Castle Nut steel S45C, h 8,2mm,
SIP, for clutch,
for Vespa 125 V1-TS/150 VL
-Super/160 GS/180 SS/Rally
/PX80-200/PE/Lusso -> 1994
Daily, parts from original manufacturers such as PIAGGIO or OEM are taken out of production. This means there is no other alternative to used parts if you need a missing disk, clip or bracket. Nerve wracking and time consuming at the least, trying to run down those little missing necessary parts.
That's why we decided to produce a number of parts in high quality under the name SIP Spare Parts. Our goal is to get stranded Vespas needing essential small parts back on the road. A major job for small parts ...
All geared Vespa models produced up to 1994 use a castle nut to hold the clutch in place on the crankshaft. The SIP castle nut is similar to the OE PIAGGIO item. We have redesigned and optimised it slightly with an increased thread length, precise dimensions to improve the castle nut adapter contact and is produced from high quality tooling steel for added durability.
OEM Numbers (for the purpose of comparison)
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clutch nut, castle nut, stub axle nut, crown nut