Oil seals Carrozzeria Forged wheels.
Carrozzeria Forged wheels now come with double lip sealed bearings and do not require the use of oil seals to protect bearings from normal riding conditions. However, oil seals are often used to hold spacers captive. Most Carrozzeria wheels made by Core Moto since 2017 use front oil seals with captive spacers. All rear wheels use an oil seal to hold the (center rear wheel) spacer between the sprocket carrier and wheel captive.

Installation requires that the sweep seal / friction zone is lubricated with proper grease.

These seals can be used in other wheels so long as properly sized.

Most Carrozzeria wheels sold in 2017 came with an exploded view diagram of all wheel components for your specific model, this will also detail oil seal PN.

Oil seals are sized by ID-OD-Thickness in mm.
Example of part number: OS32527 = 32mm ID / 55mm OD / 7mm Thickness
Available sizes are
P/N: OS40556 – MEASUREMENTS 40-55-6 (typical center rear wheel)
P/N: OS40558 – MEASUREMENTS 40-55-8
P/N: OS36558 – MEASUREMENTS 36-55-8
P/N: OS40527 – MEASUREMENTS 40-52-7
P/N: OS32527 – MEASUREMENTS 32-52-7 (typical front spacer on CMF13517 front wheel)
P/N: OS35476 – MEASUREMENTS 35-47-6

Sale includes 1 oil seal, choose the proper size.

Additional information

Oil seal Part number

OS32527, OS35476, OS36558, OS40527, OS40556, OS40558


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