Honda CRF450R (2007–2008) Black Diamond™ Cylinder Head Service Kit – Kibblewhite 30-33350
Honda CRF450R 2007–2008 Black Diamond™ Valve Kit w/ C674 Guides & Ti Springs – Kibblewhite Description Race-ready top-end overhaul — the Kibblewhite 30-33350 Black Diamond™ Cylinder Head Service Kit is a complete high-performance package for 2007–2008 Honda CRF450R. Black Diamond™ one-piece forged valves, C674 manganese bronze guides, CrSi dual springs, titanium retainers, Viton seals, and full top-end gasket kit — drop-in reliability for MX, supercross, or vintage racing.
What’s Included
- 2x Intake Black Diamond™ Valves (standard)
- 2x Exhaust Black Diamond™ Valves (standard)
- 2x Intake C674 Manganese Bronze Guides
- 2x Exhaust C674 Manganese Bronze Guides
- 2x Intake Titanium Retainers
- 2x Exhaust Titanium Retainers
- 2x Intake CrSi Dual Valve Springs (40 lb seat / 147 lb @ 0.440" lift)
- 2x Exhaust CrSi Dual Valve Springs (70 lb seat / 203 lb @ 0.440" lift)
- 2x H.T. Steel Basewashers (intake & exhaust)
- Viton Valve Stem Seals
- Complete Top-End Gasket Kit (head, base, exhaust, case gaskets, O-rings, washers)
Key Features
- Black Diamond™ Valves — German-impregnated forged stainless, reduced friction & wear
- C674 Bronze Guides — manganese alloy, superior heat transfer, easy reaming
- CrSi Dual Springs — high-RPM stability, progressive wound
- Titanium Retainers — lightweight, max valve control
- Viton Seals — high-temp, oil-resistant, long-life
- Full gasket kit — leak-proof sealing
Fitment
- 2007 Honda CRF450R
- 2008 Honda CRF450R
Warranty Info Backed by Kibblewhite limited warranty. Professional installation required. WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Price & SKU Retail Price: $411.82 SKU: 0926-3121 / 30-33350 Weight: 1.25 lbs Availability: In Stock
📦 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.
