• Registration

Raptor 660 Big Bore Kit

VS $785.00 MSRP
$675.00 SAVINGS

Out of stock

    Quick Look

  • Complete 686cc Big Bore Cylinder Kit
  • No Case Machining or Modifications Required for Installation
  • 686cc Displacement; 10:1 Compression
  • 102 mm x 84 mm Bore and Stroke
  • Original Equipment Type Piston Kit and Gasket
  • Improved Casting Design with Larger Water Jackets
  • This item includes: Cylinder, Piston, Piston Rings, Wristpin, Circlips (2)
3YF-11181-00-00, 5KM-11310-00-00
3YF-11351-00-00, 2C6-11603-00-00
93450-24028-00, 3YF-11631-00-X0
3YF-11633-01-00, 90201-102G9-00
90105-10649-00, 90105-09648-00
Fits My Vehicle?
This Cylinder Kit fits
Make Type Model Year

This kit fits: Yamaha Raptor 660 (2001-2005), Yamaha Grizzly 660 (2002-2008) and Yamaha Rhino 660 (2004-2007).  Double-check our table below to ensure this part will work with your machine.

The Raptor 660 Big Bore Kit includes everything you need to rebuild your top end:  a brand-new 102mm cylinder, 10:1 piston kit, and a high performance gasket set for easy installation right out of the box - no boring or honing required.

Normally, big bore kits increase engine displacement by increasing the cylinder bore size, the piston compression, or both. This kit increases your engine displacement from the stock displacement of 660cc to 686cc, by increasing the bore size from 100 mm to 102mm and the compression from stock specifications of 9.2:1 to 10:1.

The larger water jackets help your new top end cool your engine more efficiently as it produces more power. In fact, our kit offers greater cooling capability for more reliable performance. You don't want to end up with over-heating problems down the road.

Another performance enhancement is the high-compression hardened aluminum piston. It's designed to help your engine keep up with your increased displacement and compression.

All of the parts necessary for a rebuild are included with no modifications needed.

Want more out of your Raptor 660? Of course you do! You’re a DIY gear-head who’s moded more machines than they can count. So take your quad to the next level and increase your machine’s power with our Raptor 660 Big Bore Kit.

What are you waiting for? Increase your ATV’s performance by adding our hassle-free kit to your cart today. We offer fast shipping, top-notch customer service, and quality parts at fantastic prices.



All ground shipments are sent FREE within mainland USA . Read more...

You may Return or Exchange any part(s) back to us within 45 days from the payment date. See conditions.


Write Your Own Review

You're reviewing: Raptor 660 Big Bore Kit

How do you rate this product? *

  1 star 2 stars 3 stars 4 stars 5 stars
Share My Ride

Customer Product Images

Share your ride! Upload your pics and get rewards!
Start Uploading My Own Images

Upload files:
Select Files *
Make *
Model *
Year *
Personal info:
Username *
My favourite terrain is