80-80872,80-80876,80-80872T,80-80876T,1SL-12111-00-00,1SL-12121-00-00,51Y-12119-00-00
Is your Yamaha YZ450F, YZ450FX, or WR450F feeling sluggish? Worn valves can lead to compression loss, poor starting, and diminished power. This Complete Set of Kibblewhite Black Diamond Performance Valves (All 4) is your ultimate solution to breathe new life into your engine! Recognized as "The Best On The Market," these valves are meticulously engineered for superior performance and longevity, far surpassing standard OEM quality. Don't let worn components hold you back; upgrade to Kibblewhite today and experience immediate improvements in power delivery, throttle response, and overall engine reliability. Get ready to dominate the track or trail with a revitalized, high-performing engine!
Step up your engine's internal game with Kibblewhite Black Diamond Stainless Steel Valves, the pinnacle of valve technology! Each one-piece valve undergoes a special German impregnation process, creating a hardened surface that dramatically improves wear properties, reduces friction, and offers superior resistance to corrosion compared to traditional chrome or nickel plating. Designed using Finite Element Analysis software and tested on computerized flow benches, these lightweight, strong valves provide excellent flow characteristics for maximum performance. This kit also includes Genuine Kibblewhite RED Valve Seals (not generic blue ones) for superior high-temperature sealing, ensuring your engine retains optimal oil control and power. Made in the USA, this set offers better-than-OEM performance for a fraction of the cost!
This Kibblewhite Performance Valve Kit is designed for precise, direct OEM replacement in a range of top Yamaha models. It fits Yamaha YZ450F (2014-2019), Yamaha YZ450FX (2016-2020), and Yamaha WR450F (2016-2021). This kit includes Kibblewhite Part# 80-80872 (Intake) and 80-80876 (Exhaust), and directly replaces Yamaha OEM Part# 1SL-12111-00-00, 1SL-12121-00-00, 51Y-12119-00-00. Investing in these superior valves now helps you avoid expensive repairs down the road by maintaining optimal engine health. Take note: For optimal performance and durability, you Must use Kibblewhite Lightweight Valve Spring Kits when installing Black Diamond™ Valves.
A: Kibblewhite Black Diamond Valves feature a special surface impregnation process that significantly improves wear resistance, reduces friction, and provides superior corrosion resistance. They are lightweight, strong, one-piece forgings designed for excellent flow, offering better-than-OEM performance and durability.
A: Yes, this complete set includes genuine Kibblewhite RED valve seals. These seals are specifically designed for superior high-temperature sealing, ensuring optimal oil control and engine performance.
A: Yes, for optimal performance and durability, it is crucial to use Kibblewhite Lightweight Valve Spring Kits when installing Black Diamond™ Valves.
At BPRATV, our promise is unwavering: The Best Parts. The Best Performance. The Best Price. This Kibblewhite Black Diamond Valve 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 Yamaha runs flawlessly, whether you're racing or tackling tough trails. Trust BPRATV to deliver the parts you need to keep your Yamaha performing its best, every single time.
Upgrade your Yamaha's engine today & feel the ultimate power! 🏁
BPRATV - The Best Parts. The Best Performance. The Best Price.
BRAPPPPPPPPPP!
© BPRATV LLC
80-80872,80-80876,80-80872T,80-80876T,1SL-12111-00-00,1SL-12121-00-00,51Y-12119-00-00
























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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.
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