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 ship next business day. ModQuad parts dispatch Monday through Thursday.
Made-to-order and custom powder coat items show their lead time at the top of this page, right next to the truck icon. These are built fresh for you, so timing varies by brand and current backlog.
Need something by a specific date? Call us at 541-668-7503 before ordering and we will check stock and ETA on that exact part. We can often point you to an in-stock alternative from another distributor.
Questions? Contact us, we respond within 24 hours.
