Cylinder Works Big Bore Cylinder Kit 99mm 13.5:1 – Honda CRF450R/CRF450RX 2021–2024
- Ships next business day
- 30-day hassle-free returns
- Call us: 541-668-7503
- Secure checkout — Pay in 4 available
✓ Fits:
- 2021-2024 Honda CRF450R
- 2021-2024 Honda CRF450RX
✓ Features:
- (1) Nickel silicon carbide plated cylinder (99.00mm / +3.0mm bore)
- (1) Top end gasket kit (excludes valve stem seals)
- Backed by Cylinder Works manufacturer warranty
- Not legal for use in California (no race waiver available)
- For closed-course competition use only
- Big Bore (+3.0mm) design for increased displacement and power gains
- Cylinder looks and installs like stock — no machining required
✓ What's Included:
- (1) Vertex piston kit (high compression 13.5:1 piston, rings, pin, and clips)
- High compression 13.5:1 Vertex piston kit for maximum performance
Ships fast from DuneGoonShop!
📦 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
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.
