How much do stock pistons weigh?

[jikemenkins]

Have no data for our CB1100, but
For Honda CBR 1000RR, OEM parts:
Wrist Pin​ - 49​ gr
Piston (no ring)​ - 178​ gr
Con-Rod + Bolts​ - 318​ gr
Variation is about +/- 1 gram for stock.

I presume for a bike like the CBR1000RR, Honda would have made a max-effort attempt to reduce mass here. Probably not a good apples-to apples, or even apples-to-oranges comparison. Thank you for the data point though! In my searching I've found a lot of 1983 cb1100F aftermarket forged piston weight data.

The one person on here that may have ever taken them out to weigh them would be PowerDubs.

Without question! If I ever get the data I'll come back here to share.

I have to ask: why?

I'd like to calculate piston acceleration forces.