20003, 20003-K01, M1000, 4865M09500, C7908, 71014-5, CR8EIX, 20003, M1006, C7908, 71014-5, 2S2-11181-00-00, 3VD-14613-01-00, 2S2-11181-00-00, 5TG-11631-12-00, 5TG-11633-10-00, 5TG-11631-21-00, 2S2-11181-00-00, 93450-22027-00, 2S2-11181-00-00, 2S2-11351-00-00, 4FM-12213-00-00, 94591-57120-00, 2S2-11311-30-00, 4FM-12213-00, 2S2-11311-30-00

YFZ450R YFZ450X FI 95mm Stock Bore Cylinder Works CP-Carrillo 12.5:1 Rebuild Kit

Unleash Amazing Power: Upgrade Your Fuel Injected YFZ450 to Industry-Leading Performance!

Ready to add amazing & reliable power to your Yamaha YFZ450R or YFZ450X Fuel Injected model? This Brand New Complete Top End Rebuild Kit is designed to bring your ATV’s engine back to its prime with industry-leading performance! Featuring a 95mm Stock / Standard Bore Nikasil Plated Cylinder from Cylinder Works and a high-performance CP Carrillo 12.5:1 Forged Piston Kit, this package combines the best components in the industry. Experience crisp throttle response, explosive power delivery, and unmatched reliability. This kit provides everything you need for a comprehensive top-end overhaul, guaranteeing a revitalized riding experience!

Premium Components: Nikasil Cylinder, CP-Carrillo 12.5:1 Forged Piston & Cometic MLS!

This top-tier Motor Rebuild Kit is packed with high-quality components for maximum durability and peak performance, ensuring your engine’s longevity. It includes a Cylinder Works 95mm Stock / Standard Bore Nikasil Plated Cylinder, designed for optimal compression and cooling, backed by a robust 1 Year Warranty. Powering your engine is a precision CP Carrillo 12.5:1 Pump Gas Forged Piston Kit. These pistons are meticulously crafted from Forged Aluminum for superior strength and lightweight design, CNC Machined for exceptional precision, and undergo Rigorous Testing for unwavering reliability. The kit includes Nitrite-Coated High-Temp Piston Rings, Chrome Wrist Pin, and Circlips. For a flawless, leak-free seal, a premium Cometic Top End Gasket Kit with MLS Head Gasket is provided. This kit is proudly MADE IN USA. All parts come with a 1 year warranty for your peace of mind, providing you with a fresh start for your YFZ450’s engine!

• Cylinder Works 95mm Stock / Standard Bore Nikasil Plated Cylinder (1 Year Warranty).
• CP Carrillo 12.5:1 Pump Gas Forged Piston Kit (Includes Piston, Rings, Pin & Clips).
• Cometic Top End Gasket Kit with MLS Head Gasket.
• Pistons are Forged Aluminum, CNC Machined, and Rigorously Tested.
• Adds Amazing & Reliable Power with industry-best components.
• Proudly MADE IN USA.

Perfect Fit & Seamless Installation: Fits Fuel Injected YFZ450R & YFZ450X Models!

This Complete Top End Rebuild Kit is designed for a direct and hassle-free engine overhaul on your Yamaha YFZ450R and YFZ450X Fuel Injected models. It specifically fits:

• YFZ 450 R (09-25)
• YFZ 450 R SE (09-25)
• YFZ 450 X (10-11)
• YFZ 450 X Bill Balance Edition (10)

This kit is a bolt-on solution with no machining required, ensuring a straightforward installation. It directly replaces Yamaha OEM Part #s: 3B4-11311-00-00 (Cylinder), 3B4-11631-00-00 (Piston – stock comp), 3B4-11631-00-A0 (Piston – higher comp), and 3B4-11181-00-00 (Head Gasket). Invest in this ultimate rebuild kit to restore factory-level precision, enhance durability, and enjoy the powerful performance your YFZ450R/X was designed for!

Frequently Asked Questions (FAQ)

• Q: What makes this a complete top end rebuild kit for the YFZ450 FI models?

  A: This kit is comprehensive, covering all essential components for a top-end overhaul. It includes a Cylinder Works 95mm Stock/Standard Bore Nikasil Plated Cylinder, a CP Carrillo 12.5:1 Pump Gas Forged Piston Kit (with piston, rings, pin, & clips), and a Cometic Top End Gasket Kit with MLS Head Gasket.

• Q: What are the benefits of the Cylinder Works Nikasil cylinder and CP-Carrillo forged piston?

  A: The Cylinder Works Nikasil cylinder offers superior durability, wear resistance, and heat dissipation. The CP-Carrillo 12.5:1 Forged Piston is meticulously crafted from forged aluminum, CNC machined, and rigorously tested, ensuring exceptional strength, precision, and a high compression ratio suitable for pump gas.

• Q: What models and years of YFZ450 are compatible with this kit, and does it fit carburetor models?

  A: This kit is specifically compatible with Yamaha YFZ450R and YFZ450X Fuel Injected Models. It fits YFZ450R (2009-2025), YFZ450R SE (2009-2025), YFZ450X (2010-2011), and YFZ450X Bill Balance Edition (2010). It does **NOT** fit carburetor models.

• Q: Is machining required for installation, and what type of fuel is recommended for the piston?

  A: No machining is required for installation. This is a direct bolt-on kit with a 95mm stock/standard bore Nikasil cylinder that is ready for direct fit. The CP Carrillo 12.5:1 piston is specifically designed for pump gas, making it a powerful yet convenient option for your fueling needs.

Why Buy from ? Your Go-To for Yamaha YFZ450 Performance Parts!

At , our promise is unwavering: The Best Parts. The Best Performance. The Best Price. This Yamaha YFZ450R Top End Rebuild Kit exemplifies our dedication to providing high-quality, essential components that guarantee your machine’s longevity and peak performance. We share your passion for riding and are committed to ensuring your YFZ450R runs flawlessly, whether you’re racing or hitting the trails. Trust to deliver the parts you need to keep your YFZ450R performing its best, every single time.

Upgrade your YFZ450R today & unleash amazing power!

– The Best Parts. The Best Performance. The Best Price.

LLC

20003, 20003-K01, M1000, 4865M09500, C7908, 71014-5, CR8EIX, 20003, M1006, C7908, 71014-5, 2S2-11181-00-00, 3VD-14613-01-00, 2S2-11181-00-00, 5TG-11631-12-00, 5TG-11633-10-00, 5TG-11631-21-00, 2S2-11181-00-00, 93450-22027-00, 2S2-11181-00-00, 2S2-11351-00-00, 4FM-12213-00-00, 94591-57120-00, 2S2-11311-30-00, 4FM-12213-00, 2S2-11311-30-00