YFZ450 YFZ 450 Stock Bore CP Piston Wiseco Crank Full Motor Gaskets Rebuild Kit

Yamaha YFZ450 Complete Engine Rebuild Kit Wiseco Crank CP 95mm Stock Bore Piston Cometic Gaskets

📖 Product Description

Restore the performance, reliability, and durability of your Yamaha YFZ450 with this complete engine rebuild kit featuring premium components from Wiseco, CP-Carrillo, Cometic, NTN, Koyo, and BPRATV. Designed as a true top and bottom end rebuild solution, this kit includes a forged 95mm stock bore CP-Carrillo piston, heavy-duty Wiseco assembled crankshaft, premium Japanese main bearings, complete gasket and seal kits, valve stem seals, and a heavy-duty cam timing chain.

Whether you're rebuilding a worn engine or refreshing your race quad, this direct bolt-on package delivers OEM fitment with race-proven durability while maintaining the factory 95mm stock bore configuration and compression ratio.

🔥 Key Features & Benefits

Built using industry-leading components, this complete rebuild kit provides everything required to restore your Yamaha YFZ450 engine with dependable performance and long service life.

• 95mm stock bore forged CP-Carrillo piston maintains OEM displacement and compression.
• Wiseco heavy-duty assembled crankshaft delivers exceptional strength and reliability.
• Premium NTN or Koyo Japanese main bearings for long-lasting bottom end performance.
• Complete Cometic top end gasket kit for superior sealing.
• Complete bottom end gasket and engine seal kits included.
• BPRATV Talon heavy-duty cam timing chain replaces worn OEM chains.
• Direct bolt-on components requiring no machining when used with a serviceable stock cylinder.
• Backed by a 1-year manufacturer warranty.

📦 Product Contents

• CP-Carrillo 95mm stock bore forged piston
• CP-Carrillo piston ring set
• CP-Carrillo piston circlips
• Wiseco heavy-duty complete assembled crankshaft with connecting rod
• Wiseco heavy-duty main bearings (Koyo or NTN – Made in Japan)
• Cometic complete top end gasket kit
• Viton valve stem seals
• Wiseco complete bottom end gasket kit (manufactured by Cometic or Athena)
• Wiseco complete bottom end engine seal kit (manufactured by Cometic or Athena)
• BPRATV Talon heavy-duty OEM replacement cam timing chain

✅ Compatibility

Designed specifically for carbureted Yamaha YFZ450 ATV models using the factory 95mm stock bore engine configuration.

• Yamaha YFZ450 (2004)
• Yamaha YFZ450 (2005)
• Yamaha YFZ450 (2006-2009)
• Yamaha YFZ450 (2012-2013)

❓ FAQ

• Q: Does this kit require machine work?

  A: No. This stock bore rebuild kit is designed for direct installation when used with a serviceable OEM cylinder.

• Q: Is the Wiseco crankshaft fully assembled?

  A: Yes. The crankshaft arrives completely assembled with connecting rod installed and ready for installation.

• Q: Are all gaskets and engine seals included?

  A: Yes. Complete top end gaskets, bottom end gaskets, engine seals, and valve stem seals are included.

• Q: What warranty is included?

  A: This rebuild kit includes a 1-year manufacturer warranty against material or workmanship defects.

🌟 Why Buy from BPRATV

At BPRATV, our promise is unwavering: The Best Parts. The Best Performance. The Best Price. We specialize in high-performance powersports components trusted by riders and builders who demand reliability and results. Every part is carefully selected for precision, durability, and real-world performance. Trust BPRATV to keep your Yamaha YFZ450 running at its best, every single time. 

Rebuild your Yamaha YFZ450 with confidence--order your complete BPRATV engine rebuild kit today! 

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

© BPRATV LLC

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. This product is sold only for use in connection with EPA-certified, purpose-built, nonroad vehicles used solely for closed-course, nonroad competition/racing.