Cyl Works 07-13 Yamaha YFM 700 FG Grizzly 4x4 700cc +3mm Big Bore Cyl Kit 727cc 9.2:1 Comp 105mm

If you're looking to get more power out of your 2007-2013 Yamaha YFM 700 FG Grizzly 4x4, this big bore cylinder kit from Cylinder Works is a solid option. This kit takes your 700cc engine and increases its displacement to 727cc, giving you a noticeable bump in horsepower and torque. It's designed to look like the original cylinder but perform much better, making it a great way to upgrade your ATV's performance without a radical visual change.

The kit includes a hand-matched Vertex piston and a complete top-end gasket set with O-rings, so you have most of what you need to get the job done. The cylinder itself is made from a well-built 2618 aluminum alloy, which is known for being strong and durable. This material choice helps ensure the cylinder can handle the increased demands of a bigger displacement engine. The compression ratio comes in at 9.2:1, which is a good balance for improved performance while still being manageable for pump gas in most situations.

This kit is a significant upgrade for your Grizzly's engine. It's a good idea to have a service manual handy for your specific model year during installation, as proper torque specs and assembly procedures are crucial for reliability. You'll also want to ensure your fuel and ignition systems are in good shape to take full advantage of the increased displacement.