Unlock the hidden power of your YZ250 with this complete 72mm big bore top end kit – the easy bolt-on solution for transforming your bike into a high-performance racing machine.

/ Magnum Big Bore Top End Cylinder Kit

Big BoreCylinder, Big Bore Cylinder Head, Big Bore Power Valve,Piston, Gaskets

• Magnum MX 72mm 293cc Big Bore Cylinder Kit with a Nikasil Plated Cylinder – Designed by Eric Gorr
• Larger Water Jackets for Increased Cooling!
• Forged Moly Coated 72mm Big Bore Piston Kit (Includes, Piston, Pin, Rings & Clips) (Perfect For Pump Gas)
• Big Bore Cylinder Head with Big Bore Power Valve Kit
• Complete Top End Gasket Set
• 1-year warranty on cylinder for peace of mind

This bolt-on big bore kit is perfect for motocross racers and performance enthusiasts who want to unlock their YZ250’s full potential. The significant increase in power will allow you to blast out of corners, clear jumps with ease, and motor past competitors on straightaways. Plus, the kit requires no case modifications, so installation is a breeze. Whether you’re a casual trail rider or an aspiring pro racer, this complete 72mm top end kit will take your YZ250’s performance to the next level.

– The Best Parts. The Best Performance. The Best Price.BRAPPPPPPPPPP!
5CU-11631-00-A0, 5CU-11631-00-B0, 5CU-11631-00-C0, 5CU-11631-00-D0, 5CU-11603-10-00, 5CU-11603-00-00, 5CU-11633-10-00, 5CU-11633-00-00, 93450-19052-00, 5CU-11311-02-00, 5CU-11311-00-00, 5CU-11351-10-00, 5CU-11351-00-00, 93211-02703-00, 93210-74316-00, 93210-15639-00