Yamaha WR 400 F Intake Camshaft - Hot Cams - Stage 1 - `98-`00. This Stage 1 intake cam is a direct-fit performance upgrade for WR400F models from 1998–2000, engineered to improve mid-range response without requiring extensive modification.

Designed and dyno-proven in the USA, this Hot Cams Stage 1 intake cam uses advanced valvetrain software during development to deliver measured gains and reliable operation. CNC-machined from 8620 billet, case-hardened steel, the lobe profiles and dimensions are produced for consistent fit and long service life. Expect an easy installation on stock engines and a realistic 5–10% power gain at a cost-effective price point. While this listing is for Stage 1, Hot Cams offers Stage 2 and Stage 3 options for different performance goals.

Features

• Dyno-proven development in the USA
• 5–10% power gain on typical installations
• CNC-machined from 8620 billet, case-hardened steel
• Engineered with valvetrain software for precise lobe profiles
• Stage 1 fit for improved mid-range response; other stages available
• No core exchange required

If you have questions or need help choosing the right cam for your build, call us directly — we’re happy to advise. We offer installation and customization services at our two locations in Austin, Texas and the Los Angeles, California area. Call: 512-982-9393 (TX) or 562-981-6800 (CA). If you’re considering multiple items, contact us for shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov