239455, Stop Ring, Aprilia, Derbi, Moto Guzzi, Vespa, Gilera, Piaggio
Guaranteed
Genuine
Piaggio
Parts
The Stop Ring is number 08 in the part drawing below.
The Stop Ring is number 13 in the part drawing below.
The Stop Ring is number 2 in the part drawing below.
Please note this part replaces the following parts:
AP8515017
- Brand(s):
- Aprilia, Derbi, Moto Guzzi, Vespa, Gilera, Piaggio
- Part number:
- 239455
- Description:
- Stop Ring
- Stock Availability:
- Part in stock
Price: EUR 1.21 inc. VAT
Unsure if it’s the right part?
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I found everything I needed at the dealer. You can also get a discount
Andrejs Zonbergs
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Quick delivery.spot on.
john haswell
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Every time, everything perfect!
Christos Petropoulos-trakas
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The parts arrive quickly and on time, they fit perfectly. And it's very convenient that there is a detailed drawing to help you figure out exactly what you're looking for.
Иван Желязков
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Easy to navigate website & reasonable postage considering delivery from the Netherlands to UK. Found what I needed for my 22 year old GSXR. Would definitely use MSP again
Stevie G
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The right parts and fast delivery
Göran Persson
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Perfect, recommended
Szabolcs Banos
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Everthing was good
Sven van Eck
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Was exactly I was expecting good comms , keep me updated so everything was smooth
Mr ROMICA DIMAN
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Fantastic, Genuine parts, Great communication keep up the good work guys
Mark Andrew Brady
The Stop Ring is a genuine spare part manufactured by Piaggio so you have peace of mind the Stop Ring part being sold by Motorcycle Spare Parts is both original and new.
This stop ring (circlip) 239455 is used widely across Piaggio Group small-engine piston assemblies and replaces AP8515017 in catalog references. It’s typically applied as a wrist pin (gudgeon pin) circlip in 2T cylinder-piston-wrist pin units, though it appears across many model families and years in fiches.
Because circlip sizing is critical, match it by fiche position in the cylinder-piston group, not by generic diameter assumptions. Always inspect the groove condition and replace both clips as a pair when servicing a piston to reduce the risk of clip fatigue or improper seating.
