Cylinder Works 06-14 Yamaha YFM 700 R Raptor 700cc +3mm Big Bore Cyl Kit 727cc 9.2:1 Comp 105mm

If you're looking to get more power out of your Yamaha YFM 700 R Raptor, this big bore cylinder kit from Cylinder Works is designed to do just that. This kit is built to increase your engine's displacement from its stock 700cc up to 727cc, giving you a noticeable boost in horsepower and torque. It's a popular choice for riders who want to extract more performance from their ATV, whether for trail riding or more demanding use.

The kit includes a hand-matched Vertex piston, which is a well-known name in performance engine components, along with a complete top-end gasket set and O-rings. This all-in-one approach simplifies the rebuild process and can offer cost savings compared to sourcing each part individually from the OEM. The cylinder itself is constructed from a 2618 aluminum alloy, chosen for its strength and durability, which is important when you're increasing engine displacement and the stresses that come with it. The compression ratio is set at 9.2:1, which is a solid bump over stock and contributes to the improved performance without requiring extreme fuel octane.

When undertaking a big bore project like this, it's always a good idea to ensure your fuel delivery and exhaust systems are up to the task of supporting the increased airflow and combustion. This kit is designed to look like the OEM cylinder externally, but the internal enhancements are where the performance gains come from. It's a well-built kit that offers a significant upgrade for your Raptor's engine.