Cylinder Works Big Bore Kit 99mm for Yamaha YZ450F 2020-2023
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Elevate Your Ride with the Cylinder Works Big Bore Cylinder Kit for Yamaha YZ450F, WR450F, YZ450FX (2020-2023)Upgrade your Yamaha’s performance with the Cylinder Works Big Bore Cylinder Kit (99mm, +2.0mm, 12.8:1 compression). Designed for off-road enthusiasts and racers, this kit delivers unmatched power, durability, and precision. Perfect for Yamaha YZ450F (2020-2022), WR450F (2021-2023), and YZ450FX (2021-2023), this kit is engineered for seamless installation and long-lasting performance.Key Features:
- Complete Big Bore Kit: Includes cylinder, Vertex piston kit, and top-end gaskets (valve stem seals not included).
- High-Performance Design: 99mm bore with 12.8:1 compression for maximum power output.
- Durable Construction: Nickel silicon carbide-plated cylinder ensures extended life and reduced engine noise.
- Stock-Like Appearance: Looks just like OEM for a clean, professional fit.
- No Machine Work Needed: Bolt-on installation for hassle-free upgrades.
- Reliable Performance: Matched with Vertex pistons for longevity and optimal performance.
- Replacement Parts Available: Piston, gaskets, and ring sets sold separately.
- 2023 Yamaha YZ450FX
- 2023 Yamaha WR450F
- 2022 Yamaha YZ450F, YZ450FX, WR450F
- 2021 Yamaha YZ450F, YZ450FX, WR450F
- 2020 Yamaha YZ450F
- Racing Use Only: Not legal for use on pollution-controlled vehicles in California (waiver available).
- Brand Number: CW21014K01
- Weight: 3.40 lbs
- Package Dimensions: 11.00 x 8.50 x 6.50 inches
📦 Shipping Information
In-Stock Items:
- Most parts ship next business day
- Modquad parts: Monday–Thursday dispatch
Made-to-Order Items:
- Custom swingarms & A-arms: 2–4 weeks
- EVP exhaust systems: 2–4 weeks
- Sneakers: 1–2 weeks
Stock Guarantee: Items marked "In Stock" ship immediately. Made-to-order items are built fresh for you.
Questions? Contact us—we respond within 24 hours.
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