Description
Features: Kits include aluminum cylinder with nickel-carbide coating designed with larger water jackets Includes Forged piston, rings, clips and pin Athena top-end gasket set includes required seals and hardware Easy-to-follow step-by-step installation instructions Most are bolt-on; no machining required except where noted
Athena Big Bore Cylinder Kit Item # 559420
Description
Features:
- Kits include aluminum cylinder with nickel-carbide coating designed with larger water jackets
- Includes Forged piston, rings, clips and pin
- Athena top-end gasket set includes required seals and hardware
- Easy-to-follow step-by-step installation instructions
- Most are bolt-on; no machining required except where noted
Part Numbers for Athena Big Bore Cylinder Kit
Fitment for Parts Athena Big Bore Cylinder Kit
This part fits the following vehicles:
Reviews
Rated 5 out of
5
by
JOEH from
Great price for what you get
Arrived early, price was great. comes with everything you need to do the big bore kit. came with fuel filter too which was nice. fits together like OEM and with good instructions. lots of compression. really impressed and will buy again for sure
Date published: 2022-03-07
Rated 5 out of
5
by
Moose from
Great kit
My first time buying Athena big bore kit and I was amazed with all it came with. Bolted right up bike starts first kick. Engine not broken in yet so no idea if it made increase in power
Date published: 2022-10-10
Questions
What is the displacement of this kit?
This item is vehicle specific, so you need to enter the year, make and model of your vehicle on the product page to get the correct part for your bike. Athena do not provide us with the displacements of these kits
Date published: 2022-03-28
Does the require using a different crank shaft?
No, the stroke does not change with this kit. A new connecting rod would mean splitting the case and having the whole bottom end rebuilt - you just pull the top end off, switch the piston and slide the new cylinder on (more or less).
Date published: 2023-09-10
Does the Big Bore Kit come with new Fuel Injection Setting?
Mine didn't.
Date published: 2021-01-03