I believed it to be "whole motor kit" because head gasket is included.
from the ad:
Wiseco (K1100) 73.5mm 10.25:1 Compression Ratio 4-Stroke Motorcycle Top End Piston Kit
Ships from and sold by
Estimated Delivery Date: Wednesday, Sept. 23 when you choose Two-Day Shipping at checkout.
- Fits: Suzuki GS1000 1978-81
- Dedicated forgings are used for superior strength to weight ratio utilizing aerospace alloy with a dome designed for improved flame travel and detailed skirt shape and profiles for stability and smooth operation in the cylinder bore
- Compared to cast pistons, forgings are tougher and more durable, and will stand up to the abuse that high performance motorsport applications require
- Each Wiseco piston is designed with the proper installed clearance to produce the most power, least wear, and best seal at running temperature, for each application
- 73.5mm bore; 10.25:1 compression ratio; total displacement 1100cc; includes head gasket

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