39 mm racing cylinder incl. head for your Zündapp Belmondo moped / moped.
Suitable for Zündapp Belmondo mopeds, Zündapp Bergsteiger M25/M50 mopeds, as well as Alpa Spezial 3000 and Alpa Black River small motorcycles which have a Zündapp type 247 engine installed.
The high-quality racing kit including cylinder head from the quality brand swiing® ingenious paired with the legendary VERTEX piston in OEM quality is guaranteed to exceed all expectations and set new milestones in the moped scene.
With the right setting, you can get a powerful 2.8 hp on the rear wheel. For those who want a little more steam, they can switch to the 44 mm tuning cylinder, with which an incredible, tested 5.9 hp is possible.
The following attributes characterize the cylinder:
- Nikasil coating for optimum lubrication and durability
- Split transfer ports for optimized mixture flow
- Fit on the cylinder head for perfect guidance
- pore-clean surface
- All sealing and connection surfaces are flush-mounted
All instructions for installing / retracting the cylinder are explained in the video.
As shown, the two silentblocs for the cylinder head and high-quality stud bolts for the intake and exhaust are included in the scope of delivery.
Please select the desired cylinder head with or without decompression bore in the selection field.
Note: The original stud bolts of the engine housing are too short due to the height of the cylinder kit and must be replaced by longer bolts (item 24319).
For Zündapp engines with an 85 mm short connecting rod, this must first be converted to a long connecting rod with a length of 91 mm (center - center) in order to use the cylinder.
When purchasing this complete set, there is a substantial percentage off the retail price of the individual parts.
Exceptional product for the highest demands of the quality brand swiing®.
Montageanleitung
Hole pattern [mm]: 44 x 44 · Inlet window: 20.7 x 13 · Manufacturer: swiing® ingenious parts · Material: Aluminum · Surface: sandblasted · Displacement: 50 ccm · Crankshaft stroke: 42 mm · Nominal diameter: 39 mm · Ø cylinder neck: 48 mm · Ø outlet inside: 18.6 mm · Thread inlet: M6x1 (standard thread) · Hole spacing inlet: 40 mm · Ø piston pin (B): 12 mm · Outlet type: slanted · Hole spacing outlet: 40 mm · Thread outlet: M6x1 (standard thread) · Number of fixing points: 4 pcs · Decompressor: No · Camouflaged: No · Area of application: Tuning
Manufacturer: swiing® revival parts · Material: Rubber, Steel · Ø inside: 8.2 mm · Ø outside: 19 mm · Ø Bundle: 25.5 mm · Total length: 21 mm
| Nominal diameter | 39 mm |
| Manufacturer | swiing® ingenious parts |
| Material | Aluminum |
| Displacement | 50 ccm |
| Crankshaft stroke | 42 mm |
| Surface | sandblasted |
| Ø cylinder neck | 48 mm |
| Ø outlet inside | 18.6 mm |
| Inlet window | 20.7 x 13 |
| Thread inlet | M6x1 (standard thread) |
| Hole spacing inlet | 40 mm |
| Ø piston pin (B) | 12 mm |
| Area of application | Tuning |
| Outlet type | slanted |
| Hole pattern [mm] | 44 x 44 |
| Hole spacing outlet | 40 mm |
| Thread outlet | M6x1 (standard thread) |
| Number of fixing points | 4 pcs |
| Camouflaged | No |
| Zündapp | Belmondo (Type 247-71) |
Ratings
Accessories & related products
swiing® ingenious piston 39 mm Vertex | Zündapp Belmondo, Bergsteiger
Manufacturer: swiing® ingenious parts · Ø outside piston (A): 38.95 mm · Compression height (C): 26.3 mm · Curvature (D): 1.5 mm · Total piston height (E): 51.5 mm · Number of piston rings (F): 1 pcs · Piston ring mold: Rectangular ring · Nominal diameter: 39 mm · Piston ring impact: Oblique push · Piston ring height: 1.5 mm · Ø piston pin (B): 12 mm · Weight piston kit: 82 g
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swiing® revival connecting rod | Zündapp
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swiing® ingenious 39 mm cylinder kit original with head | Zündapp Belmondo
Nominal diameter: 39 mm · Manufacturer: swiing® ingenious parts · Material: Aluminum · Surface: sandblasted · Displacement: 50 ccm · Crankshaft stroke: 42 mm · Ø cylinder neck: 48 mm · Ø Inlet inside: 9.2 mm · Thread inlet: M6x1 (standard thread) · Hole spacing inlet: 40 mm · Ø piston pin (B): 18.5 mm · Outlet type: slanted · Hole spacing outlet: 40 mm · Thread outlet: M6x1 (standard thread) · Number of fixing points: 4 pcs · Hole pattern [mm]: 44 x 42 · Camouflaged: No
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swiing® ingenious 44 mm cylinder kit tuning with head | Zündapp Belmondo
Nominal diameter: 44 mm · Manufacturer: swiing® ingenious parts · Material: Aluminum · Surface: sandblasted · Displacement: 65 ccm · Crankshaft stroke: 42 mm · Ø cylinder neck: 48 mm · Ø outlet inside: 21.3 mm · Inlet window: 22.3 x 15.5 · Thread inlet: M6x1 (standard thread) · Hole spacing inlet: 38 mm · Ø piston pin (B): 12 mm · Outlet type: slanted · Hole spacing outlet: 42 mm · Thread outlet: M6x1 (standard thread) · Number of fixing points: 4 pcs · Hole pattern [mm]: 44 x 44 · Camouflaged: No · Area of application: Tuning
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Collection only possible with online purchase and appointment.
