
Original 40.0 x 1.42 mm compression ring (trapezoidal ring) suitable for Beta pistons on Pony Cross & GTX mopeds / mopeds with Beta 521 engines.
Attention: Only suitable for original Beta pistons, if a Meteor piston is installed, the Meteor piston ring 40 x 1.5 must be used, you will find this in the accessories section.
Installation note: The one-sided trapezoidal piston ring must be installed with the slanted side facing the cylinder head. If it is installed upside down, the ring will jam in the piston ring groove, resulting in damage to the piston and cylinder!
Ø outer (A): 40.00 mm
Height (B): 1.42 / nominal dimension 1.5 mm
Thickness (C): 1.60 mm
Piston ring shape: Trapezoidal ring
Piston ring joint: Internal locking (IS)
The scope of delivery corresponds to one piece.
You will find the appropriate assembly tool and lubricant in the accessories section.
Original Pony spare part number: A8112
| Nominal diameter | 40 mm |
| Manufacturer | Pony |
| Area of application | Original |
| Thick piston ring | 1.6 mm |
| Piston ring impact | Internal fuse (IS) |
| Height | 1.42 mm |
| Piston ring mold | Trapezoidal ring |
| Pony / Cilo (Beta 521 & 512) | Beta 512 Beta 521 (engine) |
Accessories & related products
Meteor piston 40 mm "G" (A8103) | Beta 521 & 512
Manufacturer: Meteor · Nominal diameter: 40 mm · Ø outside piston (A): 39.95 mm · Ø piston pin (B): 12 mm · Compression height (C): 27.9 mm · Curvature (D): 4.15 mm · Total piston height (E): 52 mm · Number of piston rings (F): 2 pcs · Piston ring mold: Rectangular ring · Piston ring impact: Flank safety device (FS) · Piston ring height: 1.5 mm · Weight piston kit: 83 g
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Manufacturer: Meteor · Nominal diameter: 40 mm · Ø outside piston (A): 39.93 mm · Ø piston pin (B): 12 mm · Compression height (C): 27.9 mm · Curvature (D): 4 mm · Total piston height (E): 52 mm · Number of piston rings (F): 2 pcs · Piston ring mold: Rectangular ring · Piston ring impact: Internal fuse (IS) · Piston ring height: 1.5 mm · Weight piston kit: 83 g
CHF 74.90
Not in stock
Meteor piston 40 mm "N" (A8104) | Beta 521 & 512
Manufacturer: Meteor · Nominal diameter: 40 mm · Ø outside piston (A): 39.94 mm · Ø piston pin (B): 12 mm · Compression height (C): 28 mm · Curvature (D): 4 mm · Total piston height (E): 52 mm · Number of piston rings (F): 2 pcs · Piston ring mold: Rectangular ring · Piston ring impact: Internal fuse (IS) · Piston ring height: 1.5 mm · Thick piston ring: 1.7 mm · Weight piston kit: 83 g
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40 mm cylinder kit original engine | Beta 521 & 512
Manufacturer: Pony · Area of application: Original · Material: Gray cast iron · Crankshaft stroke: 39 mm · Nominal diameter: 40 mm · Displacement: 50 ccm · Ø piston pin (B): 12 mm · Number of fixing points: 4 pcs · Outlet type: straight · Thread outlet: M6x1 (standard thread)
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