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.
| Nominal diameter | 43.5 mm |
| Manufacturer | Polini |
| Material | Aluminum |
| Area of application | Tuning, Racing |
| Surface | Nickel silicon carbide (colloquially known as Nikasil) |
| Displacement | 65 ccm |
| Crankshaft stroke | 43 mm |
| Ø cylinder neck | 48 mm |
| Ø outlet inside | 22 mm |
| Inlet window | 26 x 21 |
| Thread inlet | M5x0.8 (standard thread) |
| Hole spacing inlet | 32 mm, 39 mm |
| Number of fixing points | 4 pcs |
| Ø piston pin (B) | 12 mm |
| Outlet type | straight |
| Hole spacing outlet | 42 mm |
| Thread outlet | M6x1 (standard thread) |
| Hole pattern [mm] | 44 x 44 |
| Camouflaged | No |
| Puch | E50 ZA50 (air-cooled) Z50 (X30 Sport) |
Ratings
Accessories & related products
GPO 43.5 mm cylinder head with O-ring, Polini Tuning new version | Puch
Manufacturer: GPO · Material: Aluminum · Surface: sandblasted · Ø cylinder: 43.5 mm · Total length: 140 mm · Width: 135 mm · Height: 55 mm · Candle thread: short · Number of fixing points: 4 pcs · Hole pattern [mm]: 44 x 44 · Decompressor: No · Area of application: Tuning
CHF 53.90
Polini piston 43.5 mm type A | Puch
Nominal diameter: 43.5 mm · Manufacturer: Polini · Ø outside piston (A): 43.45 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 · Piston ring mold: Rectangular ring · Piston ring impact: Internal fuse (IS) · Piston ring height: 1.2 mm · Ø piston pin (B): 12 mm · Tolerance group: A · Weight piston kit: 93 g
CHF 94.90
Membrane transpacer Polini Trapez 12 mm aluminum | Puch ZA50
Width: 42.5 mm · Width: 46 mm · Material: Aluminum · Area of application: Tuning · Surface: blank · Total length: 50 mm · Thickness: 12 mm · Mounting type: Screws · Number of fixing points: 4 pcs · Ø mounting hole: 5.4 mm · Hole pattern [mm]: 32 / 36 x 39
CHF 29.90
Membrane transpacer Polini Trapez 6 mm aluminum | Puch ZA50
Width: 46 mm · Material: Aluminum · Area of application: Tuning · Surface: blank · Total length: 50 mm · Thickness: 6.15 mm · Mounting type: Screws · Number of fixing points: 4 pcs · Ø mounting hole: 5.4 mm · Hole pattern [mm]: 32 / 36 x 39
CHF 26.90
Polini 43.5 mm cylinder kit reed valve with head | Puch
Nominal diameter: 43.5 mm · Manufacturer: Polini · Material: Aluminum · Area of application: Racing · Area of application: Tuning · Surface: Nickel silicon carbide (colloquially known as Nikasil) · Displacement: 65 ccm · Crankshaft stroke: 43 mm · Ø cylinder neck: 48 mm · Ø outlet inside: 22 mm · Inlet window: 26 x 21 · Thread inlet: M5x0.8 (standard thread) · Number of fixing points: 4 pcs · Hole spacing inlet: 32 mm · Hole spacing inlet: 39 mm · Ø piston pin (B): 12 mm · Outlet type: straight · Hole spacing outlet: 42 mm · Thread outlet: M6x1 (standard thread) · Hole pattern [mm]: 44 x 44 · Camouflaged: No
CHF 399.90
Polini 43.5 mm cylinder head | Puch
Width: 135 mm · Manufacturer: Polini · Material: Aluminum · Area of application: Racing · Area of application: Tuning · Ø cylinder: 43.5 mm · Total length: 145 mm · Height: 48 mm · Candle thread: long · Number of fixing points: 4 pcs · Hole pattern [mm]: 44 x 44 · Decompressor: No
CHF 79.90
Polini intake system 4-folding diaphragm "Big Valve" PHBG / CP carburetor | Puch
