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Wiseco K1100 Suzuki Forged Piston Kit CR - GS1000 2-Valve 73.5mm 10.25 1

(1978-1979 Suzuki GS1000; 1980-1981 Suzuki GS1000G; 1980-1981 Suzuki GS1000GL; 1979-1980 Suzuki GS1000S)

Part of: Wiseco Pistons Forged Piston Kit Suzuki

Other options in this family: Wiseco Pistons SK1036 Wiseco Pistons 755M05600 Wiseco Pistons SK1205 Wiseco Pistons 40105M09900 Wiseco Pistons 4576M08200

Manufacturer

Picture for manufacturer Wiseco Pistons

Part Number

K1100
10 reviews
Sale Price

$844.99

Estimated ship date Tuesday, November 24

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Product Details

The Wiseco K1100 is a complete forged top-end piston kit designed for the Suzuki GS1000 2-valve engine. Featuring a 73.5mm bore diameter and a 10.25:1 compression ratio, this kit delivers a 3.5mm oversize displacement increase — bumping displacement to approximately 1100cc — while maintaining a streetable, performance-ready setup.

Key Features:

  • Forged from high-silicon, low-expansion aluminum alloy for maximum strength, reduced weight, improved heat transfer, and extended service life
  • 73.5mm bore / 10.25:1 compression ratio — 3.5mm oversize
  • Dedicated forging design optimizes the strength-to-weight ratio for each specific application
  • Innovative piston skirt geometry engineered to maximize horsepower and torque output
  • Race-ready dome finish with smooth edges for improved combustion chamber flow
  • Includes piston, high-performance ring set (2894XC), alloy wrist pin, and circlips — everything needed for a complete top-end rebuild
  • Compatible with cast iron, chrome, Nikasil, and boron composite cylinder bore compositions
  • Engineered, forged, and machined in the USA at Wiseco's facility in Mentor, OH

The Wiseco K1100 kit uses individual piston sets (part number 4066M07350), with a full 1100cc build requiring four sets. This kit is a direct rebore of the standard GS1000 cylinders — no sleeving required. Ideal for riders restoring or upgrading a classic Suzuki GS1000 (1978–1981) who want proven forged piston performance with a bolt-in fit.

Products specifications

Fits

1978-1979 Suzuki GS1000; 1980-1981 Suzuki GS1000G; 1980-1981 Suzuki GS1000GL; 1979-1980 Suzuki GS1000S

Quick and easy.

E-Z as pie !!!

great experience. parts even came with installation instructions, which standard replacement cars parts typically do not.

Great prices

I would like the website to get more specific for the model of vehicle i.e. engine, transmission.

it was veryeay to order very good prices fast shipping

Great A++

I ordered the Yellow Top D27F battery for my 2010 Tundra. It's a nice fit and I needed a more powerful battery for the cold months and my extra electronics, winch and lighting...we like to night wheel and I don't want a standard battery to leave us stuck in the woods. I have Yellow Tops in the Tundra, Jeep and STi...next and last will be my wife's Murano. Highly reliable battery and in my 10-12 years of owning these batteries, they are flawless and perfect. I was in Kansas working during the high heat spell near Hill City and the 116 degree heat killed my factory battery, straight to the Yellow Top for a replacement and I had no problems thru the duration of the job. Autoplicity had a great price and the shipping was perfect and fast. Only issue on the entire order from Autoplicity is the battery and packaging. I know how Optima packages their batteries with the tray portion and protection on the top. This battery was just in a box with formed protective packaging around it. The Yellow portion on top is beat up and scratched. I'm proud of how my engine bay looks and having a battery that looks 2-3 yrs old on appearance is something I am not thrilled with. I tested the voltage and it was good, just no idea if this is a new battery or not? Unfortunately, I can't return it because my truck has been just sitting in the driveway for three weeks since the battery is shot and I've been waiting for this battery.

Good Price, easy online browsing.

2nd time ordering. Very satisfied.

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