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 |
| Camouflaged | No |
| 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 mm |
| Number of fixing points | 4 pcs |
| 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 |
| 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
Manufacturer: GPO · Material: Aluminum · Ø cylinder: 43.5 mm · Surface: sandblasted · Total length: 140 mm · Hole pattern [mm]: 44 x 44 · Candle thread: short · Width: 135 mm · Height: 55 mm · Decompressor: No · Number of fixing points: 4 pcs · Area of application: Tuning
EUR 66.30
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
EUR 116.80
Membrane transpacer Polini Trapez 12 mm aluminum | Puch ZA50
Thickness: 12 mm · Area of application: Tuning · Material: Aluminum · Surface: blank · Width: 42.5 mm · Width: 46 mm · Total length: 50 mm · Hole pattern [mm]: 32 / 36 x 39 · Mounting type: Screws · Ø mounting hole: 5.4 mm · Number of fixing points: 4 pcs
EUR 36.80
Membrane transpacer Polini Trapez 6 mm aluminum | Puch ZA50
Thickness: 6.15 mm · Area of application: Tuning · Material: Aluminum · Surface: blank · Width: 46 mm · Total length: 50 mm · Hole pattern [mm]: 32 / 36 x 39 · Mounting type: Screws · Ø mounting hole: 5.4 mm · Number of fixing points: 4 pcs
EUR 33.10
Polini 43.5 mm cylinder kit reed valve with head | Puch
Nominal diameter: 43.5 mm · Manufacturer: Polini · Camouflaged: No · Area of application: Racing · Area of application: Tuning · Material: Aluminum · 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 mm · Thread inlet: M5x0.8 (standard thread) · Hole pattern [mm]: 44 x 44 · Ø piston pin (B): 12 mm · Number of fixing points: 4 pcs · Outlet type: straight · Hole spacing outlet: 42 mm · Thread outlet: M6x1 (standard thread) · Hole spacing inlet: 32 mm · Hole spacing inlet: 39 mm
EUR 492.10
Polini 43.5 mm cylinder head | Puch
Manufacturer: Polini · Area of application: Racing · Area of application: Tuning · 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 · Number of fixing points: 4 pcs · Decompressor: No
EUR 98.30
Polini intake system 4-folding diaphragm "Big Valve" PHBG / CP carburetor | Puch
Manufacturer: Polini · Camouflaged: No · Area of application: Racing · Area of application: Tuning · Material: Aluminum · 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 · Ø inside: 28.6 mm · Ø outside: 24 mm · Mounting type: Screws · Ø mounting hole: 5.2 mm · Number of fixing points: 4 pcs
EUR 172.20
Hot 
43.5 mm cylinder head CNC Tuning | Puch E50
Manufacturer: Made in Switzerland · Material: Aluminum · Ø cylinder: 43.5 mm · Total length: 169 mm · Width: 164 mm · Height: 50.6 mm · Hole pattern [mm]: 44 x 44 · Candle thread: short · Decompressor: No · Number of fixing points: 4 pcs · Area of application: Tuning
EUR 233.70
Explore categories from Cylinder
Moped fans also bought
GPO 43.5 mm cylinder head with O-ring, Polini Tuning new version | Puch
Manufacturer: GPO · Material: Aluminum · Ø cylinder: 43.5 mm · Surface: sandblasted · Total length: 140 mm · Hole pattern [mm]: 44 x 44 · Candle thread: short · Width: 135 mm · Height: 55 mm · Decompressor: No · Number of fixing points: 4 pcs · Area of application: Tuning
EUR 66.30
Polini CP 19 mm carburetor (hand choke)
Total length: 73.5 mm · Manufacturer: Polini · Material: Aluminum · Camouflaged: No · Component group Carburetor: Carburetor complete · Nominal diameter: 19 mm · Carburetor type: CP · Width: 66 mm · Ø Internal connection: 24 mm · Ø without reducing sleeve: 26 mm · Ø Inside entrance: 19 mm · Mounting type: Plug connection clamped · Ø Output inside: 19 mm · Ø Air filter connection: 46 mm · Height: 135 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 · Nozzle size: 66 · Size of secondary nozzle: 42 · Area of application: High End · Area of application: Performance · Area of application: Racing · Area of application: Tuning
EUR 172.20
swiing® revival gasket gearbox cover engine 1 mm | Puch E50
Ø inside: 106 mm · Ø outside: 116 mm · Manufacturer: swiing® revival parts · Number of components: 1 pcs · Material: Sealing paper · Color: sand-colored · Number of fixing points: 4 pcs · Thickness: 1 mm · Alternative version of the Puch OEM number: 349.1.10.349.1
EUR 4.80
Hot
swiing® ingenious crankshaft "High End" with mounted bearings | Puch E50
Manufacturer: swiing® ingenious parts · Material: Aluminum · Material: Steel · 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 · Weight: 968 g · Number of gears: 1 pcs · Area of application: High End · Area of application: Racing · Area of application: Tuning
EUR 221.40
Polini intake system 4-folding diaphragm "Big Valve" PHBG / CP carburetor | Puch
Manufacturer: Polini · Camouflaged: No · Area of application: Racing · Area of application: Tuning · Material: Aluminum · 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 · Ø inside: 28.6 mm · Ø outside: 24 mm · Mounting type: Screws · Ø mounting hole: 5.2 mm · Number of fixing points: 4 pcs
EUR 172.20
Attention: new opening hours from 16.02.2026 & new evening sale on Thursday 17:30-20:00
