Kawasaki KFX400 KFX 400 94mm 434 cc Big Bore Cylinder CP Cometic Top End Rebuild

Kawasaki KFX400 94mm 434cc Big Bore Cylinder CP Piston Cometic Top End Kit 2003-2006

📖 Product Description

Take your Kawasaki KFX400 to the next level with this 94mm 434cc Big Bore Top End Rebuild Kit. Designed for 2003-2006 KFX400 ATV models, this performance package combines a 94mm big bore cylinder, CP Carrillo 12.5:1 high compression piston kit, and Cometic top end gasket set to deliver a hard-hitting increase in displacement, compression, torque, and horsepower potential.

The larger 94mm cylinder increases displacement to approximately 434cc, giving your KFX400 stronger acceleration and more usable power for demanding trail, dune, and closed-course riding. The matched CP Carrillo forged high compression piston features a performance-oriented 12.5:1 compression ratio, while the Cometic gasket package provides the sealing components needed for a proper top end rebuild.

🔥 Key Features & Benefits

• 94mm big bore cylinder increases displacement to approximately 434cc for stronger performance
• CP Carrillo 12.5:1 high compression piston provides a performance-focused compression increase
• Forged CP piston construction engineered for demanding high-performance engine applications
• Cometic top end gasket set provides dependable sealing for the rebuilt top end
• 434cc big bore configuration provides increased displacement over the stock KFX400 engine
• Complete matched top end package eliminates the hassle of sourcing the major rebuild components separately
• Excellent performance upgrade for trail, dune, track, and closed-course competition applications
• Brand new components backed by applicable manufacturer warranty coverage

📦 Product Contents

• 1 x 94mm Big Bore Cylinder
• 1 x CP Carrillo 94mm 12.5:1 High Compression Forged Piston
• 1 x CP Carrillo piston ring set
• 1 x CP Carrillo wrist pin
• Piston pin retaining clips / circlips
• 1 x Cometic Top End Gasket Set

✅ Compatibility

Designed for the Kawasaki KFX400 ATV. This kit converts the engine to a 94mm approximately 434cc big bore configuration.

• 2003 Kawasaki KFX400
• 2004 Kawasaki KFX400
• 2005 Kawasaki KFX400
• 2006 Kawasaki KFX400

❓ Frequently Asked Questions

• Q: What displacement does this big bore kit produce?

  A: The 94mm big bore configuration increases the Kawasaki KFX400 engine displacement to approximately 434cc.

• Q: What compression ratio is the CP Carrillo piston?

  A: This kit includes a CP Carrillo 12.5:1 high compression forged piston matched to the 94mm big bore configuration.

• Q: Does this kit include the cylinder?

  A: Yes. A 94mm big bore cylinder is included along with the CP Carrillo piston assembly and Cometic top end gasket set.

• Q: Does the piston kit include rings and installation components?

  A: Yes. The CP Carrillo piston package includes the matched piston rings, wrist pin, and retaining clips required for piston assembly.

• Q: Are top end gaskets included?

  A: Yes. The kit includes a Cometic top end gasket set for proper sealing during the rebuild.

• Q: Which Kawasaki KFX400 model years does this kit fit?

  A: This big bore top end rebuild kit fits 2003, 2004, 2005, and 2006 Kawasaki KFX400 ATV models.

• Q: Is professional installation recommended?

  A: Yes. Proper engine assembly, clearances, fueling, and tuning are critical with a high-compression big bore setup. Installation by an experienced powersports engine builder is recommended.

• Q: Is there a warranty?

  A: Applicable components include a 1-year limited manufacturer warranty against qualifying material or workmanship defects, subject to the warranty terms and exclusions below.

🌟 Why Buy from BPRATV? Trusted Performance Experts 🌟

At BPRATV, our promise is unwavering: The Best Parts. The Best Performance. The Best Price. We specialize in premium ATV and motocross engine components trusted by riders and builders nationwide. Our kits combine industry leading brands when applicable to deliver reliability and performance you can trust. Trust BPRATV to keep your Kawasaki KFX400 running at its best, every single time.

Unleash 434cc big bore performance from your KFX400 with CP Carrillo and Cometic components -- upgrade your top end today!

BPRATV - The Best Parts. The Best Performance. The Best Price.

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© BPRATV LLC 1-year limited warranty from the manufacturer for material or workmanship defects.* Due to the nature of high performance and racing applications, BPRATV LLC components are sold without express warranty or any implied warranty of merchantability or fitness for a specific purpose. BPRATV LLC shall not, under any circumstances, be liable for any specific, incidental or consequential damages, including, but not limited to, damage, or loss of property or equipment, loss of profits or revenue(s), cost of purchased or replacement goods, or claims of customers of the purpose, which may arise and/or shall result from sale, installation or use of these parts. Installation of these parts may void vehicle manufacturers warranty coverage and/or may cause the vehicle to be illegal in some locations.

This product is exempt from the emission standards and related requirements of 40 C.F.R. § 1051 as provided by 40 C.F.R. § 1051.620, and California law [e.g., vehicle code§§ 27156 and 38391]. This product is sold only for use in connection with EPA -certified, purpose-built, nonroad vehicles used solely for closed course, nonroad competition/racing and not used for any recreational purpose or on public highways or right of ways maintained by and open to the public.