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 |
| Number of fixing points | 4 pcs |
| Inlet window | 26 x 21 |
| Hole pattern [mm] | 44 x 44 |
| Thread inlet | M5x0.8 (standard thread) |
| Ø piston pin (B) | 12 mm |
| Outlet type | straight |
| Hole spacing outlet | 42 mm |
| Thread outlet | M6x1 (standard thread) |
| Hole spacing inlet | 32 mm, 39 mm |
| Area of application | Tuning, Racing |
| 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 · Number of fixing points: 4 pcs · Total length: 140 mm · Hole pattern [mm]: 44 x 44 · Candle thread: short · Decompressor: No · Width: 135 mm · Height: 55 mm · Area of application: Tuning
EUR 66.30
Polini piston 43.5 mm type A | Puch
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 · Nominal diameter: 43.5 mm · 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
EUR 116.80
Membrane transpacer Polini Trapez 12 mm aluminum | Puch ZA50
Material: Aluminum · Surface: blank · Area of application: Tuning · Width: 42.5 mm · Width: 46 mm · Total length: 50 mm · Ø mounting hole: 5.4 mm · Thickness: 12 mm · Number of fixing points: 4 pcs · Hole pattern [mm]: 32 / 36 x 39 · Mounting type: Screws
EUR 36.80
Membrane transpacer Polini Trapez 6 mm aluminum | Puch ZA50
Material: Aluminum · Surface: blank · Area of application: Tuning · Width: 46 mm · Total length: 50 mm · Ø mounting hole: 5.4 mm · Thickness: 6.15 mm · Number of fixing points: 4 pcs · Hole pattern [mm]: 32 / 36 x 39 · Mounting type: Screws
EUR 33.10
Polini 43.5 mm cylinder kit reed valve with head | Puch
Manufacturer: Polini · Material: Aluminum · Surface: Nickel silicon carbide (colloquially known as Nikasil) · Area of application: Racing · Area of application: Tuning · 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 · Hole spacing inlet: 39 mm · Number of fixing points: 4 pcs · Inlet window: 26 x 21 · Thread inlet: M5x0.8 (standard thread) · Hole pattern [mm]: 44 x 44 · Ø piston pin (B): 12 mm · Outlet type: straight · Hole spacing outlet: 42 mm · Thread outlet: M6x1 (standard thread) · Camouflaged: No
EUR 492.10
Polini 43.5 mm cylinder head | Puch
Manufacturer: Polini · Material: Aluminum · Area of application: Racing · Area of application: Tuning · Ø cylinder: 43.5 mm · Height: 48 mm · Width: 135 mm · Total length: 145 mm · Number of fixing points: 4 pcs · Hole pattern [mm]: 44 x 44 · Candle thread: long · Decompressor: No
EUR 98.30
Polini intake system 4-folding diaphragm "Big Valve" PHBG / CP carburetor | Puch
Manufacturer: Polini · Material: Aluminum · Camouflaged: No · Material: Plastic · Surface: glass bead blasted · Thread type: M5x0.8 (standard thread) · Number of flaps: 4 pcs · Membrane material: Carbonite · Thick membrane platelets: 0.3 mm · Ø mounting hole: 5.2 mm · Number of fixing points: 4 pcs · Ø inside: 28.6 mm · Ø outside: 24 mm · Mounting type: Screws · Area of application: Racing · Area of application: Tuning
EUR 172.20
New
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 · Height: 50.6 mm · Width: 164 mm · Total length: 169 mm · Number of fixing points: 4 pcs · Hole pattern [mm]: 44 x 44 · Candle thread: short · Decompressor: No
EUR 233.70
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 Stranded wire: 1.25 mm · Cable length: 2200 mm · Ø nipple: 3 mm · Nipple length: 5 mm · Number of components: 1 pcs · Manufacturer: Made in Germany · Material: Steel · Surface: galvanized (blue) · Nipple shape: Cylinder · Area of application: Standard
EUR 2.95
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 · Number of fixing points: 4 pcs · Total length: 140 mm · Hole pattern [mm]: 44 x 44 · Candle thread: short · Decompressor: No · Width: 135 mm · Height: 55 mm · Area of application: Tuning
EUR 66.30
Polini CP 19 mm carburetor (hand choke)
Manufacturer: Polini · Material: Aluminum · Component group Carburetor: Carburetor complete · Area of application: High End · Area of application: Performance · Area of application: Racing · Area of application: Tuning · Carburetor type: CP · Nominal diameter: 19 mm · Width: 66 mm · Total length: 73.5 mm · Height: 135 mm · Ø fuel hose connection: 6 mm · Ø fuel hose connection: 7 mm · Ø Internal connection: 24 mm · Ø without reducing sleeve: 26 mm · Ø Inside entrance: 19 mm · Ø Output inside: 19 mm · Mounting type: Plug connection clamped · Ø Air filter connection: 46 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 · Size of secondary nozzle: 42
EUR 172.20
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 · Material: Aluminum · Material: Steel · Cheek type: Full cheeks · Area of application: High End · Area of application: Racing · Area of application: Tuning · Crankshaft stroke: 43 mm · Connecting rod length center-center: 90 mm · Thread length: 11 mm · Thread length: 15 mm · Total length of crankpin on clutch side: 74 mm · Total length crankpin ignition side: 66 mm · Ø crank webs: 69.9 mm · Ø Connecting rod eye: 15 mm · Weight: 968 g · Thread type: MF10x1 (fine pitch thread) · 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
EUR 221.40
Not in stock
Polini intake system 4-folding diaphragm "Big Valve" PHBG / CP carburetor | Puch
Manufacturer: Polini · Material: Aluminum · Camouflaged: No · Material: Plastic · Surface: glass bead blasted · Thread type: M5x0.8 (standard thread) · Number of flaps: 4 pcs · Membrane material: Carbonite · Thick membrane platelets: 0.3 mm · Ø mounting hole: 5.2 mm · Number of fixing points: 4 pcs · Ø inside: 28.6 mm · Ø outside: 24 mm · Mounting type: Screws · Area of application: Racing · Area of application: Tuning
EUR 172.20
Attention: new opening hours from 16.02.2026 & new evening sale on Thursday 17:30-20:00
