YFZ450 YFZ 450 Stock Bore Cylinder Piston Wiseco Crank Full Motor Rebuild Kit HD
YFZ450 YFZ 450 Stock Bore Cylinder Piston Wiseco Crank Full Motor Rebuild Kit HD
Yamaha YFZ450 Engine Rebuild Kit | Wiseco Crank Piston Stock Bore 2004-2013
Yamaha YFZ450 Stock Bore Engine Rebuild Kit – Wiseco Crank, Piston & Cylinder
Complete Bottom End & Top End Rebuild Solution
Restore factory power and long-term reliability with the BPRATV / Wiseco / Cometic Yamaha YFZ450 Engine Rebuild Kit, featuring premium components from Wiseco, Cometic, NTN, Koyo, and BPRATV. This kit is engineered for riders who demand OEM-level fitment with race-proven durability.
🔥 Key Features & Benefits
Designed for serious riders and builders, this kit includes everything needed for a full engine rebuild using direct bolt-on components—no guesswork, no shortcuts.
- Stock bore design maintains OEM compression and reliability
- Wiseco forged internals for maximum strength and longevity
- Nikasil plated cylinder for superior heat transfer and wear resistance
- Complete gasket and seal coverage for top and bottom end rebuild
- Backed by a full 1-year manufacturer warranty
📦 Complete List of Included Parts
This kit includes all critical components required to rebuild your Yamaha YFZ450 engine from the crankshaft up.
- BPRATV 95mm stock bore Nikasil plated cylinder (1-year warranty)
- Wiseco BPRATV Custom 12:1~12.5:1 compression 95mm stock bore forged piston
- Wiseco piston ring set
- Wiseco 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 models, ensuring precise fitment and reliable performance.
- Yamaha YFZ450 Carbureted Models
- Model Years: 2004
- Model Years: 2005
- Model Years: 2006–2009
- Model Years: 2012–2013
❓ Frequently Asked Questions (FAQ)
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Q: Does this kit require machine work?
A: No. This is a stock bore, direct bolt-on rebuild kit.
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Q: Is the crankshaft fully assembled?
A: Yes. The Wiseco crank comes fully assembled and ready to install.
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Q: Are all gaskets and seals included?
A: Yes. Complete top end and bottom end gasket and seal kits are included.
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Q: What warranty is included?
A: Includes a 1-year manufacturer warranty for peace of mind.
🌟 Why Buy from BPRATV? Trusted Performance Experts 🌟
At BPRATV, our promise is unwavering: The Best Parts. The Best Performance. The Best Price. Every rebuild kit is assembled with industry-leading components and real-world riding experience. Trust BPRATV to keep your Yamaha YFZ450 running at its best, every single time.
Rebuild with confidence — order your BPRATV YFZ450 engine kit today!
BPRATV - The Best Parts. The Best Performance. The Best Price.
BRAPPPPPPPPPP!
© 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 be liable for incidental or consequential damages. Installation may void manufacturer warranty and may be illegal in some locations. This product is sold for closed-course competition use only and is exempt from EPA emission standards under applicable regulations.
PROFESSIONAL INSTALLATION REQUIRED
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NOTICE REGARDING PHOTOS: Product photos used in our listings are for example only to show the high quality of our components. You will receive the correct quantity, size, and fitment of bearings, titanium fasteners, nuts, and bolts for the specific kit listed.
BEARING NOTICE: In some cases, you may receive SEALED bearings. If your application requires an OPEN bearing, the seals can easily be removed.
EMISSIONS & RACE USE ONLY: This product is exempt from emission standards and 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]. Sold ONLY for use with EPA-certified, purpose-built, nonroad vehicles used solely for closed course, nonroad competition/racing. Installation may void vehicle manufacturers' warranty and/or may be illegal in some locations.
WARRANTY & LIABILITY: © BPRATV LLC 1-year limited warranty from manufacturer for material/workmanship defects.* Due to the nature of high performance and racing, components are sold without express/implied warranty of merchantability or fitness for a specific purpose. BPRATV LLC shall not be liable for specific, incidental, or consequential damages (loss of property, equipment, profits, or revenue) resulting from sale, installation, or use of these parts. This product is NOT DIY; we strongly recommend work be done by a qualified, experienced mechanic.
RETURNS: Returns accepted within 30 days for items 100% complete, brand new, and in original packaging. Items installed or prepped (lubricated/sealed) are ineligible. For warranty consideration, parts MUST be sent back for physical inspection. No exceptions. We do not warranty based on photos, emails, or third-party assessments.
SPECIALTY WARRANTIES: Cub Cylinders: Lifetime warranty for original owner via BPRATV/Millennium Technologies inspection; covers cylinder only. Titanium Fasteners: Failure during use results in replacement only. Neither warranty covers improper tuning, installation, maintenance, or misuse.
INTERCHANGEABLE PARTS: We may substitute parts of equal quality from different manufacturers to prevent backorder delays. Prices and listings subject to change without notice.
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