Ø inside: 28.6 mm · Ø outside: 24 mm · Manufacturer: Polini · Material: Aluminum · Material: Plastic · Area of application: Racing · Area of application: Tuning · Surface: glass bead blasted · Number of flaps: 4 pcs · Membrane material: Carbonite · Thick membrane platelets: 0.3 mm · Thread type: M5x0.8 (standard thread) · Mounting type: Screws · Number of fixing points: 4 pcs · Ø mounting hole: 5.2 mm · Camouflaged: No
CHF 139.90
New
Hot 
43.5 mm cylinder head CNC Tuning | Puch E50
Manufacturer: Made in Switzerland · Material: Aluminum · Area of application: Tuning · Height: 50.6 mm · Ø cylinder: 43.5 mm · Candle thread: short · Width: 164 mm · Total length: 169 mm · Hole pattern [mm]: 44 x 44 · Decompressor: No · Number of fixing points: 4 pcs
CHF 189.90
Not in stock
Explore categories from Cylinder
Moped fans also bought
Hot
Gas cable Ø 1.25 mm x 220 cm (cylindrical nipple) Bing
Ø nipple: 3 mm · Nipple length: 5 mm · Manufacturer: Made in Germany · Area of application: Standard · Material: Steel · Surface: galvanized (blue) · Ø Stranded wire: 1.25 mm · Nipple shape: Cylinder · Cable length: 2200 mm · Number of components: 1 pcs
CHF 2.40
GPO 43.5 mm cylinder head with O-ring, Polini Tuning new version | Puch
Manufacturer: GPO · Material: Aluminum · Surface: sandblasted · Ø cylinder: 43.5 mm · Total length: 140 mm · Width: 135 mm · Height: 55 mm · Candle thread: short · Number of fixing points: 4 pcs · Hole pattern [mm]: 44 x 44 · Decompressor: No · Area of application: Tuning
CHF 53.90
Polini CP 19 mm carburetor (hand choke)
Nominal diameter: 19 mm · Manufacturer: Polini · Material: Aluminum · Component group Carburetor: Carburetor complete · Carburetor type: CP · Total length: 73.5 mm · Width: 66 mm · Height: 135 mm · Ø without reducing sleeve: 26 mm · Ø Inside entrance: 19 mm · Ø Internal connection: 24 mm · Mounting type: Plug connection clamped · 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 thread: M5x0.8 (standard thread) · Nozzle block: 35-12 · Camouflaged: No · Nozzle size: 66 · Area of application: High End · Area of application: Performance · Area of application: Racing · Area of application: Tuning · Size of secondary nozzle: 42
CHF 139.90
Hot
swiing® ingenious crankshaft "High End" with mounted bearings | Puch E50
Dimension needle bearing: 12 / 15 x 14.2 mm (axe 12) · Manufacturer: swiing® ingenious parts · Area of application: High End · Area of application: Racing · Area of application: Tuning · Material: Aluminum · Cheek type: Full cheeks · Material: Steel · 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 · Thread type: MF10x1 (fine pitch thread) · Thread length: 11 mm · Thread length: 15 mm · Ø Connecting rod eye: 15 mm · Weight: 968 g · Ø piston pin (B): 12 mm · Ø Bearing seat (clutch side): 17 mm · Ø Bearing seat (ignition side): 17 mm · 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
CHF 179.90
Polini intake system 4-folding diaphragm "Big Valve" PHBG / CP carburetor | Puch
Ø inside: 28.6 mm · Ø outside: 24 mm · Manufacturer: Polini · Material: Aluminum · Material: Plastic · Area of application: Racing · Area of application: Tuning · Surface: glass bead blasted · Number of flaps: 4 pcs · Membrane material: Carbonite · Thick membrane platelets: 0.3 mm · Thread type: M5x0.8 (standard thread) · Mounting type: Screws · Number of fixing points: 4 pcs · Ø mounting hole: 5.2 mm · Camouflaged: No
CHF 139.90
Attention: new opening hours from 16.02.2026 & new evening sale on Thursday 17:30-20:00
