · Area of application: Tuning
EUR 166.00
Hot
swiing® ingenious crankshaft "High End" with mounted bearings | Puch E50
Material: Aluminum · Material: Steel · Manufacturer: swiing® ingenious parts · Weight: 968 g · Cheek type: Full cheeks · Crankshaft stroke: 43 mm · Connecting rod length center-center: 90 mm · Total length of crankpin on clutch side: 74 mm · Total length crankpin ignition side: 66 mm · Ø crank webs: 69.9 mm · Ø piston pin (B): 12 mm · Ø Connecting rod eye: 15 mm · Ø Bearing seat (clutch side): 17 mm · Ø Bearing seat (ignition side): 17 mm · Thread type: MF10x1 (fine pitch thread) · Thread length: 11 mm · Thread length: 15 mm · Dimension needle bearing: 12 / 15 x 14.2 mm (axe 12) · Wide crank webs: 34 mm · Length 1st paragraph: 9 mm · Length 2nd paragraph: 14.5 mm · Length 3rd paragraph: 25 mm · Ø 1st step (on the coupling side): 22 mm · Ø 2nd shoulder (on the clutch side): 17 mm · Ø 3rd step (on the clutch side): 15 mm · Length of shoulder (ignition side): 26.3 mm · Number of gears: 1 pcs · Area of application: High End · Area of application: Racing · Area of application: Tuning
EUR 213.50
Polini intake system 4-folding diaphragm "Big Valve" PHBG / CP carburetor | Puch
Manufacturer: Polini · Mounting type: Screws · Material: Aluminum · Camouflaged: No · Material: Plastic · Surface: glass bead blasted · Number of flaps: 4 pcs · Membrane material: Carbonite · Thread type: M5x0.8 (standard thread) · Thick membrane platelets: 0.3 mm · Number of fixing points: 4 pcs · Area of application: Racing · Area of application: Tuning · Ø mounting hole: 5.2 mm · Ø outside: 24 mm · Ø inside: 28.6 mm
EUR 166.00
Attention: new opening hours from 16.02.2026 & new evening sale on Thursday 17:30-20:00